The load of this circuit depends on the triac and the integrated circuit used is uncommon today. The circuit is from 80s documentation. The triac must have a heat sink.
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...