Precision thin film AC voltage divider

Details Precision thin film AC voltage divider Precision thin film AC voltage divider

2007-09-11

2007-09-11

Lee, K. Richard (Department: 2832)

Electrical resistors

Plural separate diverse resistors

C338S319000, C338S295000, C216S016000, C360S319000

Reexamination Certificate

active

11257670

ABSTRACT:
A precision AC input voltage divider of input resistance RIand feedback resistance RFon a substrate is printed as a serpentine pattern for a thin line of resistive material. The input resistance is formed between a first and second terminal, and feedback resistance is formed between the second terminal and a third terminal. A first metallic conductor is formed on the substrate, connected to the first terminal, disposed to be adjacent to the input resistance, and having a distributed capacitive coupling to the input resistance that compensates for corresponding distributed stray capacitance from the input resistance to a circuit ground. A second metallic conductor is formed on the substrate, connected to the third terminal, disposed to be adjacent the feedback resistance, and having a distributed capacitive coupling to the feedback resistance that compensates for corresponding distributed stray capacitance from the feedback resistance to the circuit ground.

REFERENCES:
patent: 5041191 (1991-08-01), Watson
patent: 6344952 (2002-02-01), Biskeborn et al.

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