WEBVTT

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Power thyristor with fine wire trigger, the rest resembles the diode (mounting ...)

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Here a double thyristor (for mixed bridge ...) 2 triggers up

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Sole of the module to be attached to a heatsink

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The thyristor is in series with the lamp to control it

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The potentiometer will make it possible to control the trigger current of the thyristor

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Trigger intensity (red ammeter on the right) increases

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Shortly after 2.4 mA: tripping

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When the thyristor conducts, the intensity in the trigger decreases and reverses

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Maintaining Ig trigger is useless. To cut, the power supply must be interrupted

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By proceeding slowly we measured almost 7 mA to trigger it

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Use the value of the 'pessimistic' datasheet to be certain that it will trigger (10 MA here)

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No reverse conduction!

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With a triac connected in 'inverse' also

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The triac is capable of triggering in all directions

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In this sense, 7 mA instead of 12 mA

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Self-holds for thyristor and triac. The triac is a double thyristor for the alternative