CN1712139A - High-voltage power supply of electrostatic cooker hood - Google Patents
High-voltage power supply of electrostatic cooker hood Download PDFInfo
- Publication number
- CN1712139A CN1712139A CN 200410027708 CN200410027708A CN1712139A CN 1712139 A CN1712139 A CN 1712139A CN 200410027708 CN200410027708 CN 200410027708 CN 200410027708 A CN200410027708 A CN 200410027708A CN 1712139 A CN1712139 A CN 1712139A
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- resistance
- amplifier
- input
- 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
- Amplifiers (AREA)
Abstract
A high-voltage power supply for the electrostatic oil soot exhauster is composed of input rectifier, power amplifier, high-voltage transform circuit, high-voltage output rectifier, amplitude modulator, and frequency modulator.
Description
Technical field
The present invention relates to a kind of high voltage source of electrostatic dust collection equipment, the high voltage source that especially a kind of electrostatic smoke purifier is used.
Background technology
The high voltage source that existing electrostatic smoke purifier is used, its line construction mainly contain two kinds, and a kind of is power frequency supply, this power supply controllable silicon is as the power adjusting executive component, and high-tension transformer is huge duplex frequency boostering transformer, and its volume is big, output waveform is bad, and is bigger to the interference of electrical network; The 2nd, high frequency switch power though its volume is little, adopts pulsewidth or Frequency-variable Modulation, increases cost.
Above-mentioned two kinds of power supplys are two kinds of general power supplys of static fume machine, because field generator has following three basic basic demands to high voltage source: 1, pulse output, 2, output is reliable and stable, 3, amplitude is adjustable, 4, impedance matching.Above-mentioned two kinds of power supplys can not satisfy the functional requirement of the field generator in the electrostatic smoke purifier fully.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the above-mentioned prior art, and the high voltage source that the electrostatic smoke purifier that the independent amplitude modulation of a kind of energy, frequency modulation are provided is used, have that volume is little, cost is low, output waveform is stable and electric field between impedance matching, strengthen the effect of power pulse output.
For achieving the above object, the high voltage source that a kind of electrostatic smoke purifier is used, comprise input rectification circuit, power amplification circuit, high voltage variable volt circuit and high pressure output rectification circuit thereof, between input rectification circuit and power amplification circuit, also have modulation circuit and FM circuit, the setting signal input of described modulation circuit connects the output of input rectification circuit, the signal output part of modulation circuit is connected with two road inputs of FM circuit, and two road outputs of described FM circuit are connected with two road inputs of power amplification circuit respectively.
Described modulation circuit is made up of amplifier IC1-1, IC1-2, IC1-3, IC1-4, resistance R 1, R2, R3, R4, R5, R6, R7 and R8, adjustable resistance RP1, RP2, RP3, the positive input serial connection adjustable resistance RP1 of described amplifier IC1-1, resistance R 1 back are connected with the input rectification circuit output, constitute the setting signal of modulation circuit output amplitude; The positive input of described amplifier IC1-2 and adjustable resistance RP2, resistance R 2 serial connection backs connect the high pressure output rectification circuit, constitute the voltage negative feedback signal of modulation circuit, the positive input of described amplifier IC1-3 and adjustable resistance RP3, resistance R 3 serial connection backs are connected with power amplification circuit, form the Current Negative Three-Point Capacitance signal of modulation circuit, described adjustable resistance RP1, RP2, the other end on the RP3 connects ground wire, described amplifier IC1-1, IC1-2, the output of IC1-3 is series resistor R4 respectively, R5, be connected in parallel behind the R6, positive input with described amplifier IC1-4 is connected again, described amplifier IC1-1, IC1-2, reverse input end on the IC1-3 is connected across its output and corresponding resistance R 4 thereof respectively, between R5 or the R6, be connected in series by resistance R 8 between the reverse input end of amplifier IC1-4 and the ground wire, the output of amplifier IC1-4 is connected with two road inputs of FM circuit, and described resistance R 7 is connected across between the positive input and output thereof of IC1-4.Above-mentioned modulation circuit by regulating the input voltage value of input rectification circuit, is realized the adjusting to amplitude modulation circuit output end voltage, and the final change high voltage source output voltage amplitude that realizes.
