This circuit was found in 1980s Radio Electronics. The circuit includes the power supply. The ICL8038 circuit was very common at the time in this type of application.
June 2017 - Mouser Electronics has in stock the new AC Metallized Polypropylene Film Capacitors...
We find this circuit in an old documentation, but it can be made using modern transistors. The circuit...
This traditional signal injector configuration was obtained in a 1977 amateur radio manual. The...