SKEMA RANGKAIAN UPS MINI

SKEMA RANGKAIAN UPS MINI

UPS (Uninterruptible Power Supply), is used to anticipate the power off. Despite UPS
Reliable not the original, this series of little means, merakitnnya How do I ...?
Simple and easy. The cost is relatively cheaper to buy rather than the original UPS.
What about the components that are required? Many sold in electronic stores. Thus you
will be losers if they do not try merakitnya.
Output series UPS has a power of 1.5 W. Before the main series of the withdrawal there
is a series of mini adapter that has a voltage between 9V/12V with strong currents of
500mA. Voltage generated is used to operate the series and fill the battery. UPS is
designed to keep electronic devices can run even if the electricity off.
How to Work??
When the inverter is run with the AC input, and a change in DC voltage. At the output
penyearah used to fill the battery. When the power fails or the electric current
extinction occurs, flow to the dc voltage inverter, which then generate the output AC
voltage inverter (more details, see picture).
series of connected around the CD4047 IC multivibrator that operates at a frequency of
50 Hz. Multivibrator Q output of this drive MOSFETs IRF540. Outout inverter direduksi
and filtered using a MOV (Metal Oxide Vasitor). Tranformer used is 9-0-9, 1.5A. Two LED
(d6 and D7) is used as an indicator whether the main voltage or baattery that are
working.
UPS (Uninterruptible Power Supply), is used to anticipate the power off. Despite UPS
sehandal not the original, this series of little means, merakitnnya How do I ...?
Simple and easy. The cost is relatively cheaper to buy rather than the original UPS.
What about the components that are required? Many sold in electronic stores. Thus you
will be losers if they do not try merakitnya.
Output series UPS has a power of 1.5 W. Before the main series of the withdrawal there
is a series of mini adapter that has a voltage between 9V/12V with strong currents of
500mA. Voltage generated is used to operate the series and fill the battery. UPS is
designed to keep electronic devices can run even if the electricity off.
How to Work Series
When the inverter is run with the AC input, and a change in DC voltage. At the output
penyearah used to fill the battery. When the power fails or the electric current
extinction occurs, flow to the dc voltage inverter, which then generate the output AC
voltage inverter (more details, see picture).
series of connected around the CD4047 IC multivibrator that operates at a frequency of
50 Hz. Multivibrator Q output of this drive MOSFETs IRF540. Outout inverter direduksi
and filtered using a MOV (Metal Oxide Vasitor). Tranformer used is 9-0-9, 1.5A. Two LED
(d6 and D7) is used as an indicator whether the main voltage or baattery that are working.

INVERTER WITH IC 555

Series of DC-AC inverter produces AC output voltage as voltage net. IC 555 configured as a low frequency oscillator. Frequency can be changed from 50 to 60 Hz with a frequency potensio meter change R4.
This DC-to-AC inverter schematic produces an AC output at line frequency and voltage. The 555 is configured as a low-frequency oscillator, tunable over the frequency range of 50 to 60 Hz by Frequency potentiometer R4.
The 555 feeds its output (amplified by Q1 and Q2) to the input of transformer T1, a reverse-connected filament transformer with the necessary step-up turns ratio. Capacitor C4 and coil L1 filter the input to T1, assuring that it is effectively a sine wave. Adjust the value of T1 to your voltage.
The output (in watts) is up to you by selecting different components.
Input voltage is anywhere from +5V to +15Volt DC, adjust the 2700uF cap's working voltage accordingly.
Replacement types for Q1 are: TIP41B, TIP41C, NTE196, ECG196, etc. Replacement types for Q2 are: TIP42B, TIP42C, NTE197, ECG197, etc. Don't be afraid to use another type of similar specs, it's only a transistor... ;-)
Parts List:

R1 = 10K
R2 = 100K
R3 = 100 ohm
R4 = 50K potmeter, Linear
C1,C2 = 0.1uF
C3 = 0.01uF
C4 = 2700uF
Q1 = TIP41A, NPN, or equivalent
Q2 = TIP42A, PNP, or equivalent
L1 = 1uH
T1 = Filament transformer, your choice
If the whole thing is working, good. If not, relax and don't get frustrated. Do the following checks:
1. You have connected the filament transformer in REVERSE yes?
2. If not, disconnect the power and reverse. If you have, disconnect the transformer and measure the voltage after L1 and ground.
3. Just in case, GROUND for this circuit is same as negative (-).
4. Q1/Q2 are oposites, e.i. npn/pnp.
5. Is your 555 perhaps defective? Disconnect R3 from pin 3 and check pin 3 for a pulse.
6. Check your transistors to make sure they are not defective.

