CN2689583Y - High-frequency and high-voltage generators - Google Patents
High-frequency and high-voltage generators Download PDFInfo
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- CN2689583Y CN2689583Y CN 200420025073 CN200420025073U CN2689583Y CN 2689583 Y CN2689583 Y CN 2689583Y CN 200420025073 CN200420025073 CN 200420025073 CN 200420025073 U CN200420025073 U CN 200420025073U CN 2689583 Y CN2689583 Y CN 2689583Y
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Abstract
The utility model relates to a generator for high frequency and high voltage used for an X-ray diffractometer, which belongs to the technical field of power supply. The generator for high frequency and high voltage comprises a rectifying filter circuit, a power factor correcting circuit, a power amplifying circuit and a high voltage generating circuit, wherein, the high voltage generating circuit comprises the input terminal of a double high voltage transformer, the primary stages of the double high voltage transformer are connected in parallel, and the secondary stages of the double high voltage transformer are connected in series. The double high voltage transformer is connected with parallel voltage doubling units with more than two stages. The parallel voltage doubling unit comprises diodes, both negative electrodes of one diode are connected oppositely, and both positive electrodes of the other diode are connected oppositely. The center connecting point of the diode of which the negative electrodes are connected oppositely and the center connecting point of the diode of which the positive electrodes are connected oppositely are connected through a capacitor, and both outside terminals of the diodes are directly connected respectively. The center connecting points of the two adjacent parallel voltage doubling unit with two stages are directly connected, and two outside connecting points are connected through a capacitor respectively. The utility model realizes the design purpose with a simple and exquisite circuit structure and has the characteristices of high power and high stability. The utility model reduces the requirements on the compression resistance of the elements, and the purposes of volume reduction and cost reduction are achieved.
Description
Technical field
The utility model relates to a kind of high-frequency and high-voltage generator, and especially a kind of high-frequency and high-voltage generator that is applied to high-power X-ray diffractometer belongs to power technique fields.
Background technology
Understand according to the applicant, the high pressure generator that is used for x-ray instrument and so on high-tension apparatus at present adopts the power frequency high voltage generator usually.It mainly uses SCR control 220V or 380V power turn-on angle, behind the power frequency high voltage transformer, carries out the secondary multiplication of voltage again, obtains high pressure output.The existing high pressure generator of this class requires height to the withstand voltage properties of voltage-multiplying circuit components and parts, so manufacturing cost is uneconomical, and efficient is not high in addition, stability is undesirable, and volume is big, Heavy Weight.
Find by retrieval; the Chinese patent application that application number is 01229763, the applying date is 07 month 06 day calendar year 2001 discloses a kind of high-frequency and high-voltage generator; comprise the voltage regulator and the high-tension transformer that link to each other with mains switch; one igniting switch links to each other with the secondary end of this high-tension transformer by protective resistance; and the primary side by a capacitor and a sensor transformer connects, and produces the moment high-frequency and high-voltage of 1000kV, 50kHz～120kHz with resonance principle.This high-frequency and high-voltage generator is applicable to devices such as sparking, igniting, and X-ray diffractometer high-power to needs, the high stable high-frequency and high-voltage power supply is also inapplicable.High-frequency and high-voltage power supply is existing the use on the medical X-ray scenograph, but its high-frequency and high-voltage power supply that adopts is not high to stability requirement, and power is little, and current/voltage is non-adjustable, is not suitable for the requirement of X-ray diffractometer to high pressure.
Summary of the invention
The technical problems to be solved in the utility model is: at the shortcoming that above prior art exists, proposes a kind of, manufacturing cost economy low to the components and parts requirement, be applicable to the high-frequency and high-voltage generator of X-ray diffractometer.
In order to solve above technical problem, high-frequency and high-voltage generator of the present utility model comprises current rectifying and wave filtering circuit, circuit of power factor correction, power amplification circuit and high-pressure generating circuit, the input termination power supply of described current rectifying and wave filtering circuit, the input of output termination circuit of power factor correction, the input of the output termination power amplification circuit of described circuit of power factor correction, the output termination high-pressure generating circuit of described power amplification circuit, described high-pressure generating circuit contains two high-tension transformer inputs, the elementary parallel connection of described pair of high-tension transformer, secondary series connection, connect the above parallel multiplication of voltage unit of secondary, described parallel multiplication of voltage unit contains the diode and the two anodal diodes that are connected relatively that two negative poles connect relatively, described two negative poles connect relatively between diode and the two anodal relative middle contacts that connect diodes and connect by electric capacity, described two negative poles connect relatively between two outside positive terminals of diode and two anodal two outside negative pole ends that connect diodes relatively and directly connect respectively, directly connect between the middle contact of the parallel multiplication of voltage unit of adjacent two-stage, be of coupled connections by charging capacitor respectively between the two outer contacts.
