CN201733090U - Anti-surge circuit of nozzle control board - Google Patents
Anti-surge circuit of nozzle control board Download PDFInfo
- Publication number
- CN201733090U CN201733090U CN2010202824130U CN201020282413U CN201733090U CN 201733090 U CN201733090 U CN 201733090U CN 2010202824130 U CN2010202824130 U CN 2010202824130U CN 201020282413 U CN201020282413 U CN 201020282413U CN 201733090 U CN201733090 U CN 201733090U
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- Prior art keywords
- shower nozzle
- circuit
- control board
- surge
- nozzle control
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Abstract
The utility model provides an anti-surge circuit of a nozzle control board. The nozzle control board comprises a processing unit, a signal generator and a voltage control circuit. A start-up anti-surge circuit is arranged between the voltage control circuit and a power supply source of the nozzle control board. The start-up anti-surge circuit comprises an MOS tube T102, a capacitor C1 and resistors (R3, R4 and R5), wherein the resistor R5 is connected in parallel between the drain electrode (2) and the source electrode (3) of the MOS tube T102, the capacitor C1 is connected in parallel between the source electrode (3) and the grid electrode (1) of the MOS tube T102, the resistor R3 is connected in parallel at the two ends of the capacitor C1, and one end of the resistor R4 is connected with the grid electrode (1) of the MOS tube T102 and the other end is grounded. By arranging the start-up anti-surge circuit on the nozzle control board, tripping of the power supply source caused by the start-up surge current is effectively prevented.
Description
Technical field
The utility model relates to a kind of shower nozzle control board anti-surge circuit, relates to a kind of by reducing charging current, prolonging the circuit that the charging interval prevents that inkjet printer head control board start surge from causing Switching Power Supply to trip specifically.
Background technology
Piezoelectric ink jet is printed and is meant by applying voltage to piezoelectric crystal, makes it to take place at a high speed and slight distortion, and the printing ink in the black chamber is extruded from nozzle, realizes the printing of image or literal.Do the time spent when piezoelectric crystal is subjected to extraneous pulse voltage, piezoelectric crystal produces the volume reducing that distortion causes the nozzle ink cavity.Like this, an oil dripping China ink just penetrates from nozzle.Then, piezoelectric crystal restores to the original state, because surface tension effects, new printing ink enters nozzle.By the big flow nozzle that is arranged side by side, just can obtain desirable spray printing width and resolution.The duration of ignition and spark rate that the shower nozzle control board is used for controlling shower nozzle are set on ink-jet printer.The shower nozzle control board comprises single-chip microcomputer, FPGA/CPLD, voltage control circuit; Wherein FPGA/CPLD is used to produce the control signal of shower nozzle; Single-chip microcomputer receives the shower nozzle control signal that FPGA/CPLD sends, and regulates the parameter of ink-jet printer mainboard and shower nozzle control board, the work of control shower nozzle; Voltage control circuit is used for the control command according to single-chip microcomputer, controls the driving voltage that each shower nozzle needs.For the high pressure piezo jets, some voltage control circuit comprises booster circuit, impulse circuit and level shifting circuit, big filter capacitor during start just in the booster circuit all is in uncharged state, each control circuit also is in runaway condition, can produce very big surge current when therefore starting shooting, as shown in Figure 1, cause the power supply tripping operation easily.
The utility model content
At the problem that prior art exists, it is a kind of by reducing charging current, prolonging the circuit that the charging interval prevents that shower nozzle control board start surge from causing mains switch to trip that the purpose of this utility model is to provide.
For achieving the above object, the utility model proposes a kind of shower nozzle control board anti-surge circuit, the shower nozzle control board comprises processing unit, signal generator and voltage control circuit, wherein, signal generator is used to produce the control signal of shower nozzle, and sends control commands corresponding by processing unit to shower nozzle according to the control signal of shower nozzle; Processing unit receives the shower nozzle control signal that signal generator sends, and regulates the parameter of ink-jet printer mainboard and shower nozzle control board, the work of control shower nozzle; Voltage control circuit comprises booster circuit, pulse-generating circuit and level shifting circuit, the start anti-surge circuit is arranged between voltage control circuit and the shower nozzle control board power supply, it is characterized in that: described start anti-surge circuit comprises metal-oxide-semiconductor T102, capacitor C 1, resistance R 3, R4 and R5, resistance R 5 is connected in parallel between the drain electrode 2 and source electrode 3 of metal-oxide-semiconductor T102, between the source electrode 3 and grid 1 of capacitor C 1 paralleling MOS pipe T102, resistance R 3 is connected in parallel on the two ends of capacitor C 1, the grid 1 of one termination metal-oxide-semiconductor T102 of resistance R 4, other end ground connection.
Further, described metal-oxide-semiconductor T102 is the P-MOS pipe.
The utility model by anti-start surge circuit is set on the shower nozzle control board, the surge current that prevents to start shooting causes the power supply tripping operation effectively, improves the stability of shower nozzle control board work.
Description of drawings
Change in voltage curve chart when Fig. 1 is the start of surge circuit in the air in the prior art;
Fig. 2 is the structured flowchart of the shower nozzle control board of a specific embodiment of the utility model;
Fig. 3 is an anti-surge circuit schematic diagram in specific embodiment of the utility model;
Change in voltage curve chart when Fig. 4 is the start that is provided with behind the anti-surge circuit of the present utility model.