Error fix: Pin 7 and 2 were reversed. Original pinout was correct.
source  skema-rangkaian-elektronika.blogspot.com

Sound Effect

 Skema Sound Effect

This circuit uses a UM3561 IC to produce four different sound effects.
UM3561 IC Sound Effect Generator Circuit
                               Notes
Nothing too complicated here. The IC produces all the sound effects, the output at Pin 3
being amplified by the transistor. A 64 ohm loudspeaker can be substituted in place of
the 56 ohm resistor and 8 ohm loudspeaker. The 2 pole 4 way switch controls the sound
effects. Position 1 (as drawn) being a Police siren, position 2 is a fire engine sound,
3 is an ambulance and position 4 is a machine gun effect. The IC is manufactured by UMC
and was available from Maplin electronics code UJ45Y. At the time of writing this has
now been discontinued, but they have have limited stocks available.
UM3561 Availability
The IC sound generator UM3561 is now available in a kt from Maplin Electronics. Click
here for the link. Special thanks to Shaibul Alom for pointing this out to me.

SKEMA RANGKAIAN EQUALIZER 5 BAND
 
In this part of the investigation in a series of 5-band Equalizer circuits with a single IC BA3812 namely L, a device used in the hi-fi.IC BA 3812 This is L IC with 5-point Equalizer with all the functions integrated in one IC. To get a clear picture of the circuit is a series of pictures, click on it.
To Equalizer has advantages, namely: small distortion, a small noise, dinamic local area, and is suitable for a series of hi-fi stereo. And with a wide voltage range from 3.5 volt to 16 volt.voltage is the recommended 8 volt but according in market 9volt highest voltage and 16 volt adl.
sumber  skema-rangkaian-elektronika.blogspot.com

Protektor Speaker

This series also has advantages, namely: the case of consleting relationship with the
speaker amplifier series will be lost directly, so that the speaker's safe fire.time to
waiting or delay time is about 5 seconds, and can be changed with the change elco
condenser C2 to the value of smaller . The time needed to open the relay back when the
flow be around 0.5 seconds. Or you can try using a series of under this scheme:
R1=22Kohm C4-5=100uF 25V IC1=TL071
R2-3=390Kohm Q1=BC560C RL1=Relay 12VDc Omron G2R2
R4=470Kohm Q2-3-4=BC550C J1=3pin connector with 2.54mm step
R5=1Mohm Q5=BD139 J2=2pin connector with 2.54mm step
R6-7-8-9-10-12=10Kohm D1-2-3=1N4148 J3=2pin connector with 3.96mm step
R11=820 ohm D4=Green 5mm Led
C1-2-3=47uF 63V D5=Red 5mm Led
source  skema-rangkaian-elektronika.blogspot.com

RF Remote Control 2 Channel

RF Remote Control 2 Channel

Receiver SchemeThe receiver constituted by RF receiver bore RLP434A at 418MHz, the microcontroller
AT90S2313 and the 2 relays with can handle any electric (or electronic) accessory up to
10 Amps (the contacts of my relays are 10Amp at 250Volts).
The RLP434A is an RF receiver bore with cancellation abundance at 418MHz with ASK
modulation. There are 2 outputs from this module, the digital, with levels from 0v to
VCC (5 volts in our case) and the analog output. Analog achievement is not used. The
transmitter accelerate 4 bytes with 2400bps 4 times and the receiver RLP-434A, aggregate
them and move them to AT90S2313 to RxD pin, PD0.
Two affidavit to baddest AT90S2313 (20pins) instead of AT90S2343 (8pins) is because
a.) AT90S2313 use a accouterments UART adapted at 2400bps and the accouterments UART is
added stable, with abate code, than software UART that I use in the transmitter. If some
consecutive abstracts access at the middle-time of some added accepted added than accept
routine, for abiding we will apart this $.25 of data. The accouterments UART does not
accept this botheration because accept absorber for this (UDR register). This is what I
beggarly that the accouterments UART is "stable".
b.) with AT90S2313 we can drive up to 14 relays with approaching advancement of the
firmware, one broadcast to anniversary pin.
As antenna you can use a cable 30 - 35cm long
RF Remote Control 2 Channel Transmitter Scheme
The transmitter is constituted by AT90S2323 microcontroller and TLP434 RF transmitter
bore at 418MHz. I accept designe the transmitter for added array abridgement and safe
transmition of the data.
* The array abridgement is fabricated it by the use of powerdown approach of AVR. In
this case the AVR goes to beddy-bye with beneath than 1uA (microampere) accepted and
delay for alien arrest on pin PB1 to alive from beddy-bye and abide operating.
If you columnist the S2 key, the argumentation of this pin goes to '0' (0V) and AVR
alive frome the beddy-bye approach (because PB1 is INT0) and analysis if apprenticed the
S1 key. If not, the AVR booty as apprenticed key the S2. If yes the AVR booty as
apprenticed key the S1.
If you columnist the S1 key the argumentation of this pin and PB1 (through 1N4148) goes
to '0' (0V). In this case the AVR booty as apprenticed key the S1.
After, account the checksum and address 4 times the aforementioned 4 byte arrangement to
accomplish abiding that receiver takes the abstracts and goes to beddy-bye approach
until abutting arrest on PB1.
When the INT0 pin (PB1) of AVR goes to 0V, the transmitter TLP434A is working. If you
stop columnist the about-face S1 or S2, the TLP is stop working.
* The safe transmition of the abstracts based to transmition of 4 bytes with consecutive
anatomy at 2400 bps (bits per seconds). 1st and 2nd byte are for acceptance of accurate
alien ascendancy from receiver (like ID bytes), 3rd byte is command byte. The relays
cachet dependet by the amount of this byte. Finaly, the 4th byte is the checksum of the
beforehand 3 bytes.
example: if byte1=30h, byte2=35h and byte3=02h the 4th byte (chechsum) will be (byte1)
XOR (byte2) XOR (byte3) = 30h XOR 35h XOR 03h = 06h.
This adjustment use 4 bytes x 8 bit anniversary = 32 bit breadth (without alpha and stop
bits). That is beggarly 1 achievability at 4.294.967.295 to accept the receiver, the
aforementioned 4 bytes from some added RF device.
This transmitter will assignment with all 2323 chips but bigger is AT90LS2323 with alive
voltage 2.7 - 6 volts.The microcontroller that I use is AT90S2323 with alive voltage 4 -
6 volts. Its formed accomplished with 3v lithium battery.
As antenna you can use ~7cm cable in to transmitter`s box.
source  skema-rangkaian-elektronika.blogspot.com