Described FM circuit is made up of amplifier IC2-1, IC2-2, pulse square wave-generator IC3, gate circuit IC A-1, ICA-2, resistance R 9, R10, R11, R12, R13, R14, R15, R16, R17, adjustable resistance RP4 and capacitor C 1, C2; Earth connection again behind the end of described pulse square wave-generator IC3 serial connection adjustable resistance RP4 and the R15, the other end of adjustable resistance RP4 connects the output of input rectification circuit, and the positive input on the described pulse square wave-generator IC3 is connected gate circuit IC A-1, ICA-2 respectively with reverse input end; The positive input of described amplifier IC2-1 constitutes FM circuit input branch road with connecting together after reverse input end is connected resistance R 9 and R10 respectively, and this FM circuit input branch road is connected with the output of described modulation circuit; The positive input of described amplifier IC2-2 constitutes another branch road of FM circuit input with connecting together after reverse input end is connected resistance R 13 and R14 respectively, and another branch road of this FM circuit input is connected with the output of modulation circuit; The end of described gate circuit ICA-1, ICA-2 is connected across respectively between the positive input of amplifier IC2-1, IC2-2 and corresponding resistance R 10 thereof, the R12, earth connection again after the end of described gate circuit ICA-1 and ICA-2 is connected with each other; The output of described amplifier IC2-1, IC2-2 is serially connected with resistance R 16 and C1, resistance R 17 and C2 respectively, described resistance R 11 is connected across between the output and reverse input end thereof of amplifier IC2-1, resistance R 14 is connected across between the output and reverse input end thereof of amplifier IC2-2, the other end of described capacitor C 1 and C2 constitutes two road outputs of FM circuit respectively, and this two road output is connected with two road inputs of amplifying circuit respectively.This FM circuit is after the voltage of higher level's modulation circuit output is handled, to output to power amplification circuit respectively through two road outputs.
Described power amplification circuit is by triode T1, T2, amplifier IC2-4, resistance R 18, R19, R20 and capacitor C 3 are formed, described triode T1, the base stage of T2 connects capacitor C 1 and C2 respectively, T1, the emitter stage of T2 connects the input of high pressure amplifying circuit respectively, earth connection behind the positive input series resistor R19 of described amplifier IC2-4, its reverse input end is connected across triode T1, an end that connects resistance R 20 between the colelctor electrode of T2 again, the other end of resistance R 20 connects capacitor C 3, the other end of capacitor C 3 is connected triode T1 colelctor electrode, described resistance R 20 and capacitor C 3 link earth connections, described resistance R 19 is connected across between the output and reverse input end thereof of amplifier IC2-4, the output of described amplifier IC2-4 constitutes the output voltage negative-feedback, and is connected with R3 with described.
Described high voltage variable volt circuit is high-tension transformer B1, its input connects the emitter stage of triode T1 and T2 respectively, its output connects high pressure output rectification circuit QL1 and QL2 respectively, described QL1 output also connects capacitor C 3, the QL2 output also connects capacitor C 4, the end of described C4 constitutes the voltage negative feedback signal, and is connected with resistance R 2.
Described amplifier IC1-1, IC1-2, IC1-3, IC1-4 are the in-phase proportion summing amplifiers.
The invention has the beneficial effects as follows:
1), the present invention has independent amplitude modulation, output voltage is linear to be changed, and eliminates the chattering of former electric power output voltage, makes its output stable;
2), the present invention also has independently frequency modulation, makes things convenient for the impedance matching between power supply and the electric field;
3), power supply has voltage negative feedback, Current Negative Three-Point Capacitance effect, output is stable, reliability improves;
4) but, because amplitude modulation and Frequency Adjustable, strengthen power pulse output, strengthen the excitation and the adsorption function of electric field, improve the purification range hood detergent power;
5), this high-voltage power circuit is simple and reasonable for structure, volume is little, cost is low.
