Using 5 V relays, this circuit can be used as a control shield for microcontrollers. The circuit uses relays, and the motor voltage is independent of the control voltage.
Indicated for automotive use in an American documentation of 1975, this circuit uses components of the...
This flip-flop with neon lamps was found in a 1969 publication that deals precisely with neon...
The frequency depends on the coil and is not found in the original documentation but should be...