This circuit should only be used with incandescent lamps and the SCR should be fitted with a heat sink if the lamp is larger than 40 W. LDR is common. Remember that the circuit is half wave. The phototransistor can be of almost any type.
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This circuit should only be used with incandescent lamps and the SCR should be fitted with a heat sink if the lamp is larger than 40 W. LDR is common. Remember that the circuit is half wave. The phototransistor can be of almost any type.