The purpose of this circuit is to indicate which of the two cars crosses the finish line first on a slot car lane. The circuit is from an 80's Popular Electronics.
This circuit is from 2005 documentation. It automatically starts an irrigation pump when the...
Found in an old Radio Electronics, this circuit uses common components today. The resistors of the IC...
This is a traditional oscillator configuration with the 741 found in a 1980 publication. When...