This simple circuit uses a car ignition coil. The circuit appeared in the 1983 Radio Electronics Annual Edition. The circuit supports equivalent transistors.
This circuit can be used to test zener diodes up to 25 V using a standard multimeter. The voltage...
This circuit without any capacitor operates based in the time the transistor need to turn on. The...
This circuit is suitable for recovering vinyl media, having been found in an old sound magazine from...