Power supply control device
US-2024305205-A1 · Sep 12, 2024 · US
Switching power supply and electronic device using the same
US9065342B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9065342-B2 |
| Application number | US-200913386631-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 24, 2009 |
| Priority date | Jul 24, 2009 |
| Publication date | Jun 23, 2015 |
| Grant date | Jun 23, 2015 |
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Abstract
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A switching power supply includes: transformer 60 which includes a primary winding and a secondary winding and outputs, through the secondary winding, an AC voltage based on the current supplied to the primary winding; switching element 61 which controls current supply to the primary winding; rectifying/smoothing circuit 65 which converts the AC voltage output from the secondary winding into a DC voltage; voltage detecting circuit 62 which detects the DC voltage converted by rectifying/smoothing circuit 65 ; feedback amplifier 63 which is supplied with the DC voltage detected by voltage detecting circuit 62 as one input and which is supplied with a reference voltage as the other input, so as to output a difference between the input voltage values; and control circuit 64 which controls switching element 61 , so as to eliminate the difference detected at feedback amplifier 63 . Upon receipt of an instruction signal from the outside, voltage detecting circuit 62 supplies to feedback amplifier 63 , a voltage higher than the voltage output before receipt of the instruction signal.
First claim
Opening claim text (preview).
The invention claimed is: 1. A switching power supply comprising: a transformer including a primary winding and a secondary winding, so that an AC voltage based on a current supplied to the primary winding is output through the secondary winding; a switching element which controls current supply to the primary winding; a rectifying/smoothing circuit which converts the AC voltage output from the secondary winding to a DC voltage; a voltage detecting circuit which detects the…
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Electricity · mapped topic
- H02M3/33507Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9065342B2 cover?
- A switching power supply includes: transformer 60 which includes a primary winding and a secondary winding and outputs, through the secondary winding, an AC voltage based on the current supplied to the primary winding; switching element 61 which controls current supply to the primary winding; rectifying/smoothing circuit 65 which converts the AC voltage output from the secondary winding i…
- Who is the assignee on this patent?
- Hosono Hideaki, Nec Display Solutions Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02M3/33507. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 23 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).