Peak detector

Details Peak detector Peak detector

1984-05-04

1986-08-12

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307359, H03K 5153, G01R 1904

Patent

active

046058672

ABSTRACT:
A peak detector for measuring peak values of a voltage comprises a voltage comparator circuit (3), a capacitor storage element (5), and a charge and discharge circuit (8, 15) for the capacitor. A transistor (8) is connected in common base arrangement between the comparator device (3) and the capacitor with its base (9) connected to a constant voltage (E1). The reverse base-emitter diode voltage is limited by a diode (13). This reduces the value of capacitor (5) so that, with a moderate charging current from the voltage comparator device, a fast peak detector is obtained which can measure non-recurrent pulses of some volts within nanoseconds in a fairly accurate manner.

REFERENCES:
S. Hayes, "Video Detector Stores Peak for Minutes", Electronics vol. 49, No. 4, Feb. 19, 1976, pp. 112-113.

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