Rangkaian Wireless Microphone

Komponen Rangkaian Wireless Microphone

R1 = 10K (brown-black-orange)
R2,R3 = 100K (brown-black-yellow)
R4 = 470 ohm (yellow-violet-brown)
C1,C3 = 4.7pF (4p7), ceramic
C2,C4 = 4.7uF-16V, electrolytic
C5 = 0.001uF (1nF), ceramic
C6 = 470pF, ceramic
Q1,Q2 = 2N2222, NPN transistor
L1 = 1uH, variable inductor
Mic = Electret mike, 2 wires
Couple Notes:
Q1 amplifies the input signal via C4 from the electret microphone.
Q2 acts as an oscillator and the signal coming off C2 is fed onto the base of Q2.
L1/C1 is a so called ‘tank’ circuit and operates in the 88-105MHz band on your regular
AM/FM radio dial.
L1 is a 1uH variable inductor coil to be able to tune it a little bit, and the range of
1uH is approximate.
The antenna can be as simple as a 8″ (21cm) piece of wire of any kind.
source  skema-rangkaian-elektronika.blogspot.com

Skema Rangkaian Penerima TV

Skema Rangkaian Penerima TV

A VHF band TV transmitter using negative sound modulation and PAL video modulation. This
is suitable for countries using TV systems B and G.
Notes:
The frequency of the transmitter lies within VHF and VLF range on the TV channel,
however this circuit has not been tested at UHF frequencies. The modulated sound signal
contains 5.5 -6MHz by tuning C5. Sound modulation is FM and is compatible with UK System
I sound. The transmitter however is working at VHF frequencies between 54 and 216MHz and
therefore compatible only with countries using Pal System B and Pal System G.
source  skema-rangkaian-elektronika.blogspot.com

Software Pembaca Nilai Resistor

Seperti yang sudah dibahas dalam posting tentang resistor sebelumnya di artikel Cara membaca nilai resistor, kemampuan membaca resistor wajib diketahui oleh rekan rekan teknisi, terlebih itu teknisi repair / service, boleh dikatakan semua perangkat elektronika dari radio usang sampai komputer semuanya menggunakan komponen dasar resistor.
Untuk yang sudah terbiasa dengan dunia teknik elektronika tentunya membaca nilai sebuah resistor itu sama sekali bukan masalah. Pada intinya kita hanya perlu mengetahui angka2 standar yang dimiliki oleh resistor, misalnya 1,1.0,2,2.2 dst..dan nilai dari warna cincin terakhir sebagai faktor pengali, bagi yang sudah terbiasa dilihat sekilas pun sudah ketahuan resistansinya.
Tetapi bagi yang masih awam dengan resistor ini tentunya kesulitan membaca hambatan sebuah resistor, perlu waktu belajar. Kebetulan saat ini sudah ada sofware untuk membaca nilai sebuah resistor secara cepat, ini juga bisa digunakan oleh anda yang ingin praktis langsung mengetahui resistansi resistor. Sebenarnya dari dulu software ini sudah ada, hanya saja fiturnya belum lengkap, resistor yang bisa dibaca hanya yang memiliki 4 cincin saja.
Sedangkan untuk software versi terbaru yaitu Resistor Color Coder v2.1 sudah bisa membaca nilai resistor dengan 5 cincin warna. Dilengkapi juga dengan Pembacaan Resistor SMD, yang resistansinya menggunakan sistem angka. Misalnya 473 berarti 47Kohm atau 272 yang berarti 2,7Kohm. Fitur tambahan lainnya yaitu sejenis panduan untuk berapa saja angka angka resistor standar itu, saya pernah membahas nya dulu di Variasi nilai hambatan pada Resistor.
Untuk lebih jelasnya silahkan lihat screenshot Software Pembaca Nilai Resistor dibawah ini :

