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 found in an American 80's documentation. The operational may be a modern type...
This simple rhythmic light circuit uses a 110 V to 220 V transformer and can hold a good number of...
In the figure we have the conventional configuration to use a triac to control a power load from...