CN101382569B - Circuit breaking test device - Google Patents
Circuit breaking test device Download PDFInfo
- Publication number
- CN101382569B CN101382569B CN2007100768849A CN200710076884A CN101382569B CN 101382569 B CN101382569 B CN 101382569B CN 2007100768849 A CN2007100768849 A CN 2007100768849A CN 200710076884 A CN200710076884 A CN 200710076884A CN 101382569 B CN101382569 B CN 101382569B
- Authority
- CN
- China
- Prior art keywords
- circuit
- charging current
- pulse
- amplifying
- relay
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention provides a powerdown testing device including a pulse forming circuit, an amplifying shaping circuit and a drive output circuit which are successively connected in series. The pulse forming circuit provides original pulse signals for controlling AC electric supply on/off of the tested electrical device, and includes a capacitor charging/discharging portion, a pulse width adjusting portion and a charging current amplifying portion. The capacitor charging/discharging portion generates charging current through the charging/discharging process of the capacitor and outputs the current to the pulse width adjusting portion. The pulse width adjusting portion is used for adjusting the width of the original pulse signal. The charging current amplifying portion is used for amplifying the charging current and transferring into voltage and outputting to the amplifying shaping circuit. The amplifying shaping circuit is used for amplifying and shaping the original pulse signal. The drive output circuit is used for controlling the on/off of the AC electric supply of the tested circuit according to the pulse signal. The powerdown testing device provided by the invention has simple construction, low cost, extremely high cost performance, high generated pulse precision, continuously adjustable pulse width in the required range and simple operation.
Description
Technical field
The invention belongs to the electric equipment technical field of measurement and test, particularly, relate to the technology of the anti-outage of electric equipment performance test.
Background technology
Bad phenomenon should not take place in electric equipment, especially domestic electric appliance under of short duration off-position, for example for televisor, abnormal voice, flower screen, deadlock etc. can not occur.This requirement is the important topic that product design must be faced, also be the key project that product quality detects, for this reason, need corresponding outage detection device, so that to the influence of machine performance, guarantee that product meets customer requirements behind detection and the analysis electric equipment instant cut-off.
At present, be not specifically designed to the home equipment of electric equipment fast break test on the market, electric equipment manufacturer or give a long price for the checkout equipment of import, as Switzerland Xia Funa SCHAFFNERTUM2003 checkout equipment etc., perhaps clear-cut hand switch machine testing.
At the detection of equipment fast break, the time range that SCHAFFNER TUM2003 provides is 2ms-99s, yet in the practical application, most electric equipments especially domestic electric appliance only need detect enough in the 20ms-400ms scope.Because power-off time small power supply again is unaffected, more greatly fully can the manual simulation, therefore, there is no need to use import instrument for the outage detection of household electrical appliance.
Because import equipment exists cost too high, and the problem of the wasting of resources, the analog power fast break is come by manually pulling power switch in the production commercial city of many household electrical appliance, such its time interval of survey method is wayward, precision can't guarantee, and 100ms is difficult to accomplish with interior power supply fast break manual simulation, can't satisfy accurate test, meticulous designing requirement.
Summary of the invention
The object of the present invention is to provide a kind of circuit breaking test device, aim to provide a kind of simple structure, the anti-outage of lower-cost household electrical appliance performance test apparatus.
The present invention is achieved in that a kind of circuit breaking test device, is used for controlling the break-make of the AC power of tested electric equipment, and described device comprises pulse shaping circuit, amplification and rectification circuit and the driving output circuit of series connection successively, wherein:
Described pulse shaping circuit is used to provide the original burst signal of the described tested electric equipment AC power break-make of control;
Described amplification and rectification circuit is used for that described original burst signal is amplified shaping to be handled;
Described driving output circuit is used for controlling according to described pulse signal the break-make of described tested circuit AC power.
Described pulse shaping circuit specifically comprises capacitor charge and discharge part, pulse width modulation part and charging current amplifier section, described electric capacity impulse electricity part produces charging current by the capacitor charge and discharge process and outputs to described pulse width modulation part, described pulse width modulation partly is used for regulating the width of described original burst signal, and described charging current amplifier section is used for outputing to described amplification and rectification circuit with described charging current amplification and after converting voltage to.