Untuk membaca nilai resistor sebelumnya anda harus memilih terlebih dahulu jenis resistor tersebut, bisa metal film / resistor dengan 1% atau resistor standar yang memiliki toleransi 5% opsi ini terlihat di sebelah kanan software yang ditandai dengan gambar resistor. Untuk selanjutnya tinggal klik klik warna yang bersangkutan dan nilai resistor pun akan tampil dengan sendirinya.


Ini merupakan tampilan untuk membaca resistansi resistor jenis SMD yang biasa digunakan pada resistor, tinggal masukkan saja angka yang tertera pada badan resistor dan nilai dari resistor akan tampil, mudah bukan….

Tampilan yang terakhir ini merupakan fitur baru juga, fungsinya untuk mengetahui berapa saja nilai standar pada resistor itu, seperti bisa dilihat pada screenshot diatas angka angkanya yaitu 1 – 3.3 – 3.6 dst….
Jika anda ingin mendownload software ini bisa langsung ke http://www.schematica.com/ dan pilihlah download sofware resistor.
referensi : http://www.infoservicetv.com

Rangkaian Tone Kontrol

Mono Tone Kontrol

Tone kontrol mono atau tunggal adalah tone kontrol yang hanya mempunyai satu input sinyal dan satu output sinyal suara.

Stereo Tone Kontrol

Sebenarnya stereo tone kontrol adalah gabunga dari dua buah mono tone kontrol.

Amplifier Sanken

This is a  power amplifier blazer circuit provides up to 1000Watt . This interesting routes many good bass and treble alive. Importantly should choose Power supply source, which has been fairly high voltage class 70Vdc GND -70V 10A is the current low level
The transistors 2SC3858 and 2SA1494 are feature high bandwidth, excellent safe operating area, high linearity and high gain. Driver transistors are 2SC5200 and 2SA1943. All devices are rated at 230V, with the power transistors having a 150W dissipation and the drivers are 50W.
1000 watt Blazer Amplifier Circuit
This circuit describes an amplifier, power supply and tests procedures that are all inherently dangerous. Nothing described in this article should even be considered unless you are fully experienced, know exactly what you are doing, and are willing to take full 100% responsibility for what you do. There are aspects of the design that may require analysis, fault-finding and/or modification.
source skema-amplifier.blogspot.com

Stereo Amplifier Class A

 20 Watt Class A Amplifier

he amplifier circuit uses the basic circuitry of the 70W power amplifier, but modified
for true Class-A operation - it should be pretty nice! This amp has been built by
several readers, and the reports I have received have been very positive.
With simulations, everything appears to be as expected, but although I have yet to
actually build it and test it out thoroughly, no-one has had any problems so far. Using +/-20 Volt supplies - either conventional, regulated or using a capacitance multiplier, it should actually be capable of about 22 W before clipping, but expect to use a big
heatsink - this amp will run hot.l.)Rangkaian 20 Watt Class-A Power Amplifier
The current sink shown should have very high linearity, since it is based on the same
concept as the output stage devices. The 0.25 Ohm resistor should cause little grief (4
x 1 Ohm 1W resistors in parallel), but some experimentation may be needed here, since
the base-emitter voltage of the BC549 determines the current. This circuit works by
using the BC549 to steal any excess base current from the compound pair. As soon as the
voltage across the 0.25 Ohm resistor exceeds 0.65V, the transistor turns on and achieves
balance virtually instantly.The 1k trimpot in the collector of the first LTP transistor allows the DC offset to be
adjusted. The nominal value is around 400 ohms, but making it variable allows you to set
the output DC offset to within a few mV of zero.


