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US 5,109,170 AGranted
Current compensation circuit
AssigneeU.S. Philips Corporation
InventorsJohan H. Huijsing, Maarten J. Fonderie
Life of this patent
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Abstract
An electronic current compensation circuit which includes a series connections of a load (L) and a first control current source (3) and also includes a current follower (7). A second control current source (6) identical to the first control current source is connected to the input (8) and the first output (9) of the current follower. A second output of the current follower is connected to the junction (4) of the load and the first control current source to compensate for the load current (i.sub.L).
Claims30
An electronic circuit comprising:
- a series connection of a load and a first control current source coupled between first and second supply terminals for producing a first current, means connecting the load and the first control current source to a first control terminal, a second control current source for producing a second current that is substantially equal to the first current, a second control terminal connected to the second control current source and to a current follower having a current follower input for receiving a current to be followed and having first and second current follower outputs for delivering currents that are proportional to the current to be followed, the current follower input and the first current follower output being coupled to the second control terminal and the second current follower output being coupled to the first control terminal.
Dependencies are inferred from the claim text.