Described capacitor charge and discharge part specifically comprises power supply (VCC), reversing switch (K1), charge and discharge capacitance (C1) and transistor (Q1), described reversing switch quilt (K1) is when stirring, described charge and discharge capacitance (C1) is reverse, produce the base stage that described charging current outputs to described transistor (Q1), described transistor (Q1) outputs to described pulse width modulation part after described charge and discharge capacitance (C1) charging current is amplified.
Described pulse width modulation partly is that adjustable potentiometer (R4) and another transistor (Q5) of connecting with the emitter of described transistor (Q1) are formed, offer the size of the base current of described another transistor (Q5) by the change adjustment of described adjustable potentiometer (R4) resistance, under the situation of same rechargeable energy, be used for adjusting the time of described another transistor (Q5) conducting, thereby adjust the width of described original burst signal, can change the time of fast break then.
The Standard resistance range of described adjustable potentiometer (R4) can be 0 to 5K ohm, also can be wideer.。
Described charging current amplifier section comprises triode (Q5) and collector resistance (R1) and collector capacitance (C2), and described triode (Q5) is connected into the common emitter circuit form, and the charging voltage more than the 0.7V is carried out processing and amplifying.
Described amplification and rectification circuit is the common emitter amplifying circuit of being made up of triode (Q3) and resistance (R2), is used for the voltage signal of input is amplified shaping.
Described driving output circuit adopts relay output to drive, and described relay winding is by the output signal control of described amplification and rectification circuit, and the normally opened contact of described relay is connected in series among the live wire of tested household electrical appliance AC power cord.
Described relay output drives and comprises transistor (Q2) and relay (J1), is connected with relay (J1) winding, diode (D1) and electric capacity (C4) in parallel between power supply (VCC) and triode (Q2) collector.
Described driving output circuit is that solid-state relay SSR or controllable silicon drive output circuit.
The present invention overcomes the deficiencies in the prior art, employing is formed the outage testing apparatus by pulse shaping circuit, amplification and rectification circuit and the driving output circuit of series connection successively, break-make with the tested equipment AC power of its output control, enter the technical scheme of finishing the anti-outage performance test of tested equipment, outage testing apparatus simple structure provided by the invention, with low cost, has high performance price ratio, and the pulse precision height that produces, pulsewidth is adjustable continuously within the required range, and is simple to operate.
Description of drawings
Fig. 1 is the theory diagram of the described circuit breaking test device of the embodiment of the invention;
Fig. 2 is the circuit diagram of the described circuit breaking test device of the embodiment of the invention;
Fig. 3 is the described triode Q1 of an embodiment of the invention emitter oscillogram;
Fig. 4 is the described triode Q5 of embodiment of the invention collector waveform figure;
Fig. 5 is the collector waveform figure of the described Q3 of the embodiment of the invention;
Fig. 6 is the collector waveform figure of the described Q4 of the embodiment of the invention;
Fig. 7 is the drive current waveform figure of described relay J 1 output circuit of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The theory diagram of the circuit breaking test device that the embodiment of the invention provides comprises pulse shaping circuit, amplification and rectification circuit and driving output circuit three parts as shown in Figure 1, and they are connected successively, with the break-make of the tested equipment AC power of its output control.
Wherein pulse shaping circuit provides the original burst signal that meets test request; Amplification and rectification circuit is used for that original burst signal is amplified shaping to be handled to obtain to meet the waveform that relay control requires; Drive the break-make of the power drive relay that output circuit is used to provide enough.
Fig. 2 is the circuit diagram of the circuit breaking test device that provides of the embodiment of the invention, and wherein, pulse shaping circuit comprises capacitor charge and discharge part, pulse width modulation part and charging current amplifier section.
