This game for 4 competitors was found in a Popular Electronics from the 80's. The circuit has CMOS technology and can be powered by voltages from 6 to 12 V.
Found in National Semiconductor documentation from the 1980s, this circuit uses an operational...
This basic voltmeter circuit has an input resistance of 2 M. The instrument is 100 uA and the...
This simple alarm using only transistors was found in a 1990 publication. It can be powered by D...