PEAK DETECTOR WITH DIFFERENTIAL INPUT Russian patent published in 2019 - IPC G01R19/04 H03K5/1532 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment and can be used for detection (isolation) of single short pulses against background of in-phase interference and electromagnetic interference, for example, in optoelectronics or for extraction of impact pulses with vibration background. Peak detector has a pulse signal source, a differential amplifier, a non-inverting voltage follower, first and second diodes, first and second capacitors, a power busbar, a resistor and a resistive voltage divider. Increase in speed and noise immunity from in-phase interference and electromagnetic pickup is achieved due to linear operating mode of differential amplifier, in which it does not have saturated states due to connected non-linear diode circuits in feedback. Increase in efficiency is also achieved by eliminating additionally time for unlocking of the first diode due to shift arranged thereon by a second diode, a resistor and a positive power bus in the circuit of the non-inverting input of zero offset of the differential amplifier; elimination of general feedback; reduction of capacity of the first capacitor due to introduction of positive power busbar into non-inverting voltage follower through the second capacitor increasing discharge time. Expansion of functional capabilities is achieved due to implementation of function of indication of circuit breakage of pulse signal source.

EFFECT: faster operation and noise immunity against in-phase and low-frequency differential interference, broader functional capabilities.

3 cl, 7 dwg