The capacitor charge and discharge part: this part circuit is by power supply VCC, reversing switch K1 (dpdt double-pole double-throw (DPDT)), and charge and discharge capacitance C1, transistor Q1 forms.Wherein C1 band asterisk mark represents to adopt high-accuracy capacitor.K1 is connected into the form of reversing switch, and promptly the 1-6 pin of K1 connects, and the 3-4 pin connects, and the 4th pin meets VCC, and the 6th pin connects the base stage of Q1.After connecting like this, suppose that circuit powers up, promptly just following negative charging has been finished on the C1 (if 0.1u also can adjust according to actual conditions), and upper end 12V, lower end such as R4 are 3.24k, and then the lower end is 1.2V.When K1 toggled it to the either party, then electric capacity was reverse, and the charging balance is upset, and can set up a new balance immediately very soon, and Q1 is connected into the mode that electric current amplifies, and base bias was provided to transistor (Q5) the electric current amplification back that capacitor C 1 discharges and recharges.In addition, can also be implemented under the capacity of less charging capacitor, the pulse width in the relative broad range is provided.In the charging process, Q1 electrifies and banishes big effect, promptly several microamperes electric current, is converted to several milliamperes electric current, is used for providing biasing to Q5, as shown in Figure 3.
Pulse width (being power-off time) is regulated part: this part is realized by R4.Adjusting by adjustable potentiometer R4 (as 0-5k Ω) changes, and certainly, if equipment has needs, also can select greater or lesser potentiometer for use.Adjust R4, then changed the size of the electric current that offers Q5, under the situation of same rechargeable energy, just changed the time length that offers the base current that Q5 can conducting, thereby play the effect of the length of regulating back level relay power-off time.Wherein R4 adopts linear precision resistor.
Suppose that variable resistor R4 has eight scale values, the corresponding relation such as the following table of actual measurement back level power-off time and scale:
| Scale | Power-off time (ms) | Resistance value (Ω) |
| 1 | 18 | 0 |
| 2 | 50 | 235 |
| 3 | 100 | 690 |
| 4 | 150 | 1.24k |
| 5 | 200 | 1.84k |
| 6 | 250 | 2.5k |
| 7 | 300 | 3.24k |
| 8 | 400 | 4.85k |
Charging current amplifier section: form by triode Q5 and collector resistance R1, collector capacitance C2.R1 is bigger to the duration of charging influence, because R1 is the pull-up resistor of Q5, the little then drive current of pull-up resistor is also little, drive current is little just to mean that a same rechargeable energy can continue the long time, for improving timing accuracy, should select the low precision resistance of temperature coefficient for use, for example 680 Europe+/-1% metalfilmresistor.Charging and discharging currents is non-linear, the waveform of triode Q1 emitter as shown in Figure 4, the waveform of triode Q5 collector is as shown in Figure 5.Illustrating that some triode Q5 is the ingredient in charging current loop, also is the voltage amplification part that charging and discharging currents is converted to voltage output, and voltage amplifier circuit is a common emitter circuit.When the base voltage of Q5 during greater than about 0.7V, Q5 is then by by transferring state of saturation (magnifying state can very fast end) to, charging current is by dying down gradually by force, when arriving 0.7V gradually Deng the Q5 base voltage, the upset that ends by being saturated to can take place in Q5 gradually, this has just formed comparatively complete pulse signal, further handles for the back level and lays a good foundation.
Amplification and rectification circuit is the common emitter amplifying circuit of being made up of triode Q3 and resistance R 2, and preceding magnitude voltage signals is amplified shaping, and its waveform as shown in Figure 5.For further improving output waveform, present embodiment has increased the reverse amplification circuit that one-level is made up of triode Q4, resistance R 3 and capacitor C 3 again, and its waveform as shown in Figure 6.
Driving output circuit in the embodiment of the invention adopts relay output to drive, constitute by transistor Q2, relay J 1, capacitor C 4 and diode D1, the grounded emitter of triode, base stage connects the output of amplification and rectification circuit, is connected in parallel to relay winding, diode D1 and capacitor C 4 between power supply and triode Q2 collector.The normally opened contact of relay J 1 is connected in series among the live wire of tested household electrical appliance AC power cord, the negative pole of diode D1 connects positive source, reverse voltage when it can release the relay disconnection here prevents to puncture triode Q2 and improves fast response time.Trembling when 5 pairs of eliminations of capacitor C relay contact is switched on or switched off has certain effect, the relay performance in the time of can improving high-speed switch, and its drive current waveform is as shown in Figure 7.
When the resistance of potentiometer R4 changes, then adjusted the size of the charging current of having been amplified by Q1, under the situation of identical rechargeable energy, just determined to flow through the length of the time of Q5 base stage, thereby further determine Q5 by the length of saturated perdurability in-saturated-procedures of turn-off, then this signal by late-class circuit through amplifying the length that has also just determined the relay on-off time after the shaping.
