This very low current circuit was found in the April 1995 issue of Electronics Now magazine. The circuit operates at voltages from 6.5 to 10 V.
We found this circuit in a Popular Electronics from the 80s. It is a game of reaction speed for 3...
The integrated circuits used in this 1989 project are uncommon today, including the IF coil that...
This circuit is used to detect the water level in a reservoir. It triggers the charge when the...