Circuit for detecting the current flow of a triac

Details Circuit for detecting the current flow of a triac Circuit for detecting the current flow of a triac

1986-06-25

1988-04-12

Zazworsky, John

Electrical transmission or interconnection systems

With nonswitching means responsive to external nonelectrical...

Temperature responsive

307360, 363 54, 363 57, H03K 1772, H03K 1718

Patent

active

047376716

ABSTRACT:
A circuit for detecting current flow in a triac, wherein the circuit operates with only one operating voltage with one pole of this operating voltage being connected to a current terminal of the triac and simultaneously being the voltage reference point for the triac. The triac gate voltage fluctuating around the voltage reference point is used to detect the triac current flow, the gate voltage of the triac is transformed, if necessary, into the voltage range of the operating voltage of the detector circuit, and digital information is generated as a function of the gate voltage to indicate whether a load current is flowing in the triac or not.

REFERENCES:
patent: 4158164 (1979-06-01), Nutz
patent: 4597038 (1986-06-01), Stacey

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