CN1979196A - Detecting device and detecting system - Google Patents
Detecting device and detecting system Download PDFInfo
- Publication number
- CN1979196A CN1979196A CN 200510102277 CN200510102277A CN1979196A CN 1979196 A CN1979196 A CN 1979196A CN 200510102277 CN200510102277 CN 200510102277 CN 200510102277 A CN200510102277 A CN 200510102277A CN 1979196 A CN1979196 A CN 1979196A
- Authority
- CN
- China
- Prior art keywords
- unit
- voltage
- pick
- resistance
- output terminal
- 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
Images
Landscapes
- Inverter Devices (AREA)
Abstract
The invention relates to a testing device that includes input end, converter circuit unit, voltage testing unit and input end. The input end is used to input DC power supply, and the converter circuit used to transform DC to AC and boost voltage. The output end is used to output AC. And voltage testing unit is used to measure the output voltage of testing device. The testing device is convenient to use.
Description
[technical field]
The present invention relates to a kind of detection system, particularly a kind of cold cathode ray tube detection system.
[background technology]
Along with the develop rapidly of science and technology, LCD becomes the main flow in the demonstration field gradually, but this also also has higher requirement to the reliability of LCD.And cold cathode ray tube (Cold Cathode Fluorescent Lamp, CCFL) be generally the main element of LCD, particularly the some modulating voltage of cold cathode ray tube is bigger to the reliability effect of LCD, seems very necessary so cold cathode ray tube is carried out the reliability detection.
See also Fig. 1, be a kind of cold cathode ray tube detection system of prior art.This detection system 100 comprises direct voltage source 120, inverter circuit unit 130 and oscillograph 150.This direct voltage source 120 is connected to the input end of this inverter circuit unit 130, and this oscillograph 150 is connected to the output terminal of this inverter circuit unit 130, and this direct voltage source 120 has output voltage and electric current Presentation Function.
When using this detection system 100, cold cathode ray tube 180 is connected to the output terminal of this inverter circuit unit 130, open this direct voltage source 120 and oscillograph 150, regulate the output voltage of this direct voltage source 120 from low to high and light this cold cathode ray tube 180.In the process that this cold cathode ray tube 180 is lighted, one maximum output voltage can appear in the output terminal of this inverter circuit unit 130, this maximum output voltage is the some modulating voltage of this cold cathode ray tube 180, and this lamp voltage value and corresponding current value are shown by this oscillograph 150 or calculate.When maximum output voltage appearred in this inverter circuit unit 130, the output voltage of this direct voltage source 120 was the secondary point modulating voltage of this cold cathode ray tube 180, and this secondary point lamp voltage value and corresponding current value are shown by this direct voltage source 120.
Yet, when this detection system 100 detects, this direct voltage source 120, oscillograph 150 and cold cathode ray tube 180 all need be connected to this inverter circuit unit 130, feasible connection is more loaded down with trivial details, and this connection is all temporary transient connection, connect unstablely, make the less stable that detects, thus inconvenient when causing this detection system 100 to detect.
[summary of the invention]
Detection system detects inconvenient problem in the prior art in order to solve, and is necessary to provide a kind of more convenient pick-up unit that detects.
Also be necessary to provide a kind of more convenient detection system that detects.
A kind of pick-up unit, it comprises input end, inverter circuit unit, voltage detection unit and output terminal, this input end is used for input dc power, this inverter circuit unit is used for dc inverter to be alternating current and to boost, alternating current output after this output terminal is used for this is boosted, this voltage detection unit is used for measuring the output voltage of this pick-up unit.
A kind of detection system, it comprises continuous direct voltage source and pick-up unit, this direct voltage source provides direct current for this pick-up unit, this pick-up unit comprises input end, inverter circuit unit, voltage detection unit and output terminal, this input end is used for input dc power, this inverter circuit unit is used for dc inverter to be alternating current and to boost, the alternating current output after this output terminal is used for this is boosted, and this voltage detection unit is used for measuring the output voltage of this pick-up unit.
Compared to prior art, this pick-up unit detects output voltage by voltage detection unit, and with voltage detection unit and the integration of inverter circuit unit, and set up lasting the connection, make that this pick-up unit stability is higher, and link to each other with cold cathode ray tube with direct voltage source by input and output side, thereby it is simple and stable higher to make that this detection system connects, so this detection system detects more convenient.
[description of drawings]
Fig. 1 is the synoptic diagram of a kind of cold cathode ray tube detection system of prior art.
Fig. 2 is the connection diagram of detection system one better embodiment of the present invention.
