CN2371723Y - High-voltage dc power supply of non-transformer for small duster - Google Patents
High-voltage dc power supply of non-transformer for small duster Download PDFInfo
- Publication number
- CN2371723Y CN2371723Y CN 99209134 CN99209134U CN2371723Y CN 2371723 Y CN2371723 Y CN 2371723Y CN 99209134 CN99209134 CN 99209134 CN 99209134 U CN99209134 U CN 99209134U CN 2371723 Y CN2371723 Y CN 2371723Y
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- power supply
- voltage
- transformer
- circuit
- current
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Abstract
The utility model relates to a high-voltage DC power supply of a non-power transformer for a small dust remover. After the current of power frequency voltage is limited by a current limiting circuit, the power frequency voltage is directly transmitted to a bridge rectifier filter circuit, and is coupled to a step-up transformer after oscillated to start oscillation to achieve ultrasonic frequency by an oscillation circuit; ultrasonic wave voltage after the voltage boosting is transmitted to a load after the bridge rectification. The power supply has the advantages of few used elements, low cost and low power consumption and has a function of higher-order harmonic elimination, and accordingly, an electric communication device can not be disturbed; as the utility model can emit large quantity of negative ions and ozone, the utility model can be widely used for electrostatic dust removing, electrostatic impurity separation, air purification, indoor cleaning, sterilization, etc.
Description
The utility model relates to a kind of power supply that is used for electrostatic precipitation, particularly a kind of high-voltage DC power supply that is used for the no power supply transformer of small-sized deduster.
Electrostatic precipitation used many years, adopted but generally be large-scale dust cleaning apparatus, and its major loop is generally: the power-frequency voltage of 50HZ, go to control rectification by controllable silicon.But because of the cost of this mode is very high,, can cause very big fund waste, be unfavorable for the popularization of small-sized deduster if be used for small-sized deduster.
For reducing the cost of small-sized deduster, to be convenient to popularize, the utility model discloses a kind of high-voltage DC power supply that can be used for the no power supply transformer of small-sized deduster, and used element is few, and is common, so cost is extremely low.
The technical scheme that the utility model adopted is:
Power-frequency voltage is after a capacitance current-limiting circuit current limliting, output to bridge rectifier and carry out rectification, direct current after the rectification becomes desirable direct current through filtering, output to starting of oscillation in the oscillating circuit, to produce the signal of ultrasonic frequency, the ultrasonic wave voltage of this signal after being capacitively coupled on the step-up transformer, boosting is sent into load after the rectification circuit rectification.
In current-limiting circuit, also have two inductance to be connected on respectively between current-limiting circuit and the bridge rectifier.Oscillating circuit is the LC series resonant circuit, between the base stage of triode and emitter, connecting an inductance and an electric capacity, the external coupling capacitance of the collector electrode of triode, emitter joins by the primary winding of a feedback inductance and step-up transformer, also is serially connected with diode and resistance between transistor base and emitter.In addition, also have an operating state indicating circuit, be made up of RC oscillating circuit and light-emitting diode, light-emitting diode is connected on the output loop of oscillating circuit.
Because having adopted technique scheme, load of the present utility model is capacitive load, can reduce the reactive power of electrical network.It is little to have power consumption, and cost is low, can not disturb the advantage of other electric equipments.
Below in conjunction with accompanying drawing the utility model being done one describes in detail:
Fig. 1 is a line map of the present utility model;
Fig. 2 is a block diagram of the present utility model.