 1000 Watt Power Amplifier

his is a scheme set 1000watt power amplifier. Currently I do not have a picture to the circuit board, but because the amplifier circuit is quite simple, you can design it
yourself PCB easily. Or you can order it at the store PCB audio kit in the center of electronic singosaren oriental, solo.the assemble cables for DC power supply and output transistors must be large, use size
1.5-3mm for large current passed. The supply used transformer with 20A/45Ct and at least
4x10000uf/80 volt capasitor. this circuit is able to supply power 10000watt therefore
the power transistor will be very hot, give good cooling fan on the power transisitor
Transitor alternative to replacement of the 2SA1494 is 2SA1216 From SANKEN. The
transistor has a 200-350 watt power dissipation of each pair so that for long-term
operation of more durable. Keep in mind, usually sold a pair of power transistors with
its complement, so you can not buy 2SC2922 alone without 2SA1216 or 2SA1494 without
2SC3858. The price range for transitor tsb is 30-40 thousand Rupiah / pair.

sumber skema-amplifier.blogspot.com

Stereo Amplifier TDA

120 Watt Stereo Amplifier
 
Here is a 120 watt stereo amplifier circuit using STK4241V. The MAX9710 a stereo audio power amplifier IC capable of delivering 2 x 120 Watts of out put to 8 Ohm loads. MAX9710 can be operated from a single ±32V to ±54V power supply.
120 Watt Stereo Amplifier Circuit Using IC STK4241V ,STK4241V IC
This amplifier circuit is suitable for home power audio devices. The STK4241V amplifier specifications might lead you to believe that it can use supply voltages of up to ±78V. With zero input signal (and therefore no output) it might, but I don't recommend anything greater than ±45V if 8 ohm loads are expected, although ±54V will be fine if you can provide good heatsinking.


 10 Watt Amplifier

This audio amplifier Circuit is a class-B audio power amplifier using a TDA1010. It is easy to construct and has only a few external components. The circuit is designed with short circuit and thermal protection. It can drive loads as low as 1.6 ohm and is capable of deliveringover 10 watts from a 16 V DC power supply.
Skema Rangkaian 10W Audio Amplifier TDA1010
The TDA1010 is a monolithic integrated class-B audio amplifier circuit in a 9-lead single in-line (SIL) plastic package. The wide supply voltage range and the flexibility of the IC make it an attractive proposition for record players and tape recorders with output powers up to 10 W.

Sumber skema-amplifier.blogspot.com

Skema Rangkaian Elektro

Jam Digital

Kedua sirkuit yang multi-range timer menawarkan jangka waktu sampai 24 jam dan seterusnya. Keduanya pada dasarnya sama. Perbedaan utama adalah bahwa ketika waktu habis, Versi 1 energi pada relay dan Versi 2 de-memberikan energi itu. Yang pertama menggunakan daya yang lebih kecil, sementara timer sedang berjalan, dan yang kedua menggunakan daya yang lebih kecil setelah timer berhenti. Pilih satu yang paling sesuai dengan aplikasi Anda.

The Cmos 4060 adalah counter biner 14 bit dengan built in osilator. Osilator ini terdiri dari dua inverter terhubung ke Pins 9, 10 & 11; dan frekuensi diatur oleh R3, R4 & berkedip C3.The Led hijau sedangkan osilator berjalan: dan IC menghitung jumlah osilasi. Meskipun sedikit 14 counter, tidak semua bit dapat diakses. Mereka yang dapat dicapai akan ditampilkan pada gambar.

Read More...

 Audio Ampifier Khusus Untuk Gitar


This is a circuit of an audio amplifier for the guitar. This circuit can reproduce a Combo amplifier of the type very common in the 'Sixties and the' Seventies of the past century. It is well suited as a guitar amplifier but it will do a good job with any kind of electronic musical instrument or microphone.
5W power output was a common feature of these widespread devices due to the general adoption of a class A single-tube output stage (see the Vox AC-4 model). Furthermore, nowadays we can do without the old-fashioned streetcars VIB-feature frequently included in those designs.Read More...

Charger Otomatis

Most battery chargers cannot be left connected to the battery for long periods of time as over-charging and consequent battery damage will occur. This add-on circuit is placed in series with the battery being charged and is powered by the battery itself. In effect, the circuit uses a high-current Mosfet to control the charging current and it turns off when the battery voltage reaches a preset threshold. Power for the circuit is fed from the battery to 3-terminal regulator REG1 which provides 8V .Read More...

Jam Digital

Kedua sirkuit yang multi-range timer menawarkan jangka waktu sampai 24 jam dan seterusnya. Keduanya pada dasarnya sama. Perbedaan utama adalah bahwa ketika waktu habis, Versi 1 energi pada relay dan Versi 2 de-memberikan energi itu. Yang pertama menggunakan daya yang lebih kecil, sementara timer sedang berjalan, dan yang kedua menggunakan daya yang lebih kecil setelah timer berhenti. Pilih satu yang paling sesuai dengan aplikasi Anda.
The Cmos 4060 adalah counter biner 14 bit dengan built in osilator. Osilator ini terdiri dari dua inverter terhubung ke Pins 9, 10 & 11; dan frekuensi diatur oleh R3, R4 & berkedip C3.The Led hijau sedangkan osilator berjalan: dan IC menghitung jumlah osilasi. Meskipun sedikit 14 counter, tidak semua bit dapat diakses. Mereka yang dapat dicapai akan ditampilkan pada gambar.

