| 摘要 |
The reference voltage source uses a reference element and a differential amplifier (V) whose voltage (Uref1) provided at the output (A) via a resistance (R3) at the reference element (D1) is switched to the non-inverting input (E+). The voltage (Uref2) which is provided directly at the output is switched to the inverting input (E-) via a resistance divider (R1,R2). Preferably, the anode of the reference element has a reference potential. The cathode of the reference element is coupled to the output of the differential amplifier via a resistance (R3). The output is coupled with the inverting input via a resistance (R1) and the inverting input is in connection with the reference potential via a resistance (R2). The voltage provided at the cathode of the reference element is switched to the non-inverting input of the differential amplifier.
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