Reduction of the effect of zero drift in limiting amplifiers
Abstract
Limiting amplifiers are used in phase detectors to insure the circuit against the amplitude instability of input voltage or current. An autocorrection circuit for reducing errors due to zero drift is described. This nonlinear closed-loop circuit with differential amplifier automatically regulates the voltage at the input of the amplifier by transforming the difference in the durations of positive and negative pulses into continuous voltage. An expression is given for the value of the phase shift of the transition moments of the voltage through zero at the output of the limiting amplifier.
- Publication:
-
Priborostroenie
- Pub Date:
- 1975
- Bibcode:
- 1975Prib...18...74D
- Keywords:
-
- Differential Amplifiers;
- Drift (Instrumentation);
- Error Correcting Devices;
- Instrument Errors;
- Autocorrelation;
- Feedback Control;
- Nonlinear Feedback;
- Phase Shift;
- Volt-Ampere Characteristics;
- Instrumentation and Photography