This circuit was found in volume 5 of the 1995 Encyclopedia of Electronic Circuits. The circuit is based on delayed triggering of SCRs that control a DC load.
This amplified circuit was found in a magazine for radio amateurs 73 of the 90s. The circuit uses an...
We found this circuit in a 1980s publication on espionage. The transistors support modern...
This 6-transistor receiver was manufactured in Japan in the 60s. The circuit is superheterodyne and has a 6V...