This circuit has its frequency given by L1 and C1. The JFET can be any general-purpose type.
This project was found in a 1981 documentation. It consists of an interesting audio oscillator that...
This circuit makes two lamps (or LEDs) blink at a speed that depends on C1 and C2. Any MOSFET can...
This circuit was found in a 1970 Philips documentation. The components are from the time, and...