synchronized sawtooth


Posted on Feb 7, 2014

The sawtooth signal generated by this simple circuit is synchronized with the power line frequency. It is originally designed to control triac circuits but it can be used for other special applications. The supply voltage is highly flexible and can be any level between 4 volt and 36 volts. The values of R1 and R2 are highly dependent on the maximu


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

m input voltage. The best way to obtain the input signal is to connect the input to the power line through indirect means like using an stepdown transformer or a high voltage capacitor. The first opamp A1 converts the power line sinewave signal into a squarewave signal. This squarewave is further fed to the second opamp which converts it to a sawtooth formed signal. The opamp A2 functions as a conventional integrator. Its output sinks linearly since a constant current flows through R6 to its non-inverting input. This integrator is reset to its initial state periodically with the help of the input signal. The internal design of the opamp makes the integrator react to both positive and negative input signal.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Light/Dark Detector relay
    Xenon Strobe Light
    Output-limiter
    Load Cell Amp Schematic
    mini fm transmitter circuit
    rf module based remote control
    rain sensor alarm circuit
    radio remote control
    Lessons In Semiconductors
    Reference time signal generation circuit 32.768kHz
    FET relay circuit 2
    LM4561 LM4562 consisting of 170W power amplifier circuit



    Top