Semiconductor switch of alternating current on optocoupler thyristor TO125-12,5. Scheme, description

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Semiconductor switch of alternating current on optocoupler thyristor TO125-12,5. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Clocks, timers, relays, load switches

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Designed for AC switching and load control from a low-voltage circuit, it has optical isolation at the input.

To increase the switched current, thyristors are mounted on a radiator.

Semiconductor switch of alternating current on optocoupler thyristor TO125-12,5

Semiconductor switch of alternating current on optocoupler thyristor TO125-12,5
Fig. 1. Schematic diagram

Semiconductor switch of alternating current on optocoupler thyristor TO125-12,5
Rice. 2. View from below.

The board is wired in such a way that if only a thyristor is needed for control, then it is possible to cut the conductors as shown in fig. 2, get two thyristor keys.

Publication: evm.wallst.ru

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