CN2161988Y - AC contactor electricity-saving device - Google Patents
AC contactor electricity-saving device Download PDFInfo
- Publication number
- CN2161988Y CN2161988Y CN 93211430 CN93211430U CN2161988Y CN 2161988 Y CN2161988 Y CN 2161988Y CN 93211430 CN93211430 CN 93211430 CN 93211430 U CN93211430 U CN 93211430U CN 2161988 Y CN2161988 Y CN 2161988Y
- Authority
- CN
- China
- Prior art keywords
- contactor
- circuit
- utility
- model