Detector apparatus of the two-terminal type supplied with rectif

Details Detector apparatus of the two-terminal type supplied with rectif Detector apparatus of the two-terminal type supplied with rectif

1981-12-17

1983-11-15

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

H02H 308

Patent

active

044159455

ABSTRACT:
A detector apparatus of the two-terminal type supplied with rectified A.C. power (e.sub.1, e.sub.2, v.sub.1 v.sub.2, D.sub.7 -D.sub.10) the voltage of which can vary in a wide range, for controlling a series-connected load (CH), including at least one thyristor (TH.sub.1) and a Zener diode (Z.sub.3), a detector-control circuit assembly (CAP) associated with the load, the output (s) of which biases the base of a first transistor (T.sub.1), a capacitor (C.sub.5) serving as a power supply for the detector control circuit (CAP), and means for protection against overloads, which include a MOS-type transistor (T.sub.3), a second transistor (T.sub.2) connected to the grid of said MOS transistor, and a differential amplifier (A) connected in series with the base of said first transistor (T.sub.1).

REFERENCES:
patent: 4348709 (1982-09-01), Mauk et al.

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