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 is based entirely on TTL gates. The circuit must be powered by a voltage of 5...
This transmitter operates in the FM band emitting beeps that can be picked up on a common radio at...
This circuit was found in a 90s European documentation. The circuit already includes a powerful...