This 100 second timer was found in the September 1992 issue of Radio Electronics magazine. The circuit has two timing ranges and time adjustment at R6.
This circuit has a start and reset switches and can generate signals at long intervals determined by the...
We found this circuit in English documentation for PCs from 1996. The ZN448 is a very uncommon...
This circuit produces a sequence of steps controlled by P1 and applied to a 12V stepper motor with...