This circuit can be used with 5 to 15 V sources and the zener diode must be chosen according to the trip voltage of the protector. The circuit blows the fuse when the voltage exceeds the zener value.
This circuit alternates the activation of two pumps depending on the position of the float. The...
The integrated circuits suggested in this project are double equivalents of the well-known 555....
We found this amplifier with 50 MΩ input resistance in the May 1989 Radio Electronics magazine. The...