U479B
Automotive Lamp Outage Monitor, VT = 8 mV
Description
The monolithic integrated bipolar circuit, U479B, is designed as a monitor for lamp failure in automobiles. The comparator threshold is matched to the PTC characteristic of incandescent lamps. The threshold is tied to V4,6 = VS – VT whereas VT = 8 mV. If the voltage drop across shunt resistor, Rsh, ...
