GB2610732A - Active surge suppression circuit, active surge suppression method, power supply and LED driver - Google Patents
Active surge suppression circuit, active surge suppression method, power supply and LED driver Download PDFInfo
- Publication number
- GB2610732A GB2610732A GB2217881.8A GB202217881A GB2610732A GB 2610732 A GB2610732 A GB 2610732A GB 202217881 A GB202217881 A GB 202217881A GB 2610732 A GB2610732 A GB 2610732A
- Authority
- GB
- United Kingdom
- Prior art keywords
- power supply
- surge suppression
- suppression circuit
- active
- active surge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
Abstract
An active surge suppression circuit, an active surge suppression method, a power supply and an LED driver. The active surge suppression circuit includes a detection module configured to detect a surge voltage of a power supply; and a suppression module configured to change the impedance or capacitance of an input side of the power supply when the surge voltage is detected.
Claims (14)
1. An active surge suppression circuit, comprising: a detection module configured to detect a surge voltage of a power supply; and a suppression module configured to change the impedance or capacitance of an input side of the power supply when the surge voltage is detected.
2. The active surge suppression circuit according to claim 1, wherein, the suppression module comprises: a first capacitor or a first resistor, which is connected to the input side of the power supply when the surge v oltage is detected.
3. The active surge suppression circuit according to claim 2, wherein, the suppression module further comprises: a first switch connected to the first capacitor in series, the first switch is turned on when the surge voltage is detected.
4. The active surge suppression circuit according to claim 2, wherein, the suppression module further comprises: a second switch connected to the first resistor in parallel, the second switch is turned off when the surge voltage is detected.
5. The active surge suppression circuit according to claim 1, wherein, the suppression module comprises: a second resistor, which is a variable resistor and its resistance is increased when the sur ge voltage is detected.
6. The active surge suppression circuit according to claim 1, wherein, the detection module comprises: a voltage dependent resistor (VDR) and a transistor.
7. The active surge suppression circuit according to any one of claims 1-6, wherein, the active surge suppression circuit is used to drive a light emitting dio de (LED) as output load.
8. A power supply, comprising: the active surge suppression circuit according to any one of claims 1-7; and
9. The power supply according to claim 8, wherein, the power supply further comprises: a filter module and a rectification module, the active surge suppression circuit is connected to an output end of the rectification module.
10. The power supply according to claim 8, wherein, the power supply further comprises: a power factor correction (PFC) module or a converter connected to the active surge suppression circuit.
11. The power supply according to claim 10, wherein, the power factor correction (PFC) module or the converter is a single stage PFC or converter.
12. The power supply according to any one of claims 8-11, wherein, the power supply is used to drive a light emitting diode (LED) as output load.
13. An LED driver, comprising: the active surge suppression circuit according to any one of claims 1-7.
14. An active surge suppression method, comprising: detecting a surge voltage of a power supply; and changing the impedance or capacitance of an input side of the power supply when the surge voltage is detected.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/094844 WO2021248259A1 (en) | 2020-06-08 | 2020-06-08 | Active surge suppression circuit, active surge suppression method, power supply and led driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202217881D0 GB202217881D0 (en) | 2023-01-11 |
| GB2610732A true GB2610732A (en) | 2023-03-15 |
Family
ID=78846642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2217881.8A Pending GB2610732A (en) | 2020-06-08 | 2020-06-08 | Active surge suppression circuit, active surge suppression method, power supply and LED driver |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2610732A (en) |
| WO (1) | WO2021248259A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013120101A1 (en) * | 2012-02-10 | 2013-08-15 | Transtector Systems, Inc. | Reduced let through voltage transient protection or suppression circuit |
| CN103457253A (en) * | 2012-06-05 | 2013-12-18 | 江苏固德威电源科技有限公司 | Over-voltage absorbing protective circuit capable of accurately presetting protection value |
| CN203387750U (en) * | 2013-08-29 | 2014-01-08 | 阮容芳 | Over-voltage protection efficient LED street lamp power supply |
| CN204069412U (en) * | 2014-05-06 | 2014-12-31 | 广东凯乐斯光电科技有限公司 | A kind of LED tunable optical power module with Radio Control Function |
| CN108134381A (en) * | 2018-01-16 | 2018-06-08 | 武汉盛帆电子股份有限公司 | Overvoltage crowbar, method and electronic equipment |
| US20200028358A1 (en) * | 2016-09-26 | 2020-01-23 | Mitsubishi Electric Corporation | Electronic device |
-
2020
- 2020-06-08 WO PCT/CN2020/094844 patent/WO2021248259A1/en active Application Filing
- 2020-06-08 GB GB2217881.8A patent/GB2610732A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013120101A1 (en) * | 2012-02-10 | 2013-08-15 | Transtector Systems, Inc. | Reduced let through voltage transient protection or suppression circuit |
| CN103457253A (en) * | 2012-06-05 | 2013-12-18 | 江苏固德威电源科技有限公司 | Over-voltage absorbing protective circuit capable of accurately presetting protection value |
| CN203387750U (en) * | 2013-08-29 | 2014-01-08 | 阮容芳 | Over-voltage protection efficient LED street lamp power supply |
| CN204069412U (en) * | 2014-05-06 | 2014-12-31 | 广东凯乐斯光电科技有限公司 | A kind of LED tunable optical power module with Radio Control Function |
| US20200028358A1 (en) * | 2016-09-26 | 2020-01-23 | Mitsubishi Electric Corporation | Electronic device |
| CN108134381A (en) * | 2018-01-16 | 2018-06-08 | 武汉盛帆电子股份有限公司 | Overvoltage crowbar, method and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021248259A1 (en) | 2021-12-16 |
| GB202217881D0 (en) | 2023-01-11 |
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