CN201490905U - High-frequency switching power supply - Google Patents
High-frequency switching power supply Download PDFInfo
- Publication number
- CN201490905U CN201490905U CN2009201682055U CN200920168205U CN201490905U CN 201490905 U CN201490905 U CN 201490905U CN 2009201682055 U CN2009201682055 U CN 2009201682055U CN 200920168205 U CN200920168205 U CN 200920168205U CN 201490905 U CN201490905 U CN 201490905U
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- circuit
- voltage
- oscillation transformer
- frequency
- capacitor
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- Expired - Fee Related
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Abstract
The utility model relates to a high-frequency switching power supply, which outputs voltage when alternating current input voltage passes through a bridge-type rectifier filter circuit and then passes through a high-voltage filter circuit, a high-frequency oscillating circuit, a high-frequency oscillation transformer, a low-voltage rectifier circuit and a constant voltage control circuit. The high-frequency molecular resonance music bed improves the numerical range of the input voltage, and simultaneously reduces the influence caused by circuit noises and increases the stability of output voltage.
Description
Technical field
The utility model relates to a kind of high frequency switch power.
Background technology
At present, the similar high frequency switch power product on the market exists the problems such as big, that output voltage is unstable, input voltage range is narrow of disturbing.And, damaging higher-order of oscillation pipe or higher-order of oscillation IC easily owing to there is not the over-current and-load protection system, interference simultaneously can have influence on other electronic product cisco unity malfunction.
Summary of the invention
The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and a kind of high frequency switch power is provided, and the utility model is realized by following scheme:
A kind of high frequency switch power comprises after AC-input voltage is passed through bridge rectifier filter circuit and passes through high-pressure filter circuit, high-frequency oscillating circuits, higher-order of oscillation transformer, lower pressure rectifier circuit, voltage stabilizing circuit successively to voltage follower circuit; Described voltage stabilizing circuit is through feedback circuit difference tremendously high frequency oscillation transformer and high-frequency oscillating circuits.The primary side of described higher-order of oscillation transformer has two windings, a winding constitutes the loop through oscillating circuit IC1, diode D5, capacitor C 2 and resistance R 5 in parallel successively, another winding constitutes the loop through resistance R 4, capacitor C 10, diode D7, and the secondary side of higher-order of oscillation transformer constitutes the loop through diode D6, capacitor C 8 and resistance R 10 backs in parallel.
Advantage of the present utility model is:
Improved the number range of input voltage, reduced the influence of circuit interference simultaneously and increased the stable of output voltage.
Description of drawings
Fig. 1 is the high frequency switch power block diagram;
Fig. 2 is the high frequency switch power schematic diagram.
Embodiment
As shown in Figure 1, a kind of high frequency switch power comprises after AC-input voltage is passed through bridge rectifier filter circuit 1 and passes through high-pressure filter circuit 2, high-frequency oscillating circuits 3, higher-order of oscillation transformer 4, lower pressure rectifier circuit 5, voltage stabilizing circuit 6 successively to voltage follower circuit 7.Voltage stabilizing circuit 6 is through feedback circuit 8 difference tremendously high frequency oscillation transformer 4 and high-frequency oscillating circuitss 3.
As shown in Figure 2, the primary side of higher-order of oscillation transformer has two windings, a winding constitutes the loop through oscillating circuit IC1, diode D5, capacitor C 2 and resistance R 5 in parallel successively, another winding constitutes the loop through resistance R 4, capacitor C 10, diode D7, and the secondary side of higher-order of oscillation transformer constitutes the loop through diode D6, capacitor C 8 and resistance R 10 backs in parallel.
Claims (1)
1. a high frequency switch power is characterized in that, AC-input voltage is passed through high-pressure filter circuit, high-frequency oscillating circuits, higher-order of oscillation transformer, lower pressure rectifier circuit, voltage stabilizing circuit to voltage follower circuit successively through behind the bridge rectifier filter circuit; Described voltage stabilizing circuit is through feedback circuit difference tremendously high frequency oscillation transformer and high-frequency oscillating circuits;
The primary side of described higher-order of oscillation transformer has two windings, a winding constitutes the loop through oscillating circuit IC1, diode D5, capacitor C 2 and resistance R 5 in parallel successively, another winding constitutes the loop through resistance R 4, capacitor C 10, diode D7, and the secondary side of higher-order of oscillation transformer constitutes the loop through diode D6, capacitor C 8 and resistance R 10 backs in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201682055U CN201490905U (en) | 2009-08-10 | 2009-08-10 | High-frequency switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201682055U CN201490905U (en) | 2009-08-10 | 2009-08-10 | High-frequency switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201490905U true CN201490905U (en) | 2010-05-26 |
Family
ID=42429771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201682055U Expired - Fee Related CN201490905U (en) | 2009-08-10 | 2009-08-10 | High-frequency switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201490905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978392A (en) * | 2016-06-07 | 2016-09-28 | 张家口市杰星电子科技有限公司 | Intelligent high voltage power supply for kitchen oil smoke purifier |
-
2009
- 2009-08-10 CN CN2009201682055U patent/CN201490905U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978392A (en) * | 2016-06-07 | 2016-09-28 | 张家口市杰星电子科技有限公司 | Intelligent high voltage power supply for kitchen oil smoke purifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20110810 |