Fig. 3 is the structural representation of direct voltage source shown in Figure 2.
Fig. 4 is the circuit diagram of pick-up unit shown in Figure 2.
Fig. 5 is the inverter circuit cell schematics of pick-up unit shown in Figure 4.
Fig. 6 is the structural representation of pick-up unit shown in Figure 2.
[embodiment]
See also Fig. 2, be the synoptic diagram of detection system one better embodiment of the present invention, this detection system 200 comprises a direct current voltage source 220 and a pick-up unit 260, and this direct voltage source 220 is electrically connected with this pick-up unit 260, for this pick-up unit 260 provides power supply.This pick-up unit 260 is electrically connected with this cold cathode ray tube 280.
As shown in Figure 3, this direct voltage source 220 has an input end 221, a voltage display unit 223, a current displaing unit 224, a voltage-regulation knob 225, a current adjusting knob 226, a switch 228 and an output terminal 229.This input end 221 can connect the AC power of 220V or 110V, this voltage display unit 223 is used for showing the output voltage of this direct voltage source 220, this current displaing unit 224 is used for showing the output current of this direct voltage source 220, this voltage-regulation knob 225 is used for regulating the output voltage of this direct voltage source 220, this current adjusting knob 226 is used for regulating the output current of this direct voltage source 220, this switch 228 is used for opening or cutting out this direct voltage source 220, and these output terminal 229 exportable voltages are that 0V to 24V, electric current are the direct current of 0A to 5A.
As shown in Figure 4, this pick-up unit 260 comprises an input end 261, an inverter circuit unit 262, a voltage detection unit 263, a current detecting unit 268 and an output terminal 269.This input end 261, inverter circuit unit 262 and output terminal 269 connect successively, this voltage detection unit 263 and current detecting unit 268 are arranged between this inverter circuit unit 262 and the output terminal 269, are used for measuring the output voltage and the electric current of this pick-up unit 260.
This input end 261 has a positive terminal and a negative pole end, and this input end 261 is electrically connected with the output terminal 229 of this direct voltage source 220, and it is used for input dc power.
This inverter circuit unit 262 has an electrode input end 2621, a negative input 2622, a high-pressure side 2623 and a low pressure end 2624, this electrode input end 2621 links to each other with the positive terminal of this input end 261, and this negative input 2622 links to each other with the negative pole end of this input end 261; This inverter circuit unit 262 can be alternating current with dc inverter and boost, and by this high-pressure side 2623 and low pressure end 2624 High Level AC Voltage is exported again.
This voltage detection unit 263 comprises a voltage table 265 and two resistance 266,267, and it is used for measuring the output voltage of this pick-up unit 260.The resistance of this resistance 266 is much larger than this resistance 267, and the resistance of this resistance 266 is 3M Ω, and the resistance of this resistance 267 is 30K Ω.These two resistance 266,267 are connected in series between this high-pressure side 2623 and the low pressure end 2624, and High Level AC Voltage is carried out dividing potential drop.This voltage table 265 is connected in parallel with this resistance 267, and it is used to measure the dividing potential drop of this resistance 267.Then, can calculate the voltage of High Level AC Voltage according to the resistance of the dividing potential drop of this resistance 267 and these two resistance 266,267.And by setting the resistance of these two resistance 266,267, make the integral multiple of the voltage of this High Level AC Voltage for these resistance 267 dividing potential drops, the voltage of this High Level AC Voltage then is the integral multiple of these voltage table 265 readings.
This current detecting unit 268 is a reometer, and it is connected in series between this low pressure end 2624 and this output terminal 269, is used for measuring the output current of this pick-up unit 260.
This output terminal 269 has two ends, and wherein an end links to each other with resistance 266 with high-pressure side 2623, and the other end links to each other with this current detecting unit 268, and this output terminal 269 is used for exporting High Level AC Voltage.
As shown in Figure 5, this inverter circuit unit 262 comprises 273,274, two electric capacity 275,277 of 271,272, two transistors of 270, two resistance of an inductance and solenoid winding 276.The inductance value of this inductance 270 is 100 μ H, and it is used for the DC circuit part is partly isolated with oscillatory circuit.The resistance of these two resistance 271,272 is 3.6K Ω.These two transistors 273,274 are NPN type triode, and its model is ZTX1409A/ZTX.The capacitance of this electric capacity 275 is 0.22 μ F; This electric capacity 277 is a high-voltage capacitance, and its capacitance is 27pF.The model of this solenoid winding 276 is XFRM_NONLIN/CT-PRI/SEC, and it comprises three groups of primary coil L
1, L
2And L
3With one group of secondary coil L
4, these three groups of primary coil L
1, L
2And L
3Joint be respectively 2 and 3,4 and 5,1 and 6, this secondary coil L
4Joint be 7 and 8, this joint 1,2,4 and 7 is an end of the same name.
