CN101202001A - Inspection plate for vacuum fluorescent display with built-in chip - Google Patents
Inspection plate for vacuum fluorescent display with built-in chip Download PDFInfo
- Publication number
- CN101202001A CN101202001A CNA2006101195271A CN200610119527A CN101202001A CN 101202001 A CN101202001 A CN 101202001A CN A2006101195271 A CNA2006101195271 A CN A2006101195271A CN 200610119527 A CN200610119527 A CN 200610119527A CN 101202001 A CN101202001 A CN 101202001A
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- Prior art keywords
- selector switch
- vacuum fluorescent
- fluorescent display
- chip
- diode
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- Measuring Fluid Pressure (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
The invention discloses an inspection plate of a chip embedded vacuum fluorescent display. The invention realizes positive polarity and negative polarity power exchange and grid mesh current positive and negative polarity driven compensation through the variation of a switch or a solder joint; only providing one inspection plate of the chip embedded vacuum fluorescent display can check driving type chips. The vacuum fluorescent display used for controlling different type chips is characterized by small volume, low cost and high flexibility.
Description
Technical field
The present invention relates to a kind of inspection plate for vacuum fluorescent display with built-in chip, be used to have the inspection of the vacuum fluorescent display of chip.
Background technology
Chip embedded vacuum fluorescent display, different with vacuum fluorescent display places are chip for driving or control chip are integrated in product inside, only need input control signal and power supply on the external drive circuit.But the checkout facility of this product need carry out product examination by inspection plate, and inspection plate need add needed control model or drive signal.Because the chip kind of chip embedded vacuum fluorescent display generally is divided into big class: driving chip, control type chip.These two kinds of chips are divided into a lot of groups again, a plurality of series.Past, each new model exploitation was all to need to develop synchronously a pcb board that is used to check.Such cost is bigger.
Summary of the invention
The present invention is for fear of overlapping development, and the time that reduces exploitation, and a kind of inspection plate for vacuum fluorescent display with built-in chip is provided, and is used for general inspection and has driving chip, the various types of vacuum fluorescent displays of control type chip.
For of the requirement of the different chip embedded vacuum fluorescent display of correspondence to power supply, we have adopted the scheme with positive polarity and the exchange of negative polarity power supply. in addition, in order to improve the versatility of this design, the design of having adopted the aperture plate electric current to amplify is fit to the driving of large tracts of land aperture plate.Technical scheme of the present invention is, a kind of inspection plate for vacuum fluorescent display with built-in chip, it comprises power driving circuit, the aperture plate current compensation circuit, described power driving circuit comprises the power input part branch, the auto-excitation type signal generator divides and the power supply output, be characterized in, the transformer direct current output that auto-excitation type signal generator in described power driving circuit divides is connected to two selector switch, one of them selector switch is connected with the negative pole of a diode, the positive pole of another selector switch and another diode is connected, and the positive pole of last diode is connected the back with back one diode negative pole and filter capacitor connects and composes positive polarity and the negative polarity power supply exchanges output circuit; Be connected at the collector of the gauge tap pipe of described aperture plate current compensation circuit and also be connected to two selector switch, one termination VCC of one of them selector switch, the collector of another termination gauge tap pipe, the connection of this selector switch is used for negative polarity and drives compensation, one termination VDD2 of another selector switch, the collector of another termination gauge tap pipe, the connection of this selector switch are used for positive polarity and drive compensation.
Described selector switch can also be that the solder joint connection or the disconnection that change realize.
The invention has the beneficial effects as follows it is the driving compensation that changes the positive-negative polarity of the exchange that realizes positive polarity and negative polarity power supply and aperture plate electric current by switch or solder joint, only need provide a kind of inspection plate for vacuum fluorescent display with built-in chip just can check and have driving chip, the various types of vacuum fluorescent displays of control type chip have the advantages that volume is little, cost is low, dirigibility is high.
Description of drawings
Fig. 1 is an inspection plate for vacuum fluorescent display with built-in chip power drives part schematic circuit;
Fig. 2 is an aperture plate current compensation circuit schematic diagram.
Embodiment
By shown in Figure 1, a kind of inspection plate for vacuum fluorescent display with built-in chip, it comprises power driving circuit, the aperture plate current compensation circuit, described power driving circuit comprises the power input part branch, the auto-excitation type signal generator divides and the power supply output, be characterized in, the direct current output of the transformer T1 that auto-excitation type signal generator in described power driving circuit divides is connected to two selector switch J3, J4, one of them selector switch J3 is connected with the negative pole of a diode D5, another selector switch J4 is connected with the positive pole of another diode D3, and the positive pole of last diode D5 is connected back and filter capacitor C7 with back one diode D3 negative pole, C8 connects and composes positive polarity and the negative polarity power supply exchanges output circuit; By shown in Figure 2, collector at the gauge tap pipe Q3 of described aperture plate current compensation circuit also is connected to two selector switch J5, J6, the termination logic voltage VCC of one of them selector switch J5, be generally DC voltage 5V, the collector of another termination gauge tap pipe Q3, the connection of this selector switch J5 is used for negative polarity and drives compensation, the termination VDD2 of another selector switch J6, be generally more than the DC voltage 30V, the collector of another termination gauge tap pipe Q3, the connection of this selector switch J6 are used for positive polarity and drive compensation.
Claims (1)
1. inspection plate for vacuum fluorescent display with built-in chip, it comprises power driving circuit, the aperture plate current compensation circuit, described power driving circuit comprises the power input part branch, the auto-excitation type signal generator divides and the power supply output, it is characterized in that, the transformer direct current output that auto-excitation type signal generator in described power driving circuit divides is connected to two selector switch, one of them selector switch is connected with the negative pole of a diode, the positive pole of another selector switch and another diode is connected, and the positive pole of last diode is connected the back with back one diode negative pole and filter capacitor connects and composes positive polarity and the negative polarity power supply exchanges output circuit; Collector at the gauge tap pipe of described aperture plate current compensation circuit also is connected to two selector switch, one termination logic voltage VCC of one of them selector switch, the collector of another termination gauge tap pipe, the connection of this selector switch is used for negative polarity and drives compensation, one termination power high pressure VDD2 of another selector switch, the collector of another termination gauge tap pipe, the connection of this selector switch are used for positive polarity and drive compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101195271A CN101202001A (en) | 2006-12-13 | 2006-12-13 | Inspection plate for vacuum fluorescent display with built-in chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101195271A CN101202001A (en) | 2006-12-13 | 2006-12-13 | Inspection plate for vacuum fluorescent display with built-in chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101202001A true CN101202001A (en) | 2008-06-18 |
Family
ID=39517149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101195271A Pending CN101202001A (en) | 2006-12-13 | 2006-12-13 | Inspection plate for vacuum fluorescent display with built-in chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101202001A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555424A (en) * | 2018-05-30 | 2018-09-21 | 广州亨龙智能装备股份有限公司 | A kind of mounting structure and compact welding machine of welder transformer |
-
2006
- 2006-12-13 CN CNA2006101195271A patent/CN101202001A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555424A (en) * | 2018-05-30 | 2018-09-21 | 广州亨龙智能装备股份有限公司 | A kind of mounting structure and compact welding machine of welder transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20080618 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |