We found this circuit in an old magazine. This is an assisted ignition, where the contact breaker is kept. The circuit uses transistors that are uncommon today. Equivalents can be tested.
We found this circuit in the semiconductor ON manual using couplers of the time. These components...
VU or Volume Units is a sound intensity indicator that can be installed on any stereo. The...
This circuit was originally designed for medical applications and biological experiments. The...