With an ultra-low consumption, this circuit can be powered by solar cells. The circuit is from a 1991 documentation.
The Texas Instruments TIOS101 is a driver that can be connected to both high and low side sensors...
We found this circuit in the National Semiconductor Audio Handbook of 1977. The circuit produces...
When the sensor X1 is opened, the relay is energized. When waiting, the current drained is very...