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.
June 2017 - Mouser Electronics has in stock the new AC Metallized Polypropylene Film Capacitors...
This step-down converter with 10 to 60 V input produces a 5 V output with a maximum current of 5...
This light-sensing probe was found in a 90s Popular Electronics. The circuit detects light sources by...