This circuit of starting lights for auto-race was found in an English documentation from the 80's. The LEDs must be of different colors, for greater realism.
This circuit allows to activate a relay in a biestable way using a 555. The pressure switches arm and...
What sets this circuit apart from the previous one is the use of only one push button. The circuit...
This circuit was found in the December 1984 issue of Radio Electronics magazine. The circuit has a...