This circuit indicates the logical level of a CMOS circuit, extracting the power from the circuit being analyzed. The circuit is from an American magazine from the 90s.
This 3-transistor timer was found in the January 1994 issue of Electronics Now magazine. The...
This circuit makes use of a low impedance microphone. The relay is according to the supply voltage...
This decorative object was found in a Signetics documentation from the 60s. The circuit uses neon...