CN104330748A - High-voltage switching power supply output ripple test circuit and test method thereof - Google Patents
High-voltage switching power supply output ripple test circuit and test method thereof Download PDFInfo
- Publication number
- CN104330748A CN104330748A CN201410521855.9A CN201410521855A CN104330748A CN 104330748 A CN104330748 A CN 104330748A CN 201410521855 A CN201410521855 A CN 201410521855A CN 104330748 A CN104330748 A CN 104330748A
- Authority
- CN
- China
- Prior art keywords
- power supply
- voltage
- test circuit
- output
- switch power
- 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
Landscapes
- Tests Of Electronic Circuits (AREA)
Abstract
The invention relates to the technical field of high-voltage switching power supply ripple test circuits, and discloses a high-voltage switching power supply output ripple test circuit and a test method thereof. The test circuit adopted by the method comprises output voltage V0+ and output voltage V0- of a high-voltage switching power supply, a capacitor 1 and a resistor 2. Output voltage V0+ of the high-voltage switching power supply is connected with one end of the capacitor 1. The other end of the capacitor 1 is connected with one end of the resistor 2. The other end of the resistor 2 is connected with output voltage V0-. Output voltage V0+ and output voltage V0- of the high-voltage switching power supply are connected with a power supply output load RL. The high-voltage switching power supply output ripple test circuit is completed by less parts and components so that use is simple and testing is convenient, and thus the high-voltage switching power supply output ripple test circuit has wide application prospect in the aspect of high-voltage power supply test technology.
Description
Technical field
The present invention relates to high-voltage switch power supply ripple test circuit engineering field, particularly relate to a kind of high-voltage switch power supply output ripple test circuit and method of testing.
Background technology
High-voltage switch power supply is common circuit in Switching Power Supply.General high-voltage switch power supply is all high voltage, and small area analysis, power is little.Even if like this, when testing high voltage power supply, still to take care.And special equipment is also needed for the test of high-voltage power supply.Loaded down with trivial details for low-tension supply during the test of such high-voltage power supply, complicated.
Wherein high-voltage power supply ripple test, generally also needs specific apparatus.Such as High Pressure Difference sub-probe.But High Pressure Difference sub-probe is on the high side, and some high-voltage probes have auxiliary source, use little convenience.So also can bring certain complicacy to test, affect testing efficiency.
Summary of the invention
For above-mentioned technical matters, the object of this invention is to provide a kind of high pressure ripple test circuit and method of testing.It only just can form simple high-voltage switch power supply ripple test circuit with a small amount of components and parts, and its test is simple and convenient.
For achieving the above object, the scheme of the present invention's employing is as follows:
A kind of high-voltage switch power supply output ripple test circuit, include high-voltage switch power supply output voltage Vo+, output voltage Vo-, electric capacity 1, resistance 2, described high-voltage switch power supply output voltage Vo+ receives one end of electric capacity 1, the other end of electric capacity 1 receives one end of resistance 2, and the other end of resistance 2 receives output voltage Vo-.
A method of testing for high-voltage switch power supply output ripple test circuit, adopt high-voltage switch power supply output ripple test circuit to test, its step is as follows:
1) assemble high-voltage switch power supply output ripple test circuit, after the output of high-voltage switch power supply and test circuit, load RL are electrically connected and connect, resistance 2 impedance adopted in described test circuit is greater than power supply output load RL impedance; And ignore its impact on load RL;
2) electric capacity 1 adopted in described test circuit is high-frequency ceramic electric capacity, and according to the characteristic of electric capacity, logical interchange hinders direct current, makes the output ripple of high-voltage switch power supply, passes through from electric capacity 1, resistance 2, and the ripple forming resistance 2 two ends is exactly output ripple;
3) be taken as ripple test point to the two ends of resistance 2, then low-tension supply method of testing routinely is equally tested.
By adopting technique scheme, the present invention has following beneficial effect:
A kind of high-voltage switch power supply output ripple test circuit, solve the problem that high-voltage switch power supply ripple test needs High Pressure Difference sub-probe, circuit devcie is few, convenient test.