During work, AC power is input to the elementary of the two high-tension transformers of high-pressure generating circuit after rectifying and wave-filtering, power factor correction, power amplification, be coupled to two charging capacitors of parallel multiplication of voltage unit after boosting, and multiplication of voltage step by step, until the required high pressure of final output.In this process, each components and parts in the high pressure generator have all only born the voltage and current that is equivalent to prior art 1/2, therefore the withstand voltage of components and parts and the requirement of current value are obviously reduced, and reduced the volume of components and parts, improved the reliability and stability of power supply simultaneously relatively.
This shows that the utility model has been realized goal of the invention with circuit structure simply cleverly, helps to reduce cost, reduced volume is enhanced product performance.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the circuit block diagram of an embodiment of the utility model.
Fig. 2 is two high-tension transformer high-pressure generating circuit schematic diagrams among Fig. 1.
Embodiment
Embodiment one
The high-frequency and high-voltage generator of present embodiment comprises that circuit, current/voltage feedback circuit take place for current rectifying and wave filtering circuit, circuit of power factor correction, power amplification circuit, two high-tension transformer high-pressure generating circuit and two PWM as shown in Figure 1.Input termination 220V (or 380V) power supply of current rectifying and wave filtering circuit, the input of output termination circuit of power factor correction.The input of the output termination power amplification circuit of circuit of power factor correction.Circuit takes place and controls voltage and current respectively in two PWM, the external computer control mouth in control input end of circuit or manually control mouthful take place in the PWM that is used to control high pressure, amplitude by the computer control pulse-width modulation, thereby control high pressure output valve and current output value, output connect two high-tension transformer high-pressure generating circuits by power amplification circuit respectively.
Two high-tension transformer high-pressure generating circuits as shown in Figure 2, low-pressure end is two high-tension transformer T1, the T2 that is connected with the output of power amplification circuit, the elementary parallel connection of two high-tension transformers, secondary series connection is by connecing ten grades of parallel multiplication of voltage unit behind two capacitor C 0-1, the C0-1 '.The parallel multiplication of voltage unit of the first order contains diode D1-1, the D1-2 and two anodal diode D1-3, the D1-4 that are connected relatively that two negative poles connect relatively.Two negative poles connect between the middle contact of diode D1-1, D1-2 and two anodal relative connection diode D1-3, D1-4 relatively by capacitor C 1 connection.Two negative poles connect relatively between two outside positive terminals of diode D1-1, D1-2 and two anodal two outside negative pole end D1-3, the D1-4 that connect diodes relatively and directly connect respectively.Directly is connected between the middle contact of the parallel multiplication of voltage unit of the first order and second level two-stage, passes through capacitor C 1-2, C1-2 ' connection between the two outer contacts respectively.The situation of subsequent stages can be analogized, and does not give unnecessary details in addition.The parallel multiplication of voltage unit of afterbody is through resistance R and R ' output, and the voltage sample feedback circuit that constitutes by the alternate capacitance resistance ware of connection in series-parallel between this two resistance meets PWM circuit takes place.Above-mentioned diode is to improve withstand voltage by many diode series connection.
The high-frequency and high-voltage generator power supply of present embodiment adopts the DC-DC mapping mode to produce high pressure, the operating voltage 400V of high-pressure generating circuit input or 500V adopt PFC (power factor) to proofread and correct, by alternating current 220V or 380V rectifying and wave-filtering, thereby the power factor that makes alternating current 220V or 380V is brought up to by general about 64% and is approached 1, directly 220V or 380V is exchanged before having avoided simultaneously and carries out the pollution to consumer networks of a large amount of harmonic waves that rectification produces.Particularly, when 220V or the filtering of 380V AC rectification, improve power factor and by pulse width modulated amplifying power, elementary that signal amplitude is elevated to two high-tension transformers of series connection is secondary by two high-tension transformers for the pwm pulse signal that amplifies, voltage-multiplying circuit by back multiplication of voltage step by step again, the result in the end obtains required high pressure in the parallel multiplication of voltage unit of one-level.
This high voltage source adopts the feasible requirement to components and parts of two high-tension transformer structures of high-pressure generating circuit obviously to reduce, cost economy, and volume reduces, and weight saving is adopted pulse width modulated circuit structure form, efficient height, good stability in addition.Instrument internal is provided with over-voltage over-current protection circuit, overpower protection circuit, overheating protection circuit and power-on protection circuit.Over-voltage over-current protection circuit can prevent to cause that because of high pressure is out of control the too high external equipment that causes of output voltage damages.The overpower protection circuit function is when power output surpasses setting power, will export high pressure drop automatically to 0V, can prevent that outside sparking from causing the inner member damage.The power-on protection circuit guarantees that then each start must begin progressively to raise from low pressure, to avoid start load is impacted.
