This interesting digital counter with relays with complementary outputs was found in the Radio Electronics magazine of October 1961. The supply voltage is in accordance with the relays used.
Found in documentation from the 1980s, this circuit can generate signals in a range that reaches a few...
This circuit is from an American publication from 1978 and can currently be assembled with minor...
This 200 kHz oscillator was found on a 90's EDN. It consumes only 2.8 mW and has CMOS compatible...