This circuit for incandescent lamps was found in a 70s documentation. The circuit uses an SCR according to the power of the controlled lamps. The delay is a few seconds, given by capacitor C1.
This is the receiver for the previous circuit found in the November 1991 Radio Electronics...
This interesting low current circuit uses only one diode to obtain a full wave rectified signal....
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...