| 摘要 |
An explanation is given of a circuit arrangement for generating the control potential for a field-effect transistor from the output voltage (VA) of a filter circuit (20). In order to reduce the noise component thereof, the output terminal (A) of the filter circuit (20) is connected to a capacitive voltage divider (C1, C2), the tap of which carries the control potential. It is possible to control the charge state of the voltage divider (C1, C2) for the purpose of setting a predetermined potential value at the tap (10).
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