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US 3,938,070 AGranted
Trimming potentiometer in T or Pi network connection with parallel resistance paths
AssigneeWilhelm Ruf KG
InventorsGeorg Koerner, Tibor Hargita
Life of this patent
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Abstract
A trimming potentiometer in which three parallel resistance paths are located in a plane on an insulating plate. Wiper contacts are displaceable in the same direction on the resistance paths, and are attached to a common carrier which is longitudinally displaceable by a threaded spindle. Inductance loops are arranged between the resistance paths and the respective terminals for the paths, for the purpose of matching the trimming potentiometer to its inductance and capacitive input and output values.
Claims9
A trimming potentiometer comprising, in combination, an insulating plate;
- three parallel resistance paths in a plane on said insulating plate;
- terminals connected to said resistance paths;
- wiper contacts displaceable in the same direction on said resistance paths;
- carrier means attached to said wiper contacts for mounting said contacts;
- a threaded spindle connected to said carrier means for displacing said carrier means longitudinally;
- and inductance loop means between said resistance paths and said terminals for matching electrically the trimming potentiometer to its inductive and capacitive input and output values.
3 more elements
Dependencies are inferred from the claim text.