Embodiment
As shown in Figure 2, the shower nozzle control board of a specific embodiment of the utility model links to each other with shower nozzle with the ink-jet printer mainboard, the print data of shower nozzle is directed to mainboard, the shower nozzle control board comprises single-chip microcomputer, FPGA/CPLD, voltage control circuit and LVDS coffret, and FPGA/CPLD is used to produce the control signal of shower nozzle, as firing pulse, clock signal, pixel data, heating-up temperature etc., and send control commands corresponding by single-chip microcomputer to shower nozzle according to the control signal of shower nozzle; Single-chip microcomputer receives the shower nozzle control signal that FPGA/CPLD sends, and regulates the parameter of ink-jet printer mainboard and shower nozzle control board, the work of control shower nozzle; Nearly all parameter on the shower nozzle control board can be passed through the microcontroller serial port remote adjustment as nozzle temperature, sensor signal (paper is wide, paper is thick, liquid level etc. in the assistant print cartridges), clock signal.Voltage control circuit is used for the control command according to single-chip microcomputer, controls the driving voltage that each shower nozzle needs by its booster circuit.
Fig. 3 is the schematic diagram of anti-start surge circuit in the present embodiment, anti-start surge circuit of the present utility model is serially connected between shower nozzle control board Switching Power Supply and the voltage control circuit, anti-start surge circuit is by metal-oxide-semiconductor T102 and be connected in parallel on resistance R 5 between metal-oxide-semiconductor T102 drain electrode 2 and the source electrode 3, be connected in parallel on the capacitor C 1 between metal-oxide-semiconductor T102 grid 1 and the source electrode 3, reach resistance R 3, R4 formation; Resistance R 3 is connected in parallel on the two ends of capacitor C 1, the grid 1 of a termination metal-oxide-semiconductor T102 of resistance R 4, other end ground connection; Wherein, metal-oxide-semiconductor T102 and resistance R 5 are to prevent to start shooting the main element of surge, when just powering on, because capacitor C 1 both end voltage can not be suddenlyd change, metal-oxide-semiconductor grid 1 voltage approaches source electrode 3 voltages, metal-oxide-semiconductor T102 is in off state, electric current can only pass through from resistance R 5, and maximum current is drawn by I=U/R, and voltage one regularly, resistance is big more, and electric current is more little.After spending very short a period of time, capacitor C 1 charging is finished, and input voltage produces pressure drop after resistance R 3 makes grid 1 voltage of metal-oxide-semiconductor be lower than source electrode 3 voltages, the complete conducting of metal-oxide-semiconductor T102, and most electric currents have all passed through from this low impedance path.Because the boost switching circuit is arranged on the shower nozzle control board, input capacitance is very big, and anti-surge circuit is necessary.After anti-surge circuit is set, the voltage curve of start as shown in Figure 4, voltage early stage mild the rising, spend very short a period of time after the complete conducting of metal-oxide-semiconductor T102, output voltage is constant.
The utility model by anti-start surge circuit is set on the shower nozzle control board, the surge current that prevents to start shooting causes the power supply tripping operation effectively, improves the stability of shower nozzle control board work.
It is to be noted and any distortion of making according to embodiment of the present utility model all do not break away from the scope that spirit of the present utility model and claim are put down in writing.
Claims (2)
1. shower nozzle control board anti-surge circuit, the shower nozzle control board comprises processing unit, signal generator and voltage control circuit, wherein, signal generator is used to produce the control signal of shower nozzle, and sends control commands corresponding by processing unit to shower nozzle according to the control signal of shower nozzle; Processing unit receives the shower nozzle control signal that signal generator sends, and regulates the parameter of ink-jet printer mainboard and shower nozzle control board, the work of control shower nozzle; Voltage control circuit comprises booster circuit, pulse-generating circuit and level shifting circuit, the start anti-surge circuit is arranged between voltage control circuit and the shower nozzle control board power supply, it is characterized in that: described start anti-surge circuit comprises metal-oxide-semiconductor T102, capacitor C 1, resistance R 3, R4 and R5, resistance R 5 is connected in parallel between the drain electrode 2 and source electrode 3 of metal-oxide-semiconductor T102, capacitor C 1 is connected in parallel between the source electrode 3 and grid 1 of metal-oxide-semiconductor T102, resistance R 3 is connected in parallel on the two ends of capacitor C 1, the grid 1 of one termination metal-oxide-semiconductor T102 of resistance R 4, other end ground connection.
2. shower nozzle control board anti-surge circuit as claimed in claim 1 is characterized in that: described MOST102 pipe is the P-MOS pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202824130U CN201733090U (en) | 2010-08-05 | 2010-08-05 | Anti-surge circuit of nozzle control board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202824130U CN201733090U (en) | 2010-08-05 | 2010-08-05 | Anti-surge circuit of nozzle control board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733090U true CN201733090U (en) | 2011-02-02 |
Family
ID=43524246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202824130U Expired - Fee Related CN201733090U (en) | 2010-08-05 | 2010-08-05 | Anti-surge circuit of nozzle control board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801144A (en) * | 2011-05-23 | 2012-11-28 | 上海航天测控通信研究所 | Surge suppressors of switch for power supply and distribution |
| CN103904631A (en) * | 2012-12-31 | 2014-07-02 | 海洋王（东莞）照明科技有限公司 | Protection circuit |
-
2010
- 2010-08-05 CN CN2010202824130U patent/CN201733090U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801144A (en) * | 2011-05-23 | 2012-11-28 | 上海航天测控通信研究所 | Surge suppressors of switch for power supply and distribution |
| CN103904631A (en) * | 2012-12-31 | 2014-07-02 | 海洋王（东莞）照明科技有限公司 | Protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20190805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |