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
The Common Mode Rejection Ratio (CMRR) of an ideal OP-Amp is ________.
If the input resistor of an inverting amplifier using OP-AMP is doubled and the feedback resistor remains the same, what happens to the magnitude of voltage gain?
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?
In the circuit of an Op-Amp as an integrator, the feedback circuit mainly contains a ______.
Which of the following is an Operational amplifier?
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?
What happens to the gain of a non-inverting amplifier using OP-AMP if the feedback resistor value is increased by 5 % while keeping the input resistor constant? (Assuming the OP-AMP remains in linear range for operation.)
- In an operational amplifier integrator circuit, which component acts as feedback between the output and the input?
Important Questions from Operational Amplifiers
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 ________.
If the input resistor of an inverting amplifier using OP-AMP is doubled and the feedback resistor remains the same, what happens to the magnitude of voltage gain?
Which among the following is incorrect characteristics of an ideal opamp?
