The purpose of this circuit is to limit noise peaks on a radio receiver. The circuit is from an 80's documentation. The diode is commonly used and the circuit is applied to a receiver IF stage.
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...