We found this circuit in the January 1992 issue of Radio Electronics magazine. The circuit consists of an automatic gain control.
Figure bellow shows how the 4510, a divide-by-1U, up/down counter with three-state outputs is...
This circuit was found in an old European documentation. When R2 is cut off the circuit triggers...
This circuit, from a 1988 documentation, makes successive actuation of the shower to control the...