Dengan menyesuaikan frekuensi osilator, Anda dapat mengatur durasi waktu yang dibutuhkan untuk setiap output yang diberikan untuk pergi tinggi. Output ini kemudian beralih transistor, yang pada gilirannya beroperasi estafet. Pada saat yang sama, D1 berhenti hitungan dengan menonaktifkan osilator. Idealnya harus C3 non-terpolarisasi; tetapi biasa elektrolitik akan bekerja, asalkan tidak bocor terlalu buruk di arah sebaliknya. Atau, Anda dapat mensimulasikan 10uF non-terpolarisasi kapasitor dengan menghubungkan dua 22uF kapasitor kembali ke belakang (seperti yang ditunjukkan).

Menggunakan "Trial and Error" untuk menetapkan jangka waktu yang lama akan sangat membosankan. Solusi yang lebih baik adalah dengan menggunakan tabel Setup yang disediakan, dan menghitung waktu yang dibutuhkan untuk Pin 7 untuk pergi tinggi. Setup tabel pada kedua skema yang dipertukarkan. Mereka hanya dua cara yang berbeda untuk mengekspresikan persamaan yang sama.

Misalnya, jika Anda ingin jangka waktu 9 Jam, Range tabel menunjukkan bahwa Anda bisa menggunakan output pada Pin 2. Anda perlu Pin 2 untuk pergi tinggi setelah 9 x 60 x 60 = 32 400 detik. Tabel Setup memberitahu Anda untuk membagi ini dengan 512; memberikan sekitar 63 detik. Sesuaikan R4 sehingga Kuning lampu LED 63 detik setelah power diterapkan. Hal ini akan memberikan output pada Pin 2 setelah sekitar 9 jam.
Timer ini dirancang untuk persediaan 12-volt. Namun, memberikan relay yang cocok digunakan, rangkaian akan bekerja di apapun dari 5 sampai 15-volt. Menerapkan daya mulai timer. Tersebut dapat direset setiap saat dengan gangguan singkat catu daya. Tombol reset adalah opsional, tetapi TIDAK harus digunakan selama setup. Waktu yang diperlukan untuk Kuning LED untuk cahaya HARUS diukur dari kekuatan saat diterapkan. Meskipun R1, R2 dan dua LED membantu dengan setup, mereka tidak perlu dengan operasi timer. Jika Anda ingin mengurangi konsumsi daya, lepaskan mereka setelah Anda menyelesaikan setup. Jika Anda membutuhkan waktu yang lebih lama dari 24-jam, meningkatkan nilai C3.
sumber skema-amplifier.blogspot.com

Audio Amplifier Gitar

Audio Ampifier Khusus Untuk Gitar

This is a circuit of an audio amplifier for the guitar. This circuit can reproduce a Combo amplifier of the type very common in the 'Sixties and the' Seventies of the past century. It is well suited as a guitar amplifier but it will do a good job with any kind of electronic musical instrument or microphone.
5W power output was a common feature of these widespread devices due to the general adoption of a class A single-tube output stage (see the Vox AC-4 model). Furthermore, nowadays we can do without the old-fashioned streetcars VIB-feature frequently included in those designs.
Skema Rangkaian Audio Ampifier Khusus Untuk Gitar
List Component Of Gitar Ampifier

P1______________4K7 Linear Potentiometer
P2_____________10K Log. Potentiometer

R1,R2__________68K 1/4W Resistors
R3____________220K 1/4W Resistor
R4,R6,R11_______4K7 1/4W Resistors
R5_____________27K 1/4W Resistor
R7______________1K 1/4W Resistor
R8______________3K3 1/2W Resistor
R9______________2K 1/2W Trimmer Cermet
R10___________470R 1/4W Resistor
R12_____________1K5 1/4W Resistor
R13___________470K 1/4W Resistor
R14____________33K 1/4W Resistor

C1____________100pF 63V Ceramic Capacitor
C2____________100nF 63V Polyester Capacitor
C3____________470µF 35V Electrolytic Capacitor
C4____________220nF 63V Polyester Capacitor (Optional, see Notes)
C5_____________47µF 25V Electrolytic Capacitor (Optional, see Notes)
C6______________1µF 63V Polyester Capacitor
C7,C8,C9,C10___47µF 25V Electrolytic Capacitors
C11____________47pF 63V Ceramic Capacitor
C12__________1000µF 35V Electrolytic Capacitor
C13__________2200µF 35V Electrolytic Capacitor

