The configuration shown was found in an old Poptronics but can be easily assembled using a common calculator photocell. The relay is according to the supply voltage.
We find this circuit in an American publication of 1978. It is intended only for cars that have...
In fact, this dimmer can be used with currents up to 1.5 A according to the General Electric...
This 6-transistor transistor radio was manufactured in Japan in the 1960s. It is a portable...