Circuit for controlling and detecting a load current, e.g. in telecommunications satellite, has precision resistor to detect a load current and a summation amplifier with an output voltage and a faultless rate for the load current

摘要

The control circuit uses a precision resistor (RE) to detect a load current with a source of high voltage (U1) flowing through a load resistor (RL). A summation amplifier (OP1) has an output voltage (Utm) that has a faultless rate for the load current flowing through the precision resistor and, as a result, through the load resistor.