This 3 and-a-half digit circuit was found in a Teledyne documentation from the 90s. The circuit uses a thermocouple as a sensor. The integrated circuit used is uncommon today.
We found this circuit in the semiconductor ON manual using couplers of the time. These components...
We found this car battery status monitor circuit in an American 80s manual. The circuit has its...
This micro FM transmitter uses a tunnel diode as an oscillator. I found it in an English...