This frequency divider by 10 uses discrete components only. Modern equivalent components can be used as the circuit is from an 80's documentation. Nearby frequencies can be used.
Found in an Electronic Design from the 90's, this circuit supplies voltages according to the...
This simple two-transistor circuit used transistors from the 60s, having been found in a...
The circuit shown, found in French documentation from the 1970s, functions as a variable...