Using a 4046 PLL we found this circuit in the December 1989 issue of Radio Electronics magazine. The circuit operates at 220kHz, but this frequency can be changed by changing C3.
Found in an article in the August 1971 Radio Electronics magazine, this circuit supports sensitive...
This circuit was found in a Popular Electronics of the 90s. It operates a third brake light that...
This circuit was found in ancient American documentation. The configuration can be implemented with...