Mini-stereo


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.


Mini-stereo
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

12 Volt 30 Amp PSU
Phase detector with 10-bit accuracy
Lamp-flasher
Capacitive-sensor-alarm
Audio Clipping Detector Circuit
fm radio circuit
Self-powered Fast Battery-Tester
Inductorless 3-5 Volts Converter
Circuit Power audio Amplifier with TDA2030 2.1 Chanell 3 x 18 Watts Subwoofer Complete With PCB suggestion and power supply
Sine wave schematic



Top