This basic circuit is from an old documentation. The relay must be 50 mA maximum and must have a parallel diode so that the pulses generated in the switching do not affect circuit stability. The LDR can be of any type.
![](/images/stories/cir/ CB4951e_0001.gif)
This basic circuit is from an old documentation. The relay must be 50 mA maximum and must have a parallel diode so that the pulses generated in the switching do not affect circuit stability. The LDR can be of any type.