Electricity: power supply or regulation systems – External or operator controlled – Using an impedance as the final control device
Patent
1999-01-22
2000-10-24
Wong, Peter S.
Electricity: power supply or regulation systems
External or operator controlled
Using an impedance as the final control device
323224, 323284, 324426, H02J 312
Patent
active
061372803
ABSTRACT:
A universal power manger capable of power converting a universal range of unregulated power inputs into a high-resolution programmable regulated (constant) output voltage or a high-resolution programmable (constant) current and of charging and/or diagnosing standard battery chemistries with a universal range of unregulated AC and DC power inputs. It includes an extremely high resolution monolithic potentiometer of at least 512 positions. Preferably, two or more extremely high resolution monolithic potentiometers are used to create a high resolution resistance chain, each having at least 512 positions and at least one tap point set according to a user selected output voltage and/or current. Each potentiometer has a resultant tap point selected by an analog switch in accordance with a user selected output that determines overall resistance in the resistance chain, the output voltage being proportional to the overall resistance. A microprocessor with embedded control software controls the tap points and selection thereof in accordance with user selections. A current sense circuit and feedback loop is included for generating a current output in response to the current through the current sense circuit.
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Ackermann Eric
Hicks William Leslie
Laxton Gary L.
Science Applications International Corporation
Wong Peter S.
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