This UPS circuit was published in the March 1985 issue of Radio Electronics magazine. The components used are still common, although some may be difficult to obtain.
We found this decoder in a 1966 General Electric publication. It makes use of general purpose...
Another alternate action switch that uses a NAND Schmitt Gate [4093 IC] is shown here. The...
This filter operates in the “opposite” way to the previous one (CIR8814), cutting all signals...