Description of drawings:
Fig. 1 is a high voltage source block diagram of the present invention
Fig. 2 is Fig. 1 high-voltage power circuit schematic diagram
Fig. 3 is a modulation circuit principle schematic among Fig. 2
Fig. 4 is a FM circuit principle schematic among Fig. 2
Fig. 5 is the power amplification circuit principle schematic of Fig. 2
The specific embodiment
As depicted in figs. 1 and 2, the high voltage source that a kind of electrostatic smoke purifier is used, comprise power supply circuits 7, input rectification circuit 1, power amplification circuit 2, high voltage variable volt circuit 3 and high pressure output rectification circuit 4 thereof, between input rectification circuit 1 and power amplification circuit 2, also have modulation circuit 5 and FM circuit 6, the setting signal input 501 of described modulation circuit 5 connects the output 101 of input rectification circuit 1, the signal output part 502 of modulation circuit 5 and two road inputs 601 of FM circuit 6,602 connect two road outputs 603 of described FM circuit 6,604 respectively with two road inputs 201 of power amplification circuit 2,202 connect.
Described modulation circuit 5 is made up of amplifier IC1-1, IC1-2, IC1-3, IC1-4, resistance R 1, R2, R3, R4, R5, R6, R7 and R8, adjustable resistance RP1, RP2, RP3, the positive input serial connection adjustable resistance RP1 of described amplifier IC1-1, resistance R 1 back are connected with input rectification circuit 1 output 101, constitute the setting signal of modulation circuit 5 output amplitudes; The positive input of described amplifier IC1-2 and adjustable resistance RP2, resistance R 2 serial connection backs connect high pressure output rectification circuit 4, constitute the voltage negative feedback signal 9 of modulation circuit 5, the positive input of described amplifier IC1-3 and adjustable resistance RP3, resistance R 3 serial connection backs are connected with power amplification circuit 2, form the Current Negative Three-Point Capacitance signal 8 of modulation circuit 5, described adjustable resistance RP1, RP2, the other end on the RP3 connects ground wire, described amplifier IC1-1, IC1-2, the output of IC1-3 is series resistor R4 respectively, R5, be connected in parallel behind the R6, positive input with described amplifier IC1-4 is connected again, described amplifier IC1-1, IC1-2, reverse input end on the IC1-3 is connected across its output and corresponding resistance R 4 thereof respectively, between R5 or the R6, be connected in series by resistance R 8 between the reverse input end of amplifier IC1-4 and the ground wire, two road inputs 601 of the output of amplifier IC1-4 and FM circuit 6,602 connect, and described resistance R 7 is connected across between the positive input and output thereof of IC1-4.
Described FM circuit 6 is made up of amplifier IC2-1, IC2-2, pulse square wave-generator IC3, gate circuit IC A-1, ICA-2, resistance R 9, R10, R11, R12, R13, R14, R15, R16, R17, adjustable resistance RP4 and capacitor C 1, C2; Earth connection again behind the end of described pulse square wave-generator IC3 serial connection adjustable resistance RP4 and the R15, the other end of adjustable resistance RP4 connects the output 101 of input rectification circuit 1, and the positive input on the described pulse square wave-generator IC3 is connected gate circuit IC A-1, ICA-2 respectively with reverse input end; The positive input of described amplifier IC2-1 constitutes FM circuit 6 input branch roads with connecting together after reverse input end is connected resistance R 9 and R10 respectively, and these FM circuit 6 input branch roads are connected with the output of described modulation circuit 5; The positive input of described amplifier IC2-2 constitutes another branch road of FM circuit 6 inputs with connecting together after reverse input end is connected resistance R 13 and R14 respectively, and another branch road of these FM circuit 6 inputs is connected with the output 502 of modulation circuit 5; The end of described gate circuit ICA-1, ICA-2 is connected across respectively between the positive input of amplifier IC2-1, IC2-2 and corresponding resistance R 10 thereof, the R12, earth connection again after the end of described gate circuit ICA-1 and ICA-2 is connected with each other; The output of described amplifier IC2-1, IC2-2 is serially connected with resistance R 16 and C1, resistance R 17 and C2 respectively, described resistance R 11 is connected across between the output and reverse input end thereof of amplifier IC2-1, resistance R 14 is connected across between the output and reverse input end thereof of amplifier IC2-2, the other end of described capacitor C 1 and C2 constitutes two road outputs 603,604 of FM circuit 6 respectively, and this two road output 603,604 is connected with two road inputs 201,202 of amplifying circuit 2 respectively.
