Power supply filter with active element assist

Details Power supply filter with active element assist Power supply filter with active element assist

1996-12-19

1998-02-24

Nguyen, Matthew V.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

327532, G05F 316

Patent

active

057214840

ABSTRACT:
A power supply filter is constructed with a capacitive element and an active element coupled to a filtered node and an impedance coupled between the filtered node and a power supply node. The filtered node for carrying a filtered version of a power supply signal on the power supply node. The active element having electrical characteristics such that the addition of the active element to the power supply filter reduces the amount of capacitance needed from the capacitive element to achieve a desired pole frequency for a given voltage drop across the impedance element.

REFERENCES:
patent: 3849677 (1974-11-01), Stacey et al.
patent: 4079375 (1978-03-01), Tacussel
patent: 5208719 (1993-05-01), Wei
patent: 5523665 (1996-06-01), Deaver
patent: 5532631 (1996-07-01), Ngo et al.
patent: 5596265 (1997-01-01), Wrathall et al.

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