R1 may be 10k and R2 100k. The transistor can be the BC548 and instead of the small lamp we can use a series LED with a 1k resistor. D1 is germanium and C1 is 10 nF. C2 can be 47 nF.
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...