Which operational amplifier configuration is commonly used in zero crossing detectors?
Comparator configuration without feedback is used.
A zero crossing detector compares the input against 0 V and switches its output each time the input crosses zero.
This needs an open-loop comparator configuration (no feedback), where the op-amp's very high open-loop gain drives the output to saturation for the smallest polarity change of the input.
Hence, a comparator configuration without feedback is used.
Similar Questions
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- In an operational amplifier integrator circuit, which component acts as feedback between the output and the input?
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To convert an op-amp integrator into a practical integrator (avoiding low-frequency saturation), which component is typically added in parallel with the feedback capacitor?
When analyzing a closed-loop circuit containing an ideal operational amplifier, what assumption must be applied regarding the currents entering the inverting and non-inverting input pins?
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Important Questions from Operational Amplifiers
Which one of the following options is true for an ideal Op-amp?
An instrumentation amplifier has a high
An OP-Amp is designed to amplify:
The Common Mode Rejection Ratio (CMRR) of an ideal OP-Amp is ________.
- In an operational amplifier integrator circuit, which component acts as feedback between the output and the input?
