The ZN416E integrated circuit is uncommon today. It consists of a complete radio, like the one found in a 90s Popular Electronics. The power is from a single battery.
This circuit consists of a voltage regulator for 6 V batteries with a very low voltage drop. The...
This circuit was obtained from a 1968 Philips publication. The transistors are of the time. Dual...
The purpose of this circuit is to power a small fluorescent lamp from from a 12 V battery. The circuit...