Patent ID: 11940402
Assignee: SCIOSENSE B.V.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A circuit arrangement comprising:
a first branch comprising:
a terminal for a supply potential;
a resistor of variable resistance;
a bipolar transistor connected as a diode;
a terminal for ground potential connected to the bipolar transistor; and
a current limiter;

a second branch comprising:
a resistor of fixed resistance, the resistor of fixed resistance connected to the resistor of the first branch; and
another bipolar transistor connected as a diode, the terminal for ground potential connected to the other bipolar transistor;

a control loop configured to reproduce a voltage drop at the resistor of variable resistance to a voltage drop at the resistor of fixed resistance; and
an output terminal connected to the bipolar transistor of the first branch and another output terminal connected to the other bipolar transistor of the second branch, the output terminals configured to supply a differential voltage,
wherein the current limiter comprises a current mirror having an input branch including a current source and an output branch, and
wherein the output branch is connected between the terminal for the supply potential and the resistor of variable resistance, or
wherein the output branch is connected between the bipolar transistor of the first branch and a voltage shifter.