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.
The integrated circuit used is a version close to the 555 manufactured by Motorola. The circuit shown...
The circuit shown is from an American publication from 1970. It produces a tone that attracts fish...
Suggested by General Electric documentation from 1968, this circuit activates a relay after 60...