This circuit was obtained from Linear Technology documentation from the 80's. Powered by 5 V it can be used as a shield. The components are from the era.
This circuit takes advantage of the noise generated at the junction of a zener diode of any type....
This low-frequency oscillator was found in a 1963 documentation. Capacitors determine frequency. The...
This configuration with FET and Unijunction can be found elsewhere on this site. The JFET admits...