Zero Crossing Detector (ZCD): Comparator circuit using 741 op amp

Posted on Feb 6, 2014

Zero crossing detector(ZCD) is a voltage comparator that switches the output between +Vsat and Vsat (Vsat: Saturation voltage almost equal to 14V) when the input crosses zero reference voltage. Then what is a comparator In simple words comparators are basic operational amplifier circuits that compare two voltages simultaneously and switches th

Zero Crossing Detector (ZCD): Comparator circuit using 741 op amp
Click here to download the full size of the above Circuit.

e output according to the comparison. We can say zero crossing detection circuit is a comparator example. We will discuss in detail about comparator in our upcoming articles. Inverting zero cross detector circuit schematic using op amp 741 IC is shown below along with working, input output wave forms. ZCD circuit can be used to check whether the op-amp is in good condition. Zero crossing detectors can be used as frequency counters and for switching purposes in power electronics circuits. ZCD is a basic op amp circuit.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    PLL 41MHz reciever with 68HC711D3
    Zener Oscillator circuits
    PC thermometer schematic
    Interlock and connect DC DC converter scheme in parallel
    solar charger circuit diagram
    scr tester
    When page is bookmarked text here is referenced verbatim
    The signal processing circuit