Using a dual 555 CMOS this very useful circuit on the bench was found in the July 1998 Electronics Now magazine. The circuit is battery powered.
This circuit was found in a Hands On Electronics with the suggested application an optical link for...
This circuit uses a 6-bit A / D converter from Philips, and has its output compatible with most...
We found this circuit in an early American 80's documentation. We note that the first gate of the...