When work in this inverter circuit unit 262, direct current is supplied with the joint 3 and 4 of these two resistance 271,272 and solenoid winding 276 by this electrode input end 2621 and inductance 270, this solenoid winding 276 is started working, and the biasing resistor that these two resistance 271,272 are these two transistors 273,274, this direct current for these two transistors 273,274 provide bias voltage, starts working these two transistors 273,274 by these two resistance 271,272.
This electric capacity 275 connects this joint 2 and 5, the primary coil L of this electric capacity 275 and this solenoid winding 276
1And L
2Constitute the bikini oscillatory circuit, it can be an alternating current with dc inverter.
The collector of these two transistors 273,274 is connected to this electric capacity 275 two ends respectively, and the emitter of these two transistors 273,274 is connected to the primary coil L of this solenoid winding 276 respectively
3Joint 1 and 6, the primary coil L of these two transistors 273,274 and solenoid winding 276
3Constitute the feedback formula and recommend discharge circuit, so that this bikini oscillatory circuit is discharged.
The alternating current that produces during this bikini oscillatory circuit discharge is responded to the High Level AC Voltage of the generation of boosting by secondary coil L through this solenoid winding 276
4Joint 7 and 8 output.This electric capacity 277 is connected in series between this joint 7 and this high-pressure side 2623, and it is used for and this secondary coil L
4The high-voltage alternating electric resonance that induction generates is to keep vibration.
When using this detection system 200 to detect, cold cathode ray tube 280 is connected to the output terminal 269 of this pick-up unit 260, open this direct voltage source 220, the direct current of these direct voltage source 220 outputs is supplied with this inverter circuit unit 262 by this input end 261, this inverter circuit unit 262 is with dc inverter and boost and be High Level AC Voltage, by this output terminal 269 High Level AC Voltage is supplied with cold cathode ray tube 280 by this high-pressure side 2623 and low pressure end 2624 again.
Regulate the output voltage of this direct voltage source 220 from low to high and light this cold cathode ray tube 280.In the process that this cold cathode ray tube 280 is lighted, one maximum output voltage can appear in this voltage detection unit 263, this maximum output voltage is the some modulating voltage of this cold cathode ray tube 280, and this lamp voltage value and corresponding current value can be shown by this voltage detection unit 263 and current detecting unit 268.When maximum output voltage appears in this pick-up unit 260, the output voltage of this direct voltage source 220 is the secondary point modulating voltage of this cold cathode ray tube 280, and this secondary point lamp voltage value and corresponding current value can be shown by the voltage display unit 223 and the current displaing unit 224 of this direct voltage source 220.
See also Fig. 6; this pick-up unit 260 can further comprise a shell 279; this shell 279 is used for accommodating and protecting the element of this pick-up unit 260; it links to each other with direct voltage source 220 and cold cathode ray tube 280 with output terminal 269 by input end 261, improves the stability and the security of this pick-up unit 260.
This pick-up unit 260 detects output voltage by voltage detection unit 263, and with voltage detection unit 263 and 262 integration of inverter circuit unit, and set up lasting the connection, make that these pick-up unit 260 stability are higher, and link to each other with cold cathode ray tube 280 with direct voltage source 220 with output terminal 269 by defeated 261, thereby it is simple and stable higher to make that this detection system 200 connects, so this detection system 200 detects more convenient.
These two transistors 273,274 can also be the positive-negative-positive triode.
This current detecting unit 268 can also be arranged between this high-pressure side 2623 and this output terminal 269.
The voltage table 265 and the current detecting unit 268 of this voltage detection unit 263 can be voltage instrument and current instrument, and this voltage and current value can be read by the dial plate of this voltage instrument and current instrument; Can also be digital voltmeter and digital electronic ammeter, this voltage and current value can be read by the display screen of this digital voltmeter and digital electronic ammeter.This voltage detection unit 263 can also only be a voltage table.
Claims (10)
1. pick-up unit, it comprises input end, inverter circuit unit, voltage detection unit and output terminal, this input end is used for input dc power, this inverter circuit unit is used for dc inverter to be alternating current and to boost, alternating current output after this output terminal is used for this is boosted, this voltage detection unit is used for measuring the output voltage of this pick-up unit.
