CN202334343U - Power circuit of motor protector device - Google Patents
Power circuit of motor protector device Download PDFInfo
- Publication number
- CN202334343U CN202334343U CN2011205334180U CN201120533418U CN202334343U CN 202334343 U CN202334343 U CN 202334343U CN 2011205334180 U CN2011205334180 U CN 2011205334180U CN 201120533418 U CN201120533418 U CN 201120533418U CN 202334343 U CN202334343 U CN 202334343U
- Authority
- CN
- China
- Prior art keywords
- input end
- power circuit
- full
- wave rectification
- motor protector
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a power circuit of a motor protector device. One alternating-current input end of the power circuit is connected with one alternating-current input end of the first full-wave rectifier bridge of a plurality of full-wave rectifier bridges in series with the alternating-current input end through a resistance-capacitance step-down unit, one alternating-current input end of the last full-wave rectifier bridge is connected with the other alternating-current input end of the power circuit through a current-limiting resistor, and the direct-current output end of each full-wave rectifier bridge is connected with a voltage stabilizing tube and a filter capacitor in parallel. Compared with the conventional power circuit, multiple groups of power supplies can be output, the power is higher, and the load capacity is also higher.
Description
Technical field
The utility model relates to a kind of power circuit of motor protector.
Background technology
A kind of conventional way that converts alternating current into low-voltage direct is after adopting the transformer step-down, rectification again, filtering and voltage stabilizing.When receiving volume, cost and during to the restriction of the citations such as requirement of alternating current input power supplying; The most simple and practical method adopts the capacitor step-down circuit exactly, and its operation principle is that the capacitive reactance that utilizes electric capacity under certain AC signal frequency, to produce comes the restraint of labour flow.Bleeder resistance in the circuit and decompression capacitor and connect after; Anti-and connect a diode between its output and ground; This diode is that decompression capacitor provides discharge loop at the negative half period that exchanges input, and the defective of sort circuit is: the negative half period power that exchanges input has been wasted in (1); (2) this power circuit load capacity is poor.
Summary of the invention
The purpose of the utility model is to overcome the defective of prior art, provides a kind of power high, and load capacity is stronger, the power circuit of the novel motor protector of exportable multi-group power.
For realizing above-mentioned purpose; The utility model adopts a kind of power circuit of motor protector; An ac input end of described power circuit is received the ac input end of first full-wave rectification bridge of a plurality of full-wave rectification bridges of ac input end series connection through resistance-capacitance depressurization formula unit; An ac input end of last full-wave rectification bridge is received another ac input end of power circuit through current-limiting resistance, and the dc output end of each full-wave rectification bridge is voltage-stabiliser tube of parallel connection and filter capacitor all.
The utility model further is set to, and described full-wave rectification bridge BR1 and each output of BR2 ac input end series connection back are parallel with C2 and ZD1 respectively, C3 and ZD2.
The utility model further is set to again, and after described full-wave rectification bridge BR1, BR2 and the series connection of BR3 ac input end, each dc output end is parallel with C2 and ZD1, C3 and ZD2, C4 and ZD3 respectively.
Through adopting above-mentioned technical scheme, the utility model provides a kind of power higher, and load capacity is stronger, the power circuit of the motor protector of exportable multi-group power.
Description of drawings:
Fig. 1 is the schematic diagram of the power circuit of the utility model motor protector;
Embodiment:
As shown in Figure 1; Be a kind of embodiment of the utility model; The utility model provides a kind of power circuit of motor protector; An ac input end of described power circuit is received the ac input end of first full-wave rectification bridge of a plurality of full-wave rectification bridges of ac input end series connection through resistance-capacitance depressurization formula unit; An ac input end of last full-wave rectification bridge is received another ac input end of power circuit through current-limiting resistance, and the dc output end of each full-wave rectification bridge is voltage-stabiliser tube of parallel connection and filter capacitor all.
After described full-wave rectification bridge BR1 and the series connection of BR2 ac input end, each output is parallel with C2 and ZD1 respectively, C3 and ZD2.
After described full-wave rectification bridge BR1, BR2 and the series connection of BR3 ac input end, each dc output end is parallel with C2 and ZD1, C3 and ZD2, C4 and ZD3 respectively.
Claims (3)
1. the power circuit of a motor protector; It is characterized in that: an ac input end of described power circuit is received the ac input end of first full-wave rectification bridge of a plurality of full-wave rectification bridges of ac input end series connection through resistance-capacitance depressurization formula unit; An ac input end of last full-wave rectification bridge is received another ac input end of power circuit through current-limiting resistance, and the dc output end of each full-wave rectification bridge is voltage-stabiliser tube of parallel connection and filter capacitor all.
2. the power circuit of motor protector according to claim 1 is characterized in that: after described full-wave rectification bridge BR1 and the series connection of BR2 ac input end, each output is parallel with C2 and ZD1 respectively, C3 and ZD2.
3. the power circuit of motor protector according to claim 1 is characterized in that: after described full-wave rectification bridge BR1, BR2 and the series connection of BR3 ac input end, each dc output end is parallel with C2 and ZD1, C3 and ZD2, C4 and ZD3 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205334180U CN202334343U (en) | 2011-12-01 | 2011-12-01 | Power circuit of motor protector device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205334180U CN202334343U (en) | 2011-12-01 | 2011-12-01 | Power circuit of motor protector device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334343U true CN202334343U (en) | 2012-07-11 |
Family
ID=46446308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205334180U Expired - Lifetime CN202334343U (en) | 2011-12-01 | 2011-12-01 | Power circuit of motor protector device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334343U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475090A (en) * | 2016-06-14 | 2019-03-15 | 新能源和替代技术股份有限公司 | Drive circuit with multiple rectifiers |
-
2011
- 2011-12-01 CN CN2011205334180U patent/CN202334343U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475090A (en) * | 2016-06-14 | 2019-03-15 | 新能源和替代技术股份有限公司 | Drive circuit with multiple rectifiers |
| CN109475090B (en) * | 2016-06-14 | 2022-01-28 | 新能源和替代技术股份有限公司 | Driver circuit with multiple rectifiers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |