Posted on Aug 17, 2012

This circuit is built around two chips: the MC1458 dual op amp, configured as a preamplifier, and the LM378 dual4-watt amplifier. The gain of the preamp is given by R3/R1 for one side and R4/R2 for the other side, which is about 100. That gain can be varied by increasing the ratios. The left and right channel inputs are applied to pins 2 and 6.

Click here to download the full size of the above Circuit.

The left and right outputs of U1 at pins 7 and 2 are coupled through CS/ RlO and C3/R6, respectively, to U2 to drive the two 8-0loudspeakers.

Leave Comment

characters left:

New Circuits



Popular Circuits

Shift register
Micropower Clock
Analog Voltage Camera-Image Tracker
motion detector sensor circuit
Electronic Torricelli Barometer Circuit
Digital Radar Speedometer Circuit
positive voltage regulator circuit with
Ding-Dong sound generator
7-Segment Displays
Camera external shutter circuit 555 timer
DC motor speed control circuit diagram of a song