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.
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.
