This circuit uses three inverters to generate a rectangular signal whose frequency depends on R1 and C1. The circuit is from a March 1996 Electronics Now.
This circuit is a handset receiver that picks up the signal emitted by a coil under the rug or...
Books and e-Books by Institute NCB 100 CIRCUITS - SHIELDS FOR ARDUINO FUN PROJECTS FOR THE...
This circuit for the logic control of the 555 in a power supply was found in the October 1989...