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Compare zero crossing detector with schmitt trigger circuit.
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written 8.4 years ago by |
Zero Crossing Detector | Schmitt trigger circuit |
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It has only one reference voltage i.e zero volts. | It has two reference voltage,UTP and LTP. |
The input voltage is applied to inverting terminal and fixed voltage i.e zero volts to non-inverting terminal and vice versa. | The time varying input voltage is applied to the inverting input and the feedback voltage to the non-inverting input. |
It is open,loop system. | It is closed loop system. |
It does not exhibits hysteresis. | Schmitt trigger has hysteresis characteristics. |
It is used as level detector, phase detector. | It is used as a wave shaping circuit, level detector and pulse-height discriminator. Its main use is to convert any kind of wave intosquare wave. |
In this transition occur at only one level. | In this transition occur at two level. |