This circuit was found in a 1970s documentation. The components are from that time, and semiconductors are difficult to obtain today.
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...