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Energy pump voltage regulator

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TLDR
In this paper, a plurality of cascaded stages are provided for increasing and regulating the voltage appearing at the input terminals of a power supply, each stage comprises an inductive energy storage device, a switching device; a control device; and a discharge path.
Abstract
A circuit for increasing and regulating the voltage appearing at the input terminals of a power supply. A plurality of cascaded stages are provided. Each stage comprises: an inductive energy storage device; a switching device; a control device; and a discharge path. Control signals, having a selectable sequential time relation therebetween, are provided to the stages so that energy discharged from adjacent stages is caused to overlap in time. The amount of overlap is adjustable and is dependent upon the sequential time relation between the control signals which is selected.

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References
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Variable impedance switching regulator

TL;DR: In this article, a DC step-up voltage regulator with a series arrangement of a raw DC source and an energy storing inductor which are alternately connected to a low impedance circuit to build up the inductor current and to an output circuit which includes a capacitor which is charged by the current flow from the inductors.
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TL;DR: In this article, the transmitter circuit is provided with a transformer with a primary winding to which direct current is applied and a secondary coil which has two secondary windings connecting over a resistance to a transistor bridging each of the supply lines of the consumer while the other secondary winding is in a circuit including a pair of thyristors connected in antiparallel.