120W power amplifier circuit


Posted on Mar 28, 2007

Amplifier circuit of this paper is to introduce a floating power supply, the purpose is to increase the output power, the amplifier output power with only the final stage ampli


120W power amplifier circuit
Click here to download the full size of the above Circuit.

fier supply voltage and casts about. Its principle is shown 2--116 shown. Iclt) as a pre-stage, ICla composition as the input voltage follower circuit, the purpose is to increase the input impedance, and to facilitate a variety of sources are connected. Its voltage gain of 1, is conducive to stable operation of the circuit o circuit input is suspended, the power stage, IClb inverting input voltage follower Icl group also be suspended. This circuit is equivalent to the whole big closed loop of all-trans -fed, or that the whole closed loop of l, which makes the circuit very stable and, in any case does not appear self-excited. Closed loop feedback in turn means that the whole machine high open loop gain, the open loop gain of the unit up to lOOdB above. Therefore, even if the final stage amplifier tube mismatch, it also minimal distortion oIClb noninverting terminal of the capacitor C4 is introduced to broaden the high frequency band, so that it reaches 60kHZo where ~ R6, C6, C7 op amp IClb floating power loop, vTl, VT2 and R7 ~ Rio and RPi, touch 2 group into the output stage bias circuit, f t ~ f Kui form the output pipe gate protection circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    2x20 Watt Stereo Power Amplifier
    InfraRed Remote Switch
    PWM Waveform Capture
    Stabilized-amplifier
    Low-frequency-oscillator
    DIY Digital Thermometer
    1.3 - 32 V / 5A Power Supply with Short Circuit Protection with LM338
    batteries Li-Poly battery charger with protection Schematic review
    rfid with arduino
    bluetooth based smart home
    voltage to frequency converter icl8038
    Relay Toggle Switch
    100w power amplifier using STK404 integrated circuit
    Retriggerable Status Indicator Circuit
    1 hour LM122 timer circuit



    Top