Found in an 1868 Mullard documentation this circuit has a dynamic range of 10 Hz to 25,000 Hz. Modern equivalent transistors can be used.
Three 4011 NAND gates and two more components - a resistor and a capacitor make this oscillator very...
The integrated circuit used in this project is not common today. The circuit must be powered by a...
This circuit is from an American technical documentation from the 70s, but it can be easily...