Zero Crossing Detector
What is Zero Crossing Detector ?
Zero crossing detector is a simplest circuit configurations of op-amp switching circuits. in to the Zero crossing detector configuration , the input signal is applied to one of the input terminals while the other input terminal is connected to ground . this circuit has no need to feedback connection.
What is the use of Protection diode in Zero Crossing Detector ?
In the zero crossing detector protection diodes are used to prevent the op-amp from the high input gain, because here we use direct input voltage, as there is no feedback connection.
What is the major disadvantage of Zero Crossing Detector ?
In some applications it can not switch quickly from one saturation voltage to other saturation voltage that’s why it’s speed is slow and in presence of noise the output can fluctuate between two saturation voltages.
Zero Crossing Detector
A voltage comparator circuit whose output changes concerning the input signal which is crossing the zero of the reference voltage level that’s why it is called a Zero Crossing Detector. These circuits are commonly known as switching circuits the output of these circuits lies between positive and negative saturation voltage levels. The most commonly used circuits are the Schmitt trigger, Astable, and Monostable Multivibrators.
Table of Content
- What is a Zero Crossing Detector?
- Types
- Inverting Zero Crossing Detector
- Non-Inverting Zero Crossing Detector
- Applications
- Advantages and Disadvantages
- Comparsion Between Comparator and Schmitt Trigger