Voltage transient suppressor circuit

Details Voltage transient suppressor circuit Voltage transient suppressor circuit

1981-01-09

1983-03-22

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361 91, 361111, 307252R, H02H 320

Patent

active

043778321

ABSTRACT:
A circuit for use with telephony systems or the like for protecting these systems, which may be comprised of integrated circuits, from high transient voltages. The circuit includes a silicon controller rectifier (SCR) having the cathode and anode coupled between an input of the telephony system and earth potential. The gate of the SCR is coupled via a resistor to the cathode thereof and is also returned through a reversed-biased diode to a source of bias potential whereby negative voltage transients are shorted to earth potential such that the integrated circuits as well as the bias potential source are not damaged.

REFERENCES:
patent: 3213349 (1965-10-01), Gutzwiller
patent: 3723769 (1973-03-01), Collins
patent: 3878434 (1975-04-01), Voorhoeve
patent: 3894269 (1975-07-01), Ahrens
patent: 3997833 (1976-12-01), Boyama

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