Described power amplification circuit 2 is by triode T1, T2, amplifier IC2-4, resistance R 18, R19, R20 and capacitor C 3 are formed, described triode T1, the base stage of T2 connects capacitor C 1 and C2 respectively, T1, the emitter stage of T2 connects the input of high pressure amplifying circuit 3 respectively, earth connection behind the positive input series resistor R19 of described amplifier IC2-4, its reverse input end is connected across triode T1, an end that connects resistance R 20 between the colelctor electrode of T2 again, the other end of resistance R 20 connects capacitor C 3, the other end of capacitor C 3 is connected triode T1 colelctor electrode, described resistance R 20 and capacitor C 3 link earth connections, described resistance R 19 is connected across between the output and reverse input end thereof of amplifier IC2-4, the output of described amplifier IC2-4 constitutes the output voltage negative-feedback, and is connected with R3 with described.Described high voltage variable volt circuit 3 is high-tension transformer B1, its input connects the emitter stage of triode T1 and T2 respectively, its output connects high pressure output rectification circuit QL1 and QL2 respectively, described QL1 output also connects capacitor C 3, the QL2 output also connects capacitor C 4, the end of described C4 constitutes the voltage negative feedback signal, and is connected with resistance R 2.Described amplifier IC1-1, IC1-2, IC1-3, IC1-4 are the in-phase proportion summing amplifiers.
As shown in Figure 3, be modulation circuit 5 of the present invention, by regulating the input voltage value of input rectification circuit 1, realize adjusting to amplitude modulation circuit output end 502 voltages, and the final change high voltage source output voltage amplitude that realizes.
As shown in Figure 4, be FM circuit 6 of the present invention, in the above-mentioned FM circuit 6, change the resistance of adjustable resistance RP4, when pulse square wave-generator IC3 control end Q was high level, gate circuit ICA-1 was conducting state;
QDuring for low level, gate circuit ICA-2 is off-state.When control end Q is low level,
QDuring for high level, gate circuit ICA-1 is cut-off state, and ICA-2 is conducting state.Make its output pulse frequency, i.e. V
∑ DBe the direct current ripple, after ICA-1 or ICA-2 modulation, the direct current ripple that amplitude is adjustable is converted to two groups of frequencies of frequency adjustable towards ripple V
AAnd V
B, two group pulse amplitudes are identical, and phase place is opposite.
As shown in Figure 5, be power amplification circuit 2 of the present invention, when the A terminal voltage is V
∑ DThe time, B end input voltage is 0 level, the T1 conducting, and T2 ends.V
AThrough transformer B1 in the secondary output of boosting.When the B terminal voltage is V
∑ DThe time, A end input voltage is 0 level, the T2 conducting, and T1 ends.V
BThrough transformer B1 in the secondary output of boosting.T1, T2 take turns to work, at the secondary impulse wave that a positive and negative effect is replaced, impulse wave that has the gap of formation after the QL1 rectification of obtaining of high-tension transformer.Because field generator is a capacity load, regulate the resistance value that F promptly changes electric capacity.
The load circuit of power supply is a R-L-C transient circuit, because of a little, the current value of spike all occurs on the rise edge of pulse, and it is the several times of electric current normal value, and this peak current acts on ionized field, and it is doubly dried as if one to mean that corona intensity increases; This peak current acts on the absorption field, means that the electric field force of the little material of absorption load oil smoke increases several times.
Operation principle:
1), amplitude modulation output
Setting signal is provided by RP1, regulates RP1 and changes setting signal, promptly changes output voltage values;
Voltage negative feedback signal 9 is to obtain on the secondary low-voltage winding by high-tension transformer.This winding voltage is calculated in proportion, can reflect the high pressure winding voltage, and this ratio i.e. the turn ratio of two windings.This voltage is taken out after C4 filtering is by R2, RP2 dividing potential drop by the QL2 rectification.
