Found in an article in the August 1971 Radio Electronics magazine, this circuit supports 106 series SCRs and general-purpose transistors such as the BC.
In the figure we have a simple signal tracer circuit to be coupled to the volume control of an AM...
This circuit was found in documentation from the 90s, using components from that time. The...
This circuit, obtained from old documentation, allows the recovery of sulfated batteries. The...