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.
This circuit causes an LED to flash at a frequency determined by the capacitor. The circuit has an...
This low power two-phase motor control was obtained in a 1989 publication. The circuit is for...
This circuit was found in European documentation from the 1980s. The unijunction may be 2N2646 and the...