This circuit has its frequency controlled by a 1MHz crystal. The circuit must be powered by a voltage of 5V. The capacitors must be ceramic. The generated signal is rectangular.
This circuit was obtained from an English documentation based on a 74121 TTL integrated circuit....
This circuit generates signals with opposite phases determined by C1 and adjusted by R2. The...
The presented circuit uses two old germanium transistors. We found this configuration in a...