This circuit is from the time when cars used contact breakers. This 80's version measures the dwell angle of the contact breaker for dwell adjustment using an era integrated circuit, the LM3917.
This circuit was obtained in a 1977 magazine, but it can still be easily assembled, as the...
This circuit can serve as a basis for a robot that follows a line on the ground. The circuit has...
Found in 90’s English documentation, this rising and falling siren, manually activated, drives a...