Mini Amplifier IC LM380

Mini Amplifier IC LM380

Based amplifier IC's offer many advantages including high efficiency, high gain, low standby current, low component count, small size and, of course, low cost. It is little wonder that audio amp IC's have replaced most discrete transistors in consumer electronic devices. While many experimenters have stayed away from these little black Mysteries, I am going to uncover some of their secrets and demonstrate how easy they are to use
Rangkaian Amplifier IC LM380

Amplifier IC LM380 comes in two flavors; LM380 and LM380-8 with output powers of 700 milli-watts and 2 watts respectively. A schematic drawing below depicts the 8th and LM380-LM380.
The LM380-8 comes in an 8-pin package and its basic circuit is virtually identical to the LM380 except for the different pin out. The LM380 comes in a 14-pin package and pins 3,4,5,10,11 and 13 are connected to ground to act as a heat sink. Experience has shown the LM380 should be soldered directly to the circuit board (no IC socket) if it is going to be operated at its full rated output of 2 watts. This IC can become quite warm and it's important to get rid of excess heat through the pins. The primary advantages of the LM380 series IC's are higher output power, very low distortion and low external parts count.
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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.

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