Output circuit can also use solid-state relay (SSR) to realize, can realize that also slewing rate also can be faster with other circuit such as controllable silicons.
When using this device to detect, earlier variable resistor (potentiometer) R4 is screwed into minimum (being that resistance is minimum), after the energising, whenever stir K switch 1 one time, then produce and once discharge and recharge action, after amplification, shaping, driving are handled, just produced the break impulse of a minimum by the tested electric equipment of relay J 1 control, rotation R4 increases pulse interval gradually, whether toggle switch K1 repeatedly, observing thus can operate as normal after the of short duration within the required range outage of detected equipment.
Note,, then need after break impulse finishes, stir K1 again if need continued operation K1.The time of break impulse can be read by the scale (fixed by above-mentioned contrast relationship voting) of potentiometer.
As mentioned above, characteristics of the present invention are to have high performance price ratio, and realize adjustable continuously in the required scope, and the pulse precision height is simple to operate.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. circuit breaking test device is used for controlling the break-make of the AC power of tested electric equipment, it is characterized in that described device comprises pulse shaping circuit, amplification and rectification circuit and the driving output circuit of series connection successively, wherein:
Described pulse shaping circuit is used to provide the original burst signal of the described tested electric equipment AC power break-make of control; This pulse shaping circuit specifically comprises capacitor charge and discharge part, pulse width modulation part and charging current amplifier section, described capacitor charge and discharge part produces charging current by the capacitor charge and discharge process and outputs to described pulse width modulation part, described pulse width modulation partly is used for regulating the width of described original burst signal, and described charging current amplifier section is used for outputing to described amplification and rectification circuit with described charging current amplification and after converting voltage to;
Described amplification and rectification circuit is used for that described original burst signal is amplified shaping to be handled;
Described driving output circuit is used for controlling according to described pulse signal the break-make of described tested circuit AC power.
2. device according to claim 1, it is characterized in that, described capacitor charge and discharge part specifically comprises power supply (VCC), reversing switch (K1), charge and discharge capacitance (C1) and transistor (Q1), described reversing switch quilt (K1) is when stirring, described charge and discharge capacitance (C1) is reverse, produce the base stage that described charging current outputs to described transistor (Q1), described transistor (Q1) outputs to described pulse width modulation part after being used for amplifying according to the charging current of described charge and discharge capacitance (C1).
3. device according to claim 2, it is characterized in that, described pulse width modulation partly is adjustable potentiometer (R4) and another transistor (Q5) of connecting with the emitter of described transistor (Q1), offer the size of the base current of described another transistor (Q5) by the change adjustment of described adjustable potentiometer (R4) resistance, following at same rechargeable energy, be used for adjusting the time of described another transistor (Q5) conducting, thereby adjust the width of described original burst signal.
4. device according to claim 3 is characterized in that, the Standard resistance range of described adjustable potentiometer (R4) is 0 to 5K ohm.
5. device according to claim 1, it is characterized in that, described charging current amplifier section comprises triode (Q5) and collector resistance (R1) and collector capacitance (C2), described triode (Q5) is connected into the common emitter circuit form, and the charging voltage more than the 0.7V is carried out processing and amplifying.
6. device according to claim 1 is characterized in that, described amplification and rectification circuit is the common emitter amplifying circuit of being made up of triode (Q3) and resistance (R2), is used for the voltage signal of input is amplified shaping.
7. device according to claim 1, it is characterized in that, described driving output circuit adopts relay output to drive, described relay winding is by the output signal control of described amplification and rectification circuit, and the normally opened contact of described relay is connected in series among the live wire of tested household electrical appliance AC power cord.
8. device according to claim 7, it is characterized in that, described relay output drives and comprises transistor (Q2) and relay (J1), is connected with relay (J1) winding, diode (D1) and electric capacity (C4) in parallel between power supply (VCC) and triode (Q2) collector.