Current Negative Three-Point Capacitance signal 8 obtains on the sample resistance R20 of power amplifier, and this signal is taken out after R3, RP3 dividing potential drop by the anti-phase amplification of IC2.
Above-mentioned signal must synthesize a control signal V
∑ D, be combined into by the IC1-4 homophase.
2), frequency modulation output
Application of power frequency modulation output has three purposes, and the one, reduce the volume of high-tension transformer, the 2nd, improve the efficient of power supply, the 3rd, the impedance matching ability of giving power supply and field generator.
Earlier with control signal V
∑ DBe modulated to pulse signal, this pulse signal does not change analog control signal V
∑ DThe direct current amplitude, but it is modulated to the alternate pulse signal of phase place, this conversion is by IC 2-3, IC2-4 and IC3 and IC4 implement to finish.V
∑ DBe input to IC2-3 and IC2-4 simultaneously, the two is difference amplifier, and IC3 is a pulse square wave-generator, change the level of its control end, promptly change the frequency of this circuit output square wave, the break-make of the Q end gauge tap IC circuit 4-1 of IC3, promptly control the output of IC2-3, its
QThe break-make of end gauge tap IC circuit 4-2, i.e. the output of IC2-4.As seen IC2-3 and IC2-4 take turns to work, and IC2-3 output back obtains " V
A" signal, IC2-4 output back obtains " V
B" signal." V
A" and " V
B" signal outputs to back level power amplifier.
3), power amplification circuit
Power amplification circuit is the complementary push-pull amplifying circuit, and two high power valves are operated in linear condition, respectively to analog signal " V
A" and " V
B" carry out power amplification.
Although the power output of power amplifier is bigger, and the largest tube of power tube consumption is about 1/4th of circuit peak power output, and the working power of power amplifier is the output voltage V behind the 220V rectifying and wave-filtering
EHigh-tension transformer B rises to 12KV with primary voltage, is not less than 13KV after the maximum output voltage band carries after the high-voltage rectifying filtering.
4), negative-feedback circuit
Voltage negative feedback signal 9 is taken from output voltage, and feedback signal is one of composition of control signal, and its effect is burning voltage output.
Output current is proportional to input current, so the current voltage drop of power amplifier sample resistance has reflected the variation of output current, its effect stabling current output indirectly.
With the polarity of these feedback signals conversion back with setting voltage after IC1-1, IC1-2, IC1-3 isolate, be combined into control signal V
∑ D
Claims (6)
1, the high voltage source that a kind of electrostatic smoke purifier is used, comprise input rectification circuit (1), power amplification circuit (2), high voltage variable volt circuit (3) and high pressure output rectification circuit (4) thereof, it is characterized in that: between input rectification circuit (1) and power amplification circuit (2), also have modulation circuit (5) and FM circuit (6), the setting signal input (501) of described modulation circuit (5) connects the output (8) of input rectification circuit (1), the signal output part (502) of modulation circuit (5) and two road inputs (601 of FM circuit (6), 602) connect two road outputs (603 of described FM circuit (6), 604) respectively with two road inputs (201 of power amplification circuit (2), 202) connect.
2, the high voltage source of using according to the described electrostatic smoke purifier of claim 1, it is characterized in that, described modulation circuit (5) is made up of amplifier IC1-1, IC1-2, IC1-3, IC1-4, resistance R 1, R2, R3, R4, R5, R6, R7 and R8, adjustable resistance RP1, RP2, RP3, the positive input serial connection adjustable resistance RP1 of described amplifier IC1-1, resistance R 1 back are connected with input rectification circuit output (101), constitute the setting signal of modulation circuit output amplitude; The positive input of described amplifier IC1-2 and adjustable resistance RP2, resistance R 2 serial connection backs connect high pressure output rectification circuit (4), constitute the voltage negative feedback signal (9) of modulation circuit, the positive input of described amplifier IC1-3 and adjustable resistance RP3, resistance R 3 serial connection backs are connected with power amplification circuit (2), form the Current Negative Three-Point Capacitance signal (8) of modulation circuit (5), described adjustable resistance RP1, RP2, the other end on the RP3 connects ground wire, described amplifier IC1-1, IC1-2, the output of IC1-3 is series resistor R4 respectively, R5, be connected in parallel behind the R6, positive input with described amplifier IC1-4 is connected again, described amplifier IC1-1, IC1-2, reverse input end on the IC1-3 is connected across its output and corresponding resistance R 4 thereof respectively, between R5 or the R6, be connected in series by resistance R 8 between the reverse input end of amplifier IC1-4 and the ground wire, two road inputs 601 of the output of amplifier IC1-4 and FM circuit (6), 602 connect, and described resistance R 7 is connected across between the positive input and output thereof of IC1-4.