During work, output voltage is adjustable continuously.Output voltage and X-ray pipe tube current are all indicated with pointer gauge.Have manual adjustment electric current and voltage and the automatic function of adjusting electric current and voltage.In addition, also be provided with voltage supervision and electric current supervision end, the available digital voltmeter is directly measured.Compact integral structure, easy to use.Be suitable for the X-ray diffractometer high pressure generator and require the occasion of high power high stability high voltage source with other.
The key technical indexes is:
Operating frequency～20KHZ/40KHz
Output voltage 0～-60KV, adjustable continuously (voltage stabilizing operating state)
Output current 0～50mA, adjustable continuously,
Voltage supervision output 0～+ 5V (corresponding output voltage 0～-60KV)
Electric current supervision output 0～+ 5V (corresponding output current 0-50mA)
Filament supply output 12V/4A (direct current supply)
Six grades of power output 500/1000/1500/2000/2500/3000W
Power supply comprehensive stability degree is better than 0.03%.
Claims (3)
1. high-frequency and high-voltage generator, comprise current rectifying and wave filtering circuit, circuit of power factor correction, power amplification circuit and high-pressure generating circuit, the input termination power supply of described current rectifying and wave filtering circuit, the input of output termination circuit of power factor correction, the input of the output termination power amplification circuit of described circuit of power factor correction, the output termination high-pressure generating circuit of described power amplification circuit, it is characterized in that: described high-pressure generating circuit contains two high-tension transformer inputs, the elementary parallel connection of described pair of high-tension transformer, secondary series connection, connect the above parallel multiplication of voltage unit of secondary, described parallel multiplication of voltage unit contains the diode and the two anodal diodes that are connected relatively that two negative poles connect relatively, described two negative poles connect relatively between diode and the two anodal relative middle contacts that connect diodes and connect by electric capacity, described two negative poles connect relatively between two outside positive terminals of diode and two anodal two outside negative pole ends that connect diodes relatively and directly connect respectively, directly connect between the middle contact of the parallel multiplication of voltage unit of adjacent two-stage, be of coupled connections by charging capacitor respectively between the two outer contacts.
2. according to the described high-frequency and high-voltage generator of claim 1, it is characterized in that: also contain two PWM that control voltage and current respectively circuit takes place, the external computer control mouth in control input end of circuit takes place in the PWM that is used to control high pressure, and output connects two high-tension transformer high-pressure generating circuits by power amplification circuit respectively.
3. according to the described high-frequency and high-voltage generator of claim 2, it is characterized in that: the two series resistances output of the parallel multiplication of voltage unit of the afterbody of described high-pressure generating circuit, constitute the voltage sample feedback circuit by the alternate capacitance resistance ware of connection in series-parallel between described two series resistances, meet PWM circuit takes place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025073 CN2689583Y (en) | 2004-03-02 | 2004-03-02 | High-frequency and high-voltage generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025073 CN2689583Y (en) | 2004-03-02 | 2004-03-02 | High-frequency and high-voltage generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689583Y true CN2689583Y (en) | 2005-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420025073 Expired - Fee Related CN2689583Y (en) | 2004-03-02 | 2004-03-02 | High-frequency and high-voltage generators |
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| CN (1) | CN2689583Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946194A (en) * | 2012-12-12 | 2013-02-27 | 重庆大学 | High-gain interleaving boost converter |
| CN107360502A (en) * | 2017-08-30 | 2017-11-17 | 东莞中拓机械技术开发有限公司 | A kind of double 1000W (IR2) the power amplifier modules of pulsewidth modulation |
| CN110601548A (en) * | 2019-07-17 | 2019-12-20 | 王志勇 | High-frequency high-voltage control system based on networking and control method thereof |
-
2004
- 2004-03-02 CN CN 200420025073 patent/CN2689583Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946194A (en) * | 2012-12-12 | 2013-02-27 | 重庆大学 | High-gain interleaving boost converter |
| CN102946194B (en) * | 2012-12-12 | 2016-02-03 | 重庆大学 | A kind of high-gain alternation and parallel connection boosting converter |
| CN107360502A (en) * | 2017-08-30 | 2017-11-17 | 东莞中拓机械技术开发有限公司 | A kind of double 1000W (IR2) the power amplifier modules of pulsewidth modulation |
| CN107360502B (en) * | 2017-08-30 | 2023-12-22 | 东莞精恒电子有限公司 | Pulse width modulation double 1000W (IR 2) power amplifier module |
| CN110601548A (en) * | 2019-07-17 | 2019-12-20 | 王志勇 | High-frequency high-voltage control system based on networking and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 |