Transformerless Solar controlled switch updated

314

02:49:17

Updated due to the relay I had is having about 1K ohm resistance, so I had to change the value of the resistor before the zener diode. Replace potentiometer with 500K LDR,  R 1K is a 12V relay,  Caution!  This circuit is designed to work without using a step-down transformer, be extremely careful when you work with  220V AC voltage!!!  Relay will be ON/OFF if LDR resistance is raised/drop between 60–70%. Lamp is just to indicate the relay is on or off, lamp to be controlled should be connected to the relay's switch(es) 

published 12 years ago

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