Found in an 80's Hands On Electronics, this circuit turns on a light when it gets dark and goes out when it gets dark. The circuit can be adapted to use high-brightness white LEDs.
We found this circuit in the National Semiconductor FETDatabook of 1977. The signal has an...
This circuit was found in an old Poptronics but is still current as transistors can be replaced...
I found this circuit in a July 1982 English magazine. The circuit is still viable by simply using...