As shown in Figure 2, power-frequency voltage outputs to by D after a capacitance current-limiting circuit current limliting
1, D
2, D
3, D
4The bridge rectifier of forming carries out the rectification (see figure 1), and the direct current after the rectification is through filter capacitor C
4Become desirable direct current, output to starting of oscillation in the oscillating circuit, produce the signal of ultrasonic frequency, the ultrasonic wave voltage of this signal after being capacitively coupled on the step-up transformer, boosting is sent into load after another bridge rectifier rectification.As can be seen from Figure 2, removing in the current-limiting circuit can be according to the capacitor C of the big or small different capabilities gear of selecting of load
1, C
2, C
3Also have two inductance L outward,
4, L
5Be connected on respectively between current-limiting circuit and the bridge rectifier, these two inductance are two coils in a magnet ring, in order to block hyperacoustic leaking.Oscillating circuit is two LC series resonant circuits of alternation, at triode BG
1, BG
2Base stage and emitter between the inductance L of connecting respectively
1, capacitor C
5And inductance L
2, capacitor C
6, while diode D
5And resistance R
3Be connected to BG after the series connection
1Base stage and emitter between, resistance R
4, diode D
6Be connected to triode BG after the series connection
2Base stage and emitter between, the effect of diode and resistance is the normal starting of oscillation of keeping oscillating circuit.Triode BG
1The external coupling capacitance C of collector electrode
7, emitter is by a feedback inductance L
3Primary winding L with transformer
6Join.Signal is by L after the filtering
3The input inductance L of oscillating circuit is given in positive feedback
1, L
2Thereby, the oscillator signal of generation ultrasonic frequency, wherein L
1, L
2, L
3Be coil at a ferrite magnetic in-core.The signal of the ultrasonic frequency that the vibration back produces is through capacitor C
7Be coupled to the primary winding of transformer, after step-up transformer boosts, output in the load after being input to the rectification circuit rectification again, the rectification circuit here can the apparent load size and select bridge-type, half-wave or voltage multiplying rectifier mode.Also have an operating state indicating circuit in addition, be made up of RC oscillating circuit and light-emitting diode DF, light-emitting diode DF is connected on the output loop of oscillating circuit, and the signal of telecommunication is through the auxiliary winding L of step-up transformer
7Transform to another group primary winding L
8On, triode BG like this
3, BG
4Alternate conduction, then light-emitting diode DF glistens when deduster is worked, and diode BG
4By the time at L
7Two ends are higher than the pulse of former dedusting voltage with generation, and this small-pulse effect is favourable to raising the efficiency.
Claims (4)
1, a kind of high-voltage DC power supply that is used for the no power supply transformer of small-sized deduster, it is characterized in that: power-frequency voltage is after a capacitance current-limiting circuit current limliting, output to bridge rectifier and carry out rectification, direct current after the rectification becomes desirable direct current through filtering, output to starting of oscillation in the oscillating circuit, to produce the signal of ultrasonic frequency, the ultrasonic wave voltage of this signal after being capacitively coupled on the step-up transformer, boosting is sent into load after the rectification circuit rectification.
2, a kind of high-voltage DC power supply that is used for the no power supply transformer of small-sized deduster according to claim 1 is characterized in that: also have two inductance in current-limiting circuit, be connected on respectively between current-limiting circuit and the bridge rectifier.
3, a kind of high-voltage DC power supply that is used for the no power supply transformer of small-sized deduster according to claim 1 and 2, it is characterized in that: oscillating circuit is the LC series resonant circuit, between the base stage of triode and emitter, connecting an inductance and an electric capacity, the external coupling capacitance of the collector electrode of triode, emitter joins by the primary winding of a feedback inductance and step-up transformer.
4, a kind of high-voltage DC power supply that is used for the no power supply transformer of small-sized deduster according to claim 3, it is characterized in that: also have an operating state indicating circuit, be made up of RC oscillating circuit and light-emitting diode, light-emitting diode is connected on the output loop of oscillating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99209134 CN2371723Y (en) | 1999-04-23 | 1999-04-23 | High-voltage dc power supply of non-transformer for small duster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99209134 CN2371723Y (en) | 1999-04-23 | 1999-04-23 | High-voltage dc power supply of non-transformer for small duster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2371723Y true CN2371723Y (en) | 2000-03-29 |
Family
ID=34002756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99209134 Expired - Fee Related CN2371723Y (en) | 1999-04-23 | 1999-04-23 | High-voltage dc power supply of non-transformer for small duster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2371723Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245110A (en) * | 2015-11-10 | 2016-01-13 | 潘秀兰 | DC boost circuit |
| CN105262341A (en) * | 2015-11-10 | 2016-01-20 | 潘秀兰 | A voltage converting circuit for direct currents |
| CN106500051A (en) * | 2016-12-21 | 2017-03-15 | 山东众志电子有限公司 | A kind of for purification of air and monitoring vehicle flowrate street lamp |
-
1999
- 1999-04-23 CN CN 99209134 patent/CN2371723Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245110A (en) * | 2015-11-10 | 2016-01-13 | 潘秀兰 | DC boost circuit |
| CN105262341A (en) * | 2015-11-10 | 2016-01-20 | 潘秀兰 | A voltage converting circuit for direct currents |
| CN106500051A (en) * | 2016-12-21 | 2017-03-15 | 山东众志电子有限公司 | A kind of for purification of air and monitoring vehicle flowrate street lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |