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 from a Popular Electronics of 1994. The magazine no longer exists in its...
This flip-flop using two bipolar transistor was found in a publication of the year 1968. The...
This circuit is from an 80's component manual. However, the circuit may be of a modern equivalent...