CN104716947B - Coupling circuit for pulse generator and tested equipment power supply - Google Patents
Coupling circuit for pulse generator and tested equipment power supply Download PDFInfo
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- CN104716947B CN104716947B CN201310684895.0A CN201310684895A CN104716947B CN 104716947 B CN104716947 B CN 104716947B CN 201310684895 A CN201310684895 A CN 201310684895A CN 104716947 B CN104716947 B CN 104716947B
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Abstract
The invention relates to a coupling circuit for a pulse generator and a tested device power supply, which is respectively connected with the pulse generator and the tested device power supply, wherein the coupling circuit comprises a diode D1, a diode D2, a diode D3, a diode D4, a signal positive output end and a signal negative output end, the positive electrode of the diode D1 is connected with the output positive end of the pulse generator, the negative electrode of the diode D1 and the negative electrode of the diode D2 are respectively connected with the signal positive output end, the positive electrode of the diode D2 is respectively connected with the output negative end of the pulse generator, the negative electrode of the diode D3 and the negative electrode of the diode D4, the positive electrode of the diode D3 is connected with the tested device power supply positive electrode, and the positive electrode of the diode D4, the tested device power supply negative electrode and the signal negative output end are grounded. Compared with the prior art, the invention has the advantages of simple and practical circuit structure and the like.
Description
Technical Field
The present invention relates to a coupling circuit, and more particularly, to a coupling circuit for a pulse generator and a power supply of a device under test.
Background
In 7637 series of latest standards, a new rule is provided for simulating the P5 waveform of the load, and the output P5 pulse of the simulator is required to be superposed on the power supply of the tested device and then provided for the tested device, so as to test the anti-interference capability of the tested device in the load throwing process.
While the generation of the P5 pulse may have different schemes, whatever the scheme, the end result is to superimpose the output pulse waveform on the power supply of the device being connected, a process which we call coupling. There are many coupling modes, such as capacitive coupling and inductive coupling. Because of the other conditions constraints of the P5 pulse, the inductive or capacitive coupling mode is difficult, if not impossible, to implement in the pulse generating circuit, and the inductance and capacitance change the internal resistance of the generator. A satisfactory coupling circuit is thus created.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a coupling circuit for a pulse generator and a power supply of a tested device.
The aim of the invention can be achieved by the following technical scheme:
the coupling circuit for the power supply of the pulse generator and the tested equipment is connected with the power supply of the pulse generator and the tested equipment respectively and is characterized by comprising a diode D1, a diode D2, a diode D3, a diode D4, a positive signal output end and a negative signal output end, wherein the positive electrode of the diode D1 is connected with the positive output end of the pulse generator, the negative electrode of the diode D1 and the negative electrode of the diode D2 are respectively connected with the positive signal output end, the positive electrode of the diode D2 is respectively connected with the negative output end of the pulse generator, the negative electrode of the diode D3 and the negative electrode of the diode D4, the positive electrode of the diode D3 is connected with the positive electrode of the tested equipment power supply, and the positive electrode of the diode D4, the negative electrode of the tested equipment power supply and the negative signal output end are grounded.
Compared with the prior art, the invention has the following advantages:
the unidirectional conduction characteristic of the diode is skillfully utilized, and the coupling is realized under the special environment that the pulse generator is coupled with the power supply of the tested equipment, so that the inductor and the capacitor are not used; the internal resistance of the pulse generator is not changed, and the power supply facilities of the tested equipment are not affected; more importantly, the output energy of the pulse is not changed; the circuit structure is simple and practical.
Drawings
Fig. 1 is a specific circuit diagram of the present invention.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Examples
As shown in figure 1, a coupling circuit for a pulse generator and a tested device power supply is connected with the pulse generator and the tested device power supply respectively, the coupling circuit comprises a diode D1, a diode D2, a diode D3, a diode D4, a signal positive output end and a signal negative output end, the positive electrode of the diode D1 is connected with the output positive end of the pulse generator, the negative electrode of the diode D1 and the negative electrode of the diode D2 are connected with the signal positive output end respectively, the positive electrode of the diode D2 is connected with the output negative end of the pulse generator, the negative electrode of the diode D3 and the negative electrode of the diode D4 respectively, the positive electrode of the diode D3 is connected with the tested device power supply positive electrode, and the positive electrode of the diode D4, the tested device power supply negative electrode and the signal negative output end are grounded.
