Load current compensated type voltage sampling circuit

Details Load current compensated type voltage sampling circuit Load current compensated type voltage sampling circuit

1999-08-24

2002-11-19

Saras, Steven (Department: 2675)

Computer graphics processing and selective visual display system

Display driving control circuitry

C345S205000, C324S650000, C323S208000

Reexamination Certificate

active

06483501

ABSTRACT:

BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to a load current compensated voltage sampling circuit, wherein the sampling voltage is compensated by utilizing different load current values of the detected sample as parameters for transforming into an intended display target value.
(b) Description of the Prior Art
All AC or DC power sources have internal impedance. Therefore the measured end voltages at no-load, low load, heavy load and overload conditions vary by the load current and internal impedance so that it is very difficult to detect the average value in frequent load changes.
SUMMARY OF THE INVENTION
The present invention relates to a load current compensated voltage sampling circuit, wherein different load current values of a detected sample are used as parameters to compensate the sampling AC or DC voltage at no-load, low load, heavy load and overload conditions for transforming into an intended display target value.


REFERENCES:
patent: 4620069 (1986-10-01), Godwin et al.
patent: 5600526 (1997-02-01), Russell et al.
patent: 6011416 (2000-01-01), Mizuno et al.
patent: 6046594 (2000-04-01), Mavretic

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