This circuit is for 12 V batteries but can be used with batteries of other voltages by changing the zener diode. The trigger point is adjusted by R1. The operating system accepts equivalents.
This general-purpose transistor amplifier stage was found in the November 1993 issue of...
The integrated circuits suggested in this project are double equivalents of the well-known 555....
This shield can be controlled by positive or negative voltages of the sensor acting as a...