This 455 kHz IF calibration circuit uses a 4,096 MHz crystal. The circuit can be powered by voltages from 5 to 9 V.
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...