This circuit was originally found in a Philips documentation from 1969. It is intended for sensing golf cart battery voltage. The circuit can be adapted for other types of battery vehicles.
For the 600 kHz range coil is formed by 35 turns of 28 AWG wire on a ferrite core with a diameter...
Found in a 1970’s documentation, this circuit uses components of the time, uncommon today. |...
This 2003 circuit uses two types of sensors: by reed-switch and by infrared. If the magnetic...