The coupling mode does not change the internal resistance of the pulse generator and does not influence the power supply of the EUT. The scheme is as follows: the positive pole of the power supply of the tested equipment is connected with the output negative end of the pulse generator through a diode, the negative end of the pulse generator is connected with the positive end of the pulse generator through a diode, so that a passage is provided for the power supply, the negative pole of the power supply of the tested equipment is connected with the ground, the ground is connected with the negative end of the pulse generator through a diode, the power supply can normally supply power to the tested equipment before the pulse arrives, and the pulse is coupled to the power supply of the tested equipment when the pulse arrives. Thereby realizing the coupling of the P5 pulse and the power supply of the tested equipment.
Claims (1)
1. The coupling circuit for the power supply of the pulse generator and the tested equipment is connected with the power supply of the pulse generator and the tested equipment respectively and is characterized by comprising a diode D1, a diode D2, a diode D3, a diode D4, a positive signal output end and a negative signal output end, wherein the positive electrode of the diode D1 is connected with the positive output end of the pulse generator, the negative electrode of the diode D1 and the negative electrode of the diode D2 are respectively connected with the positive signal output end, the positive electrode of the diode D2 is respectively connected with the negative output end of the pulse generator, the negative electrode of the diode D3 and the negative electrode of the diode D4, the positive electrode of the diode D3 is connected with the positive electrode of the tested equipment power supply, and the positive electrode of the diode D4, the negative electrode of the tested equipment power supply and the negative signal output end are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684895.0A CN104716947B (en) | 2013-12-13 | 2013-12-13 | Coupling circuit for pulse generator and tested equipment power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684895.0A CN104716947B (en) | 2013-12-13 | 2013-12-13 | Coupling circuit for pulse generator and tested equipment power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104716947A CN104716947A (en) | 2015-06-17 |
| CN104716947B true CN104716947B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310684895.0A Active CN104716947B (en) | 2013-12-13 | 2013-12-13 | Coupling circuit for pulse generator and tested equipment power supply |
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| CN (1) | CN104716947B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07213060A (en) * | 1994-01-21 | 1995-08-11 | Hitachi Ltd | Switching power unit |
| CN2257421Y (en) * | 1995-05-20 | 1997-07-02 | 吕跃进 | Multipurpose pulse generator |
| CN101969304A (en) * | 2010-09-09 | 2011-02-09 | 杭州士兰微电子股份有限公司 | Pulse generating circuit and pulse generating method for high-voltage integrated circuit |
| CN102116832A (en) * | 2009-12-30 | 2011-07-06 | 上海汽车集团股份有限公司 | Parameter tester for interference rejection circuit of vehicle power supply |
| CN202217996U (en) * | 2011-08-03 | 2012-05-09 | 临沂科锐电子有限公司 | Vehicle-mounted power supply unloading transient pulse inhibitor |
| CN102510206A (en) * | 2011-11-15 | 2012-06-20 | 中国兵器工业第二0五研究所 | Coupling peak absorption circuit at input end of motor |
| CN203675083U (en) * | 2013-12-13 | 2014-06-25 | 上海普锐马电子有限公司 | Coupling circuit used for pulse generator and power source of to-be-tested device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459377B (en) * | 2007-12-14 | 2011-09-28 | 鸿富锦精密工业（深圳）有限公司 | Circuit for generating negative voltage |
| US7977820B2 (en) * | 2008-02-14 | 2011-07-12 | Supertex, Inc. | Ultrasound transmit pulse generator |
-
2013
- 2013-12-13 CN CN201310684895.0A patent/CN104716947B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07213060A (en) * | 1994-01-21 | 1995-08-11 | Hitachi Ltd | Switching power unit |
| CN2257421Y (en) * | 1995-05-20 | 1997-07-02 | 吕跃进 | Multipurpose pulse generator |
| CN102116832A (en) * | 2009-12-30 | 2011-07-06 | 上海汽车集团股份有限公司 | Parameter tester for interference rejection circuit of vehicle power supply |
| CN101969304A (en) * | 2010-09-09 | 2011-02-09 | 杭州士兰微电子股份有限公司 | Pulse generating circuit and pulse generating method for high-voltage integrated circuit |
| CN202217996U (en) * | 2011-08-03 | 2012-05-09 | 临沂科锐电子有限公司 | Vehicle-mounted power supply unloading transient pulse inhibitor |
| CN102510206A (en) * | 2011-11-15 | 2012-06-20 | 中国兵器工业第二0五研究所 | Coupling peak absorption circuit at input end of motor |
| CN203675083U (en) * | 2013-12-13 | 2014-06-25 | 上海普锐马电子有限公司 | Coupling circuit used for pulse generator and power source of to-be-tested device |
Non-Patent Citations (1)
| Title |
|---|
| 无线无源的参数可控脉冲发生器;熊慧等;《仪器仪表学报》;20130415(第04期);全文 * |
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| CN104716947A (en) | 2015-06-17 |
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