| 摘要 |
The coupled switching transistors of the digital current switch are connected to a controlled current source. Load resistors of the current switch are formed as controlled resistors. The L-level produced by a reference current branch is compared with a predetermined level by means of a regulating device which includes the reference current branch and a compensator, and the controlled resistor or the controlled current source are adjusted such that the L-level is equal to the predetermined level.
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