Bull horn

Posted on Oct 8, 2012

The input audio signal is fed to pin 3 of Ul, an LM386 low-voltage amplifier, via C3 and Rl. Potentiometer Rl sets the drive or volume level. Ul, which serves as a driver stage, can be set for a gain of from 20 to 200. The output of Ul at pin 5 is fed to U2—a 377 dual two-watt amplifier connected in parallel to produce about four watts of output power—at pins 6 and 9 via C4 and C5. Frequency stability is determined by R2, R4, and CIO on one side, and the corresponding components R6, R5, and C9 on the other side.

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

The outputs of the two amplifiers (at pins 2 and 13) are capacitively coupled to SPKR1 through C6 and C7.

Leave Comment

characters left:

New Circuits



Popular Circuits

845 20W A1 class monotriode amplifier
1 Cell battery LED flasher circuits
Synchronous System
Phase Shifter With Eight Outputs Circuit
Low Level Sounder Circuit
Repair Notes of Ten-Tec Corsair 560 Digital Readout
TDA7375 Car Audio Amplifier Circuit
Silent Radio LED sign to Arduino
measuring inductance
light bulb pcr
bidirectional dc motor driver schematic
Simple Battery Charger using LM350
Evaluation Board For The Ad9834 Direct Digital Synthesizer
A Simple Keypad-Operated Switch - with enhanced security