Twilight switch with relay output on the photoresistor

How to make lighting turn on after dark, and not when the light resistor is lit? Install a relay with normally closed contacts?

Twilight Switch Assembly Scheme

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Posted: Updated: 26.02.2018 1 comment
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  • Admin
    02/26/2018 at 19:14

    There are two options. The easiest is to use relays with closed contacts. The second is more complicated. It will be necessary to interchange the photoresistor and tuning resistor. But this method does not always work, because you need to select the resistance of the photoresistor, since the circuit gain may not be enough.

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