3, the high voltage source of using according to the described electrostatic smoke purifier of claim 2, it is characterized in that described FM circuit (6) is made up of amplifier IC2-1, IC2-2, pulse square wave-generator IC3, gate circuit ICA-1, ICA-2, resistance R 9, R10, R11, R12, R13, R14, R15, R16, R17, adjustable resistance RP4 and capacitor C 1, C2; Earth connection again behind the end of described pulse square wave-generator IC3 serial connection adjustable resistance RP4 and the R15, the other end of adjustable resistance RP4 connects the output (101) of input rectification circuit (1), and the positive input on the described pulse square wave-generator IC3 is connected gate circuit ICA-1, ICA-2 respectively with reverse input end; The positive input of described amplifier IC2-1 constitutes FM circuit (6) input branch road with connecting together after reverse input end is connected resistance R 9 and R10 respectively, and this FM circuit (6) input branch road is connected with the output (502) of described modulation circuit (5); The positive input of described amplifier IC2-2 constitutes another branch road of FM circuit (6) input with connecting together after reverse input end is connected resistance R 13 and R14 respectively, and another branch road of this FM circuit (6) input is connected with the output (502) of modulation circuit (5); The end of described gate circuit ICA-1, ICA-2 is connected across respectively between the positive input of amplifier IC2-1, IC2-2 and corresponding resistance R 10 thereof, the R12, earth connection again after the end of described gate circuit ICA-1 and ICA-2 is connected with each other; The output of described amplifier IC2-1, IC2-2 is serially connected with resistance R 16 and C1, resistance R 17 and C2 respectively, described resistance R 11 is connected across between the output and reverse input end thereof of amplifier IC2-1, resistance R 14 is connected across between the output and reverse input end thereof of amplifier IC2-2, the other end of described capacitor C 1 and C2 constitutes two road outputs of FM circuit (6) respectively, and (603,6040, this two road output (603,604) is connected with two road inputs (201,202) of amplifying circuit (2) respectively.
4, the high voltage source of using according to the described electrostatic smoke purifier of claim 3, it is characterized in that, described power amplification circuit (2) is by triode T1, T2, amplifier IC2-4, resistance R 18, R19, R20 and capacitor C 3 are formed, described triode T1, the base stage of T2 connects capacitor C 1 and C2 respectively, T1, the emitter stage of T2 connects the input of high pressure amplifying circuit (2) respectively, earth connection behind the positive input series resistor R19 of described amplifier IC2-4, its reverse input end is connected across triode T1, an end that connects resistance R 20 between the colelctor electrode of T2 again, the other end of resistance R 20 connects capacitor C 3, the other end of capacitor C 3 is connected triode T1 colelctor electrode, described resistance R 20 and capacitor C 3 link earth connections, described resistance R 19 is connected across between the output and reverse input end thereof of amplifier IC2-4, the output of described amplifier IC2-4 constitutes the output voltage negative-feedback, and is connected with R3 with described.
5, the high voltage source of using according to claim 2 or 3 described static fume machines, it is characterized in that, described high voltage variable volt circuit (3) is high-tension transformer B1, its input connects the emitter stage of triode T1 and T2 respectively, its output connects high pressure output rectification circuit QL1 and QL2 respectively, and described QL1 output also connects capacitor C 3, and the QL2 output also connects capacitor C 4, the end of described C4 constitutes the voltage negative feedback signal, and is connected with resistance R 2.
