Triac control circuits
Bipolar Devices (Thyristors, Triacs, GTO, GCT and BJT) : Gate and Base Drive Circuits
Article REF: D3232 V2
Triac control circuits
Bipolar Devices (Thyristors, Triacs, GTO, GCT and BJT) : Gate and Base Drive Circuits

Authors : Stéphane LEFEBVRE, Bernard MULTON, Nicolas ROUGER

Publication date: May 10, 2018 | Lire en français

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2. Triac control circuits

For notations, please refer to section 1 of the article [D3231] .

Triacs can be controlled in much the same way as thyristors, except that they are often used in low-power converters where the cost of control circuits must be very low. Pulse transformers are rarely used to control triacs. The current trend is to integrate functions to enable quasi-direct control by logic circuits, or even microcontrollers, generally without galvanic isolation.

Under these conditions, trigger currents...

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