D1_____________5mm. Red LED
D2,D3________1N4004 400V 1A Diodes

Q1,Q2________2N3819 General-purpose N-Channel FETs
Q3____________BC182 50V 200mA NPN Transistor
Q4____________BD135 45V 1.5A NPN Transistor (See Notes)
Q5____________BDX53A 60V 8A NPN Darlington Transistor
Q6____________BDX54A 60V 8A PNP Darlington Transistor

J1,J2________6.3mm. Mono Jack sockets

SW1____________1 pole 3 ways rotary switch (Optional, see Notes)
SW2____________SPST Mains switch

F1_____________1.6A Fuse with socket

T1_____________220V Primary, 48V Center-tapped Secondary
20 to 30VA Mains transformer

PL1____________Male Mains plug

SPKR___________One or more speakers wired in series or in parallel
Total resulting impedance: 8 or 4 Ohm
Minimum power handling: 20W

The present circuit can deliver 10W of output power when driving an 8 Ohm load, or about 18W @ 4 Ohm.It also features a two-FET Preamplifier, two inputs with different sensitivity, a treble-cut control and an optional switch allowing powerful overdrive or treble-enhancement.
sumber skema-amplifier.blogspot.com

Charger Otomatis

Most battery chargers cannot be left connected to the battery for long periods of time as over-charging and consequent battery damage will occur. This add-on circuit is placed in series with the battery being charged and is powered by the battery itself. In effect, the circuit uses a high-current Mosfet to control the charging current and it turns off when the battery voltage reaches a preset threshold. Power for the circuit is fed from the battery to 3-terminal regulator REG1 which provides 8V.

Rangkaian Automatic 12V Battery Charger

LED1 indicates that the battery is connected and that power is available. The 555 timer IC is configured as an astable oscillator running at approximately 100kHz. It feeds a diode pump (D1 & D2) to generate adequate gate voltage for Mosfet Q3, enabling it to turn on with very little on resistance (typically 14 milliohms). With the Mosfet turned on, current flows from the charger's positive terminal so that charging can proceed. The battery voltage is monitored by 10kO pot VR1.

When the wiper voltage exceeds the conduction voltage of zener diode ZD1, transistor Q1 turns on and pulls pin 4 (reset) low to switch off the 555 and remove gate drive to the Mosfet. This process is progressive so that the cycle rapidly repeats itself as the battery charges. Eventually, a point is reached when the battery approaches its charged condition and the cycle slows right down. Transistor Q2 and LED2 function as a cycle indicator. When the battery is under charge, LED2 appears to be constantly on. When the battery is fully charged, LED2 briefly flicks off (charging) and returns to the on state (not charging) for a longer period.

Source http://www.extremecircuits.net.

Power Supply Variable

Power supply with variable voltage and fixed current regulation made using the ubiquitous L200C regulator. The versatile 5 pin L200C regulator offers both voltage and current regulation in a single package. The IC also features thermal shutdown and input over voltage protection up to 60 Vdc. The package is also available as L200CV which has straight pins for mounting onto a PCB.

Skema Rangkaian L200 Variable Power supply

The above circuit has current limiting of 1 amp, hence Rsc = 0.45 ohm. The output voltage is variable from 2.85V to 36V. For voltages up to 36V then the input voltage, Vcc must be 40V. The supply voltage must always a few volts higher than the maximum output voltage. If you wanted to make a 9 Volt current limited PSU then the input voltage should be a minimum of 12 Volts.
L200 Pinout

L200 Chip Specifications:
DC Input Voltage: 40V max.
Peak Input Voltage: 60V max. for 10ms
Output Voltage Range: 2.85 to 36V
Output Current Range: 0.1 to 2A
Quiescent Current: 4.2mA
Output Noise: 80uV

This variable power supply circuit from www.zen22142.zen.co.uk

Volume Kontrol Stereo Digital

An array of well-matched resistors and a low noise active output stage that is capable of driving a 600 Ohm load is included in this device. Through 95.5 dB attenuation and 31.5 dB of gain , a total adjustable range of 127 dB, in 0.5 dB steps, is achieved.
Daisy-chaining of multiple Cs3310's for multi-channel audio system is provided by the simple 3-wire interface. This device has an input/output voltage range of +- 3.75 V and can be operated from +- 5V supplies. Refer to its datasheet or more information about how to use this device. [Source: Cirrus Logic]

