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 the testing of integrated circuits of type 741 (operational amplifier) such as...
This circuit is from the LM3914 manual and can be found elsewhere on this site and from other...
This circuit, which can be seen elsewhere on this website, was obtained from a 90’s English...