This very low current circuit was found in the April 1995 issue of Electronics Now magazine. The circuit operates at voltages from 6.5 to 10 V.
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...