Method and apparatus for signal extraction with sample and hold and release
AssigneeIntelesol, LLC
InventorMark Telefus
Life of this patent
Estimating the term…
Abstract
For AC-DC conversion, signal is extracted, then sampled and held and released. Extraction element receives AC signal to generate extracted signal, then sample and hold and release element receives the extracted signal to generate DC signal. Extraction and/or sample and hold and release signal processing may use microprocessor or controller programmably to generate the extracted signal and/or DC signal. Extraction is configurable such that AC signal is received at extraction time or temporal window, whereby said extraction element generates the extracted signal having an extraction current or voltage value during at least one extraction time, and preferably said sample and hold and release element generates the DC signal having the same extraction current or voltage value.
Claims12
A converter circuit, comprising:
- a first input node and a second input node, the first and second input nodes being configured to receive an input alternating current (AC) signal;
- a sample and hold circuit coupled to the first and second input nodes and configured to receive as input positive and negative half cycles of the AC signal;
- a capacitor comprising a first terminal coupled to an output node of the sample and hold circuit, and a second terminal coupled to the second input node;
- and
- a regulator circuit comprising an input coupled to the first terminal of the capacitor, and an output coupled to a first output node of the converter circuit;
- wherein the sample and hold circuit is further configured to:
- (i) couple the first input node of the converter circuit to the first terminal of the capacitor and to the input of the regulator circuit during a first portion and a second portion of each positive half cycle of the input AC signal to thereby utilize the input AC signal as a power source to charge the capacitor and for the regulator circuit to generate a direct current (DC) signal which is output on the first output node of the converter circuit;
- and
- (ii) decouple the first input node of the converter circuit from the first terminal of the capacitor and from the input of the regulator circuit during a third portion of each positive half cycle of the input AC signal, and during an entirety of each negative half cycle of the input AC signal, to thereby utilize the charged capacitor as an input voltage source to the input of the regulator circuit to maintain the output DC signal on the first output node of the converter circuit.
A method comprising:
- receiving, by a sample and hold circuit, positive and negative half cycles of an input alternating current (AC) signal on first and second input nodes;
- coupling, by the sample and hold circuit, the first input node to a terminal of a capacitor and to an input of regulator circuit during a first portion and a second portion of each positive half cycle of the input AC signal to thereby utilize the input AC signal as a power source to charge the capacitor and for the regulator circuit to generate an output direct current (DC) signal;
- and
- decoupling, by the sample and hold circuit, the first input node from the terminal of the capacitor and from the input of the regulator circuit during a third portion of each positive half cycle of the input AC signal, and during an entirety of each negative half cycle of the input AC signal, to thereby utilize the charged capacitor as an input voltage source to the input of the regulator circuit to maintain the output DC signal.
Dependencies are inferred from the claim text.