Accompanying drawing explanation
Fig. 1 is a kind of high-voltage switch power supply output ripple test circuit figure of the present invention.
Embodiment
Below by further illustrating this patent by reference to the accompanying drawings.
As shown in Figure 1, a kind of high-voltage switch power supply output ripple test circuit, include high-voltage switch power supply output voltage Vo+, output voltage Vo-, electric capacity 1, resistance 2, described high-voltage switch power supply output voltage Vo+ receives one end of electric capacity 1, the other end of electric capacity 1 receives one end of resistance 2, and the other end of resistance 2 receives output voltage Vo-.
After the output of high-voltage switch power supply connects according to Fig. 1, because resistance 2 is far longer than power supply output load RL, so can be ignored it in theory to load effect.Again because electric capacity 2 is high-frequency ceramic electric capacity, according to the characteristic of electric capacity, logical interchange hinders direct current, the output ripple of such high-voltage switch power supply just almost passes through from electric capacity 1, resistance 2, the ripple at such resistance 2 two ends is exactly output ripple, and this ripple can low-tension supply method of testing routinely equally be tested.
This circuit completes high pressure switch power supply output ripple test circuit by less components and parts, and use simple, convenient test, has a wide range of applications in high-voltage power supply measuring technology.
Claims (4)
1. a high-voltage switch power supply output ripple test circuit, it is characterized in that: include the output voltage Vo+ of high-voltage switch power supply, output voltage Vo-, electric capacity 1, resistance 2, described high-voltage switch power supply output voltage Vo+ receives one end of electric capacity 1, the other end of electric capacity 1 receives one end of resistance 2, and the other end of resistance 2 receives output voltage Vo-; Output voltage Vo+, the output voltage Vo-of described high-voltage switch power supply are connected with power supply output load RL.
2. a high-voltage switch power supply output ripple test circuit, is characterized in that: the impedance of described resistance 2 is greater than power supply output load RL impedance.
3. a kind of high-voltage switch power supply output ripple test circuit according to claim 1, is characterized in that: described electric capacity 1 is high-frequency ceramic electric capacity.
4. a method of testing for high-voltage switch power supply output ripple test circuit as claimed in claim 1, is characterized in that: adopt high-voltage switch power supply output ripple test circuit to test, its step is as follows:
1) assemble high-voltage switch power supply output ripple test circuit, after the output of high-voltage switch power supply and test circuit, load RL are electrically connected and connect, resistance 2 impedance adopted in described test circuit is greater than power supply output load RL impedance; And ignore its impact on load RL;
2) electric capacity 1 adopted in described test circuit is high-frequency ceramic electric capacity, and according to the characteristic of electric capacity, logical interchange hinders direct current, makes the output ripple of high-voltage switch power supply, passes through from electric capacity 1, resistance 2, and the ripple forming resistance 2 two ends is exactly output ripple;
3) be taken as ripple test point to the two ends of resistance 2, then low-tension supply method of testing routinely is equally tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410521855.9A CN104330748A (en) | 2014-09-30 | 2014-09-30 | High-voltage switching power supply output ripple test circuit and test method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410521855.9A CN104330748A (en) | 2014-09-30 | 2014-09-30 | High-voltage switching power supply output ripple test circuit and test method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104330748A true CN104330748A (en) | 2015-02-04 |
Family
ID=52405510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410521855.9A Pending CN104330748A (en) | 2014-09-30 | 2014-09-30 | High-voltage switching power supply output ripple test circuit and test method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104330748A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954588A (en) * | 2016-02-25 | 2016-09-21 | 中国科学院等离子体物理研究所 | Synchronization phasing tester |