2. pick-up unit as claimed in claim 1 is characterized in that: this pick-up unit further comprises a current detecting unit, and it is arranged between this inverter circuit unit and the output terminal.
3. pick-up unit as claimed in claim 1 is characterized in that: this voltage detection unit comprises two resistance and a voltage table, this two resistance series connection, and the resistance value of these two resistance is unequal, and the less resistance of this voltage table and resistance value is in parallel.
4. pick-up unit as claimed in claim 1 is characterized in that: this voltage detection unit is a voltage table.
5. pick-up unit as claimed in claim 1 is characterized in that: this pick-up unit further comprises a shell, and it is used for accommodating the element of this pick-up unit.
6. detection system, it comprises continuous direct voltage source and pick-up unit, this direct voltage source provides direct current for this pick-up unit, this pick-up unit comprises input end, inverter circuit unit, voltage detection unit and output terminal, this input end is used for input dc power, this inverter circuit unit is used for dc inverter to be alternating current and to boost, the alternating current output after this output terminal is used for this is boosted, and this voltage detection unit is used for measuring the output voltage of this pick-up unit.
7. detection system as claimed in claim 6 is characterized in that: this pick-up unit further comprises a current detecting unit, and it is arranged between this solenoid winding and the output terminal.
8. detection system as claimed in claim 6 is characterized in that: this voltage detection unit comprises two resistance and a voltage table, this two resistance series connection, and the resistance value of these two resistance is unequal, and the less resistance of this voltage table and resistance value is in parallel.
9. detection system as claimed in claim 6 is characterized in that: this voltage detection unit is a voltage table.
10. detection system as claimed in claim 6 is characterized in that: this pick-up unit further comprises a shell, and it is used for accommodating the element of this pick-up unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510102277 CN1979196A (en) | 2005-12-08 | 2005-12-08 | Detecting device and detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510102277 CN1979196A (en) | 2005-12-08 | 2005-12-08 | Detecting device and detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1979196A true CN1979196A (en) | 2007-06-13 |
Family
ID=38130429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510102277 Pending CN1979196A (en) | 2005-12-08 | 2005-12-08 | Detecting device and detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1979196A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412166A (en) * | 2013-08-16 | 2013-11-27 | 常熟市苏常工程质量检测有限公司 | High-current test equipment |
-
2005
- 2005-12-08 CN CN 200510102277 patent/CN1979196A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412166A (en) * | 2013-08-16 | 2013-11-27 | 常熟市苏常工程质量检测有限公司 | High-current test equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2637775C2 (en) | Diagram of flyback quick start driver and method of excitation | |
| CN107093921B (en) | Intelligent charger with power failure detection function | |
| CN109066940A (en) | A kind of charge control method, circuit, charger and electric tool | |
| CN103954852B (en) | A kind of high-voltage large-capacity capacitor Method for Measuring Low Frequency Noise | |
| CN206876842U (en) | Measuring instrument power supply dump energy on-line checking circuit | |
| CN208283481U (en) | It is a kind of suitable for plurality of specifications crystal oscillator for electrical test circuit | |
| CN201804060U (en) | High-voltage insulation resistance tester of chip piezoelectric ceramic transformer | |
| CN1979196A (en) | Detecting device and detecting system | |
| CN201199256Y (en) | Electrolytic capacitor high-frequency great current tester | |
| WO2016078078A1 (en) | Charger system for battery starting current test | |
| CN108828356A (en) | It is a kind of suitable for plurality of specifications crystal oscillator for electrical test circuit | |
| CN100516895C (en) | Discharge lamp drive device and voltage detection circuit using same | |
| CN209344843U (en) | A kind of portable middle low power direct current mobile power source of exploration | |
| CN209280882U (en) | A kind of simulation motor load control equipment | |
| CN209673953U (en) | A kind of test circuit of power supply IC product | |
| CN201918084U (en) | Integrated circuit experiment board | |
| CN208433795U (en) | A kind of photovoltaic power supply control system | |
| CN2358460Y (en) | Tester for testing battery capacity | |
| CN100480716C (en) | Detector | |
| CN215448409U (en) | Backlight lighting jig control circuit and backlight lighting jig | |
| CN101145320A (en) | Multiple lamp tube drive circuit, planar light source and display device | |
| CN216117811U (en) | Tool circuit for detecting capacity and leakage current of farad capacitor | |
| CN100438300C (en) | Power supply detecting cirucit with power-saving under ready condition | |
| CN220340310U (en) | Cell module device and cell module system | |
| CN220254366U (en) | High-temperature high-voltage power supply block for downhole gamma detection tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |