This circuit was found in the July 1998 issue of Electronis Now magazine. It is a traditional gated version of the 4049 and has its frequency controlled by R2.
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...