This 4 1/2 digit digital voltmeter circuit was published in the April 1993 Electronics Now magazine. The circuit uses the integrated component of the time and has 5 voltage ranges.
This directed coupled amplifier uses a transformer to drive a low impedance loudspeaker. This...
Two of the four gates of a 4011 is used in this biestable touch circuit. Do not use a power source...
This simple oscillator generates a 455 kHz signal. The circuit is from an 80's documentation and its...