6, the high voltage source of using according to the described static fume machine of claim 2 is characterized in that, described amplifier IC1-1, IC1-2, IC1-3, IC1-4 are the in-phase proportion summing amplifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027708 CN1712139A (en) | 2004-06-21 | 2004-06-21 | High-voltage power supply of electrostatic cooker hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027708 CN1712139A (en) | 2004-06-21 | 2004-06-21 | High-voltage power supply of electrostatic cooker hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1712139A true CN1712139A (en) | 2005-12-28 |
Family
ID=35718041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410027708 Pending CN1712139A (en) | 2004-06-21 | 2004-06-21 | High-voltage power supply of electrostatic cooker hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1712139A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269259A (en) * | 2015-06-29 | 2017-01-04 | 通用电器技术有限公司 | For calculating method and the electrostatic precipitator of the pulse firing pattern of the transformator of electrostatic precipitator |
| CN108607689A (en) * | 2018-04-24 | 2018-10-02 | 江苏凯西电气设备科技有限公司 | A kind of equipment for purifying oil-fume high-voltage power supply special based on voltage-multiplying circuit technology |
| CN109899342A (en) * | 2019-03-28 | 2019-06-18 | 中国石油大学(华东) | A kind of hydraulic safe early warning system |
-
2004
- 2004-06-21 CN CN 200410027708 patent/CN1712139A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269259A (en) * | 2015-06-29 | 2017-01-04 | 通用电器技术有限公司 | For calculating method and the electrostatic precipitator of the pulse firing pattern of the transformator of electrostatic precipitator |
| CN106269259B (en) * | 2015-06-29 | 2020-08-11 | 通用电器技术有限公司 | Method for calculating the pulse ignition pattern of a transformer of an electrostatic precipitator and electrostatic precipitator |
| CN108607689A (en) * | 2018-04-24 | 2018-10-02 | 江苏凯西电气设备科技有限公司 | A kind of equipment for purifying oil-fume high-voltage power supply special based on voltage-multiplying circuit technology |
| CN109899342A (en) * | 2019-03-28 | 2019-06-18 | 中国石油大学(华东) | A kind of hydraulic safe early warning system |
| CN109899342B (en) * | 2019-03-28 | 2024-04-12 | 中国石油大学(华东) | Hydraulic safety early warning system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1101618C (en) | Pulse voltage series circuit for producing electric medium block discharge | |
| CN1048380C (en) | Circuit arrangement | |
| CN1310645A (en) | A method of operating an electrostatic precipitator | |
| CN1234142A (en) | AC/DC converter | |
| CN2840508Y (en) | High frequency high voltage DC power supply for electric dust-cleaner | |
| CN1293885A (en) | Electronic lamp ballast with power fractor correction | |
| CN1914789A (en) | Motor drive control circuit, and motor apparatus using the same | |
| CN102500468B (en) | A kind of electrostatic precipitator high pressure intermediate frequency power supply and method of supplying power to thereof | |
| CN1128429A (en) | Current passing frequenc converter with additional output circuit | |
| CN1712139A (en) | High-voltage power supply of electrostatic cooker hood | |
| CN2706235Y (en) | High voltage power source for electrostatic oil frame purifying machine | |
| CN2904463Y (en) | AC power regulating switch | |
| CN1719712A (en) | Power conversion apparatus | |
| CN1120561C (en) | Mixed bridge-type zero-voltage and zero-current switch three level DC converter | |
| CN207426992U (en) | A kind of Sofe Switch isolated inverter of quick response | |
| CN2636497Y (en) | Self-excited push-pull type transducer | |
| CN1623272A (en) | Ac-dc converter with low ripple output | |
| CN201550024U (en) | Double transistor forward high voltage DC electricity getting unit with neutral points | |
| US20200316612A1 (en) | High-Voltage Power Supply System | |
| CN216981781U (en) | Totem-pole PFC analog control circuit, controller, AC-DC converter and charging pile | |
| CN108809130A (en) | The modulator approach of the sources Semi-Z single-phase inverter | |
| CN100464484C (en) | Pre-correcting power for power factor | |
| CN1658504A (en) | Method for obtaining silicon controlled zero cross synchonous sigual and trigger control | |
| CN208813004U (en) | A kind of charging circuit for automobile | |
| CN2596662Y (en) | Switcher for changing DC into AC |
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: 20051228 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |