This crystal oscillator generates a 20 MHz signal. Equivalent transistors such as BF494 and 2N2222 can be used. The stabilizing diodes can be 1N4148.
This interesting circuit was found on the Internet and is based on the 555. The circuit uses power...
Found in an old American documentation, this circuit uses neon lamps as a reference to obtain a...
The basis of this project is a three-position lever switch or similar. When the switch is in the...