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:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    12 Volt, 10 Amp Switching Power Supply
    Remote Thermometer circuit
    170 Watt audio amplifier
    Preamplifier For Magnetic Phono Cartridges
    sine to square triangle wave
    Bugging Countermeasure
    Extensible Multiple Device Programmer 1
    schematic 5 led chaser circuit using 555 chip
    1999 Buick Regal
    1980 RCA TC-2811 First Generation CCD Surveillance Camera
    ramped magnetic field circuit for a miniature mass spectrometer
    Panasonic M12H switching power supply circuit diagram



    Top