| CN106019169A (en) * | 2016-05-11 | 2016-10-12 | 深圳市优必选科技有限公司 | power supply ripple noise test probe and test method |
| CN112230159A (en) * | 2020-10-27 | 2021-01-15 | 洛阳隆盛科技有限责任公司 | A high-voltage power supply detector and testing method |
| CN113960353A (en) * | 2021-10-19 | 2022-01-21 | 合肥科威尔电源系统股份有限公司 | High-precision low-ripple testing device and method for high-voltage power supply |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080150547A1 (en) * | 2006-12-22 | 2008-06-26 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Electronic load |
| CN103033769A (en) * | 2012-12-28 | 2013-04-10 | 海信（山东）空调有限公司 | Fault detection method of three-phase power supply |
| CN204166111U (en) * | 2014-09-30 | 2015-02-18 | 洛阳隆盛科技有限责任公司 | A kind of high-voltage switch power supply output ripple test circuit |
-
2014
- 2014-09-30 CN CN201410521855.9A patent/CN104330748A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080150547A1 (en) * | 2006-12-22 | 2008-06-26 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Electronic load |
| CN103033769A (en) * | 2012-12-28 | 2013-04-10 | 海信（山东）空调有限公司 | Fault detection method of three-phase power supply |
| CN204166111U (en) * | 2014-09-30 | 2015-02-18 | 洛阳隆盛科技有限责任公司 | A kind of high-voltage switch power supply output ripple test circuit |
Non-Patent Citations (1)
| Title |
|---|
| 邵海明等: "直流高压电源纹波测量装置", 《第四届全国电磁计量大会文集》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954588A (en) * | 2016-02-25 | 2016-09-21 | 中国科学院等离子体物理研究所 | Synchronization phasing tester |
| CN106019169A (en) * | 2016-05-11 | 2016-10-12 | 深圳市优必选科技有限公司 | power supply ripple noise test probe and test method |
| CN112230159A (en) * | 2020-10-27 | 2021-01-15 | 洛阳隆盛科技有限责任公司 | A high-voltage power supply detector and testing method |
| CN113960353A (en) * | 2021-10-19 | 2022-01-21 | 合肥科威尔电源系统股份有限公司 | High-precision low-ripple testing device and method for high-voltage power supply |
| CN113960353B (en) * | 2021-10-19 | 2024-05-31 | 科威尔技术股份有限公司 | High-precision low-ripple testing device of high-voltage power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103236787B (en) | Capacity discharge method and circuit | |
| CN104330748A (en) | High-voltage switching power supply output ripple test circuit and test method thereof | |
| CN204188702U (en) | A kind of current detection circuit | |
| NZ734420A (en) | A device intrinsically designed to resonate, suitable for rf power transfer as well as group including such device and usable for the production of plasma | |
| CN103887990A (en) | Novel AC-AC converter based on Buck-Boost | |
| CN103969498A (en) | High-power high-frequency power supply output overvoltage detection circuit | |
| CN204166111U (en) | A kind of high-voltage switch power supply output ripple test circuit | |
| CN103117659A (en) | Current closed-loop control circuit for series load resonant converter | |
| CN109412595A (en) | A kind of sample circuit | |
| CN104777340A (en) | Circuit for testing standby current | |
| CN204465342U (en) | A kind of two-way ultralow pressure DC/DC converter | |
| CN103116075B (en) | Intelligent phase-checking device for P-type power distribution station | |
| CN103178696B (en) | Power circuit | |
| CN203251234U (en) | Switching power supply voltage regulator circuit | |
| CN208479463U (en) | A kind of starting output detection protection circuit | |
| CN202713260U (en) | Touch switch | |
| EP3086456A3 (en) | Leakage current suppression circuit and ac-to-dc power supply incorporating the same | |
| CN203688696U (en) | Volt-ampere characteristic tester | |
| CN205811848U (en) | The Switching Power Supply IC circuit of superposition frequency jitter | |
| CN204258650U (en) | Resistance-capacitance depressurization power circuit | |
| CN204514992U (en) | Circuit for testing standby current | |
| CN204696910U (en) | A circuit to prevent direct loading of power supply | |
| CN204316474U (en) | For the pwm circuit of Switching Power Supply remote control benchmark | |
| TWI470253B (en) | A dc power source test system with energy recycle | |
| CN204440217U (en) | Based on the power circuit of three-terminal voltage-stabilizing chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150204 |