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STK435 IC-Based STEREO AMPLIFIER

Electronics For You

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November 2024

This stereo AF amplifier uses the STK435 IC, a highly popular choice due to its simplicity.

- RAJ K. GORKHALI

STK435 IC-Based STEREO AMPLIFIER

The STK435, with its 15-pin configuration, requires only a few external components, such as electrolytic and ceramic capacitors and resistors. With a 12V DC power supply, the amplifier delivers approximately 7 watts to an 8-ohm speaker, offering excellent audio quality. The author’s prototype is shown in Fig. 1.

imageCircuit and working

The circuit diagram of the STK435based stereo amplifier is shown in Fig. 2. The design includes the STK IC, resistors, and capacitors, with two audio inputs and corresponding amplified outputs for the right and left channels.

image

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