Power supply circuit
US-9225257-B2 · Dec 29, 2015 · US
Power-factor correction using voltage-to-current matching
US8975788B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8975788-B2 |
| Application number | US-201213431433-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 27, 2012 |
| Priority date | Mar 27, 2012 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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An example apparatus includes a power-factor correction (PFC) circuit coupleable to a primary load that exhibits a change in resistance with a change in applied voltage, with the respective voltage being a primary-load voltage, and current through the primary load being a primary-load current. The PFC circuit is configured to provide an auxiliary load and control current therethrough, with the respective current being an auxiliary-load current. In this regard, the PFC circuit is configured to control the auxiliary-load current such that the sum of the primary-load current and auxiliary-load current is a substantially-constant proportion of the primary-load voltage, the respective sum being a sum current.
First claim
Opening claim text (preview).
What is claimed is: 1. An apparatus comprising: a power-factor correction (PFC) circuit coupleable to a primary load that exhibits a change in resistance with a change in applied voltage, the respective voltage being a primary-load voltage, and current through the primary load being a primary-load current, wherein the PFC circuit is configured to provide an auxiliary load and control current therethrough, the respective current being an auxiliary-load current, the PFC circuit be…
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Frequently asked questions
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- What does patent US8975788B2 cover?
- An example apparatus includes a power-factor correction (PFC) circuit coupleable to a primary load that exhibits a change in resistance with a change in applied voltage, with the respective voltage being a primary-load voltage, and current through the primary load being a primary-load current. The PFC circuit is configured to provide an auxiliary load and control current therethrough, with the …
- Who is the assignee on this patent?
- Buenz Mark J, Seidel Greg, Rosemount Aerospace Inc
- What technology area does this patent fall under?
- Primary CPC classification H02M1/42. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).