9. device according to claim 1 is characterized in that, described driving output circuit is that solid-state relay SSR or controllable silicon drive output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100768849A CN101382569B (en) | 2007-09-05 | 2007-09-05 | Circuit breaking test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100768849A CN101382569B (en) | 2007-09-05 | 2007-09-05 | Circuit breaking test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101382569A CN101382569A (en) | 2009-03-11 |
| CN101382569B true CN101382569B (en) | 2011-11-09 |
Family
ID=40462516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100768849A Expired - Fee Related CN101382569B (en) | 2007-09-05 | 2007-09-05 | Circuit breaking test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101382569B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103648029B (en) * | 2013-12-06 | 2016-09-28 | 乐视致新电子科技（天津）有限公司 | The energising guard method of intelligent television and system |
| CN103809089B (en) * | 2014-01-25 | 2017-07-28 | 广东电网公司东莞供电局 | For the production method for the calibration pulse for detecting high-tension apparatus shelf depreciation |
| CN103983866B (en) * | 2014-04-09 | 2017-06-06 | 成都国光电气股份有限公司 | A kind of filament test device |
| CN104184314B (en) * | 2014-09-05 | 2017-09-08 | 山东华芯电子有限公司 | A kind of energy-storage travelling wave tube power-off automatic discharge circuit and its charging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1396314A (en) * | 1971-09-03 | 1975-06-04 | British Aircraft Corp Ltd | Pulse driving circuits |
| CN85203688U (en) * | 1985-09-02 | 1987-05-20 | 陈寅 | Transistor start-stop oscillator |
| CN2039028U (en) * | 1988-08-24 | 1989-06-07 | 浙江大学 | Dynamic-characteristics tester for a thyristor |
| CN2500028Y (en) * | 2001-10-22 | 2002-07-10 | 杨全兴 | Touching type multiple switch |
-
2007
- 2007-09-05 CN CN2007100768849A patent/CN101382569B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1396314A (en) * | 1971-09-03 | 1975-06-04 | British Aircraft Corp Ltd | Pulse driving circuits |
| CN85203688U (en) * | 1985-09-02 | 1987-05-20 | 陈寅 | Transistor start-stop oscillator |
| CN2039028U (en) * | 1988-08-24 | 1989-06-07 | 浙江大学 | Dynamic-characteristics tester for a thyristor |
| CN2500028Y (en) * | 2001-10-22 | 2002-07-10 | 杨全兴 | Touching type multiple switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101382569A (en) | 2009-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208580348U (en) | A kind of constant current load circuit and electronic load and power parameter test macro | |
| CN101382569B (en) | Circuit breaking test device | |
| CN103970117B (en) | MCU chip detection method and circuit | |
| CN107591186B (en) | Voltage and current test automatic switching circuit, phase change unit test system and method | |
| TW201403087A (en) | Wires detecting apparatus | |
| CN109062304A (en) | A kind of constant current load circuit and a kind of electronic load and related system | |
| CN110749819A (en) | Circuit breaker divide-shut brake dropout action voltage testing arrangement | |
| CN111007389A (en) | Testing arrangement of mainboard | |
| CN201421501Y (en) | Secondary radar universal detector | |
| CN106896281A (en) | A kind of method of testing of the transient state common mode inhibition parameter to numeral isolation class device | |
| CN103698578A (en) | Power output control method of automatic electric power meter reading system and automatic electric power meter reading system | |
| CN102928649A (en) | Current sensor for static synchronous compensator | |
| CN100426654C (en) | Precision current sensor used for electric machine control | |
| CN104635052A (en) | Switching circuit applied to contact resistance testing equipment of electromagnetic relay | |
| CN202533526U (en) | General test circuit of switch sensor or solenoid valve | |
| CN113092987A (en) | Current chip step test system | |
| CN201788222U (en) | AC-DC (alternating current-direct current) compatible isolated voltage sampling circuit | |
| CN107422246A (en) | A kind of signal amplifier automated testing method | |
| CN101424724B (en) | Method for rapidly and precision detecting magnetic circuit switch of electromagnetic relay and apparatus thereof | |
| CN203849632U (en) | Microcurrent measurement amplifying circuit | |
| CN202916330U (en) | Current sensor used for static synchronous compensator | |
| CN217085219U (en) | Power output circuit of analog battery | |
| CN214335148U (en) | Novel circuit breaker mechanical characteristic measurement auxiliary device | |
| CN209895333U (en) | Power supply testing device for hard disk backboard of server | |
| CN211402545U (en) | Experimental device for measuring resistance by using oscilloscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20170905 |