Pengatur Volume Digital

Rangkaian Pengatur Volume Digital

Volume control is usually used Potensimeter. One drawback of the potentiometer is generated considerable noise, besides potentiometers also wear faster. To fix you can try using the following circuit. The circuit serves to replace your manual volume control in an amplifier. To adjust the volume size, you only need to press the Up or Down button. Following his schematics.Rangkaian Pengatur Volume Digital
Note:
U1 you can get at Dallas Semiconductor.
S1 to raise the volume, S2 to lower the volume.
Input signal can not be less than -0.2 V.
This circuit can be used as a volume control, tone, contrast, brightness, and dimmer control. The circuit is extremely simple and compact requiring very Few external components with power supply Can Vary from 4.5V to 8V.IC DS1669 Pinning
Pin Description IC DS1669
RH - High Terminal of Potentiometer
RW - Wiper Terminal of Potentiometer
RL - Low Terminal of Potentiometer
-V, +V - Voltage Inputs
UC - Up Contact Input
D - Digital Input
DC - Down Contact Input

Standard resistance values IC DS1669
DS1669-10 ~ 10 kΩ
DS1669-50 ~ 50 kΩ
DS1669-100 ~ 100 kΩ

sumber skema-amplifier.blogspot.com

Pre Amp Mic

variable resistor of R5 to adjust the gain of op-amplifier IC LM358.
The LM358 has two op-amp module, you may build stereo audio pre-amplifier using single LM358.

Component list of simple preamp mic circuit:
R1, R3, R4 : 10K
R2         : 1K
R5         : 100K-1M Potensiometer
C1         : 0.1uF
C2         : 4.7uF/16V
IC1        : LM358 dual op-amplifier
Mic        : Electret Microphone

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4W Audio Amplifier

 4W Audio Amplifier

Power amplifier 4 watt ini menggunakan IC type TDA1011 dari Philips semikonduktor.
The TDA1011 is a monolithic integrated audio amplifier circuit in a 9-lead single in-
line (SIL) plastic package. The device is especially designed for portable radio and
recorder applications and delivers up to 4 W in a 4 W load impedance. The device can
deliver up to 6 W into 4 W at 16 V loaded supply in mains-fed applications. The maximum
permissible supply voltage of 24 V makes this circuit very suitable for d.c. and a.c.
apparatus, while the very low applicable supply voltage of 3,6 V permits 6 V applications.

sumber skema-amplifier.blogspot.com

Panduan Servis HP

 

Charger Nokia N73

 

Keyboard N70

   

Simcard

Gambar diatas adalah sebagian contoh trik Jumper pada Handphone Nokia 1100, N70 dan N73.

sumber indonesiaindonesia.com

9 Chipset AMD Dukung Generasi Baru PC

JAKARTA - AMD juga meluncurkan HD Tablet Platform 2011, berbasis AMD Accelerated Processing Unit (APU) Z-series, yang memungkinkan tampilan media yang tajam dan
kemampuan kreasi konten untuk pasar tablet berbasis Microsoft Windows yang memiliki
pertumbuhan pesat.
Produk-produk AMD baru ini dirancang untuk memungkinkan pengalaman yang paling mendalam
untuk pasar digital dan PC tablet.
“Konsumen menghendaki peningkatan pengalaman visual yang lebih hidup, lebih menarik,
serta ada kebutuhan yang lebih besar akan kinerja tinggi, mulus, grafik hidup dan daya
komputasi yang tak tertandingi,” ujar John Taylor, product marketing director AMD,
seperti yang dilansir melalui keterangan resminya, Senin (6/6/2011).
“Dari tablet ke desktop, AMD membuat komputasi yang bertenaga dan dapat diakses oleh
semua orang,” tambahnya.
Chipset 9-series AMD menyediakan fondasi untuk membuka pengalaman paling menakjubkan
dengan desktop AMD. Chipset tersebut merupakan komponen kunci dari “Scorpius”, desktop
platform generasi selanjutnya dari AMD, yang juga akan menampilkan prosesor 8 core
“Zambezi” dan kartu grafis AMD Radeon HD6000 series untuk pengalaman HD entertainment
dan gaming yang memukau, multitasking ekstrim, tweaking, dan overclocking.
Chipset 9-series merupakan chipset pertama yang mendukung AMD AM3+ prosesor socket dan
menggabungkan kompatibilitas dengan AM3 socket sebelumnya.
Selain itu, chipset ini juga mendukung pengelolaan clock rate melalui perangkat lunak
AMD OverDrive. Selain itu, jajaran chipset 9-series memiliki hingga enam hard drive 3.0
6 Gbps SATA port antar-muka, Gigabit Ethernet, teknologi HyperTransport  3.0, dan PCI
Express® Generation 2.0 untuk pengalaman komputasi yang ekstrem di tempat kerja dan
bermain. (tyo)
sumber okezone.com