This circuit was found in American documentation from the 90's. The circuit applies to any operational. The power supply can be between 5 and 15 V depending on the operational.
Found in EEE documentation, this circuit can have the duration and frequency adjusted separately....
This tachometer circuit with analog indication for cars with circuit breakers was found in Radio...
What we have is a powerful flasher that can be powered by voltages of 12 V like the one obtained from...