Circuit for controlling a triac at the voltage zero

Details Circuit for controlling a triac at the voltage zero Circuit for controlling a triac at the voltage zero

1997-10-16

1999-06-22

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Utilizing three or more electrode solid-state device

327451, 327476, H03K 1713, H03K 1772

Patent

active

059146281

ABSTRACT:
The present invention relates to a circuit for controlling a triac at the voltage zero. Two transistors of complementary types are connected in parallel between the gate and the main reference terminal of the triac. The control terminals of the transistors are interconnected and connected to the second main terminal of the triac via a resistor of high value. The gate of the triac is connected to a control potential source via a second resistor.

REFERENCES:
patent: 3723769 (1973-03-01), Collins
patent: 3855482 (1974-12-01), Wills
patent: 3883782 (1975-05-01), Beckwith
patent: 3902080 (1975-08-01), St. Clair et al.
patent: 4258276 (1981-03-01), Beling
patent: 4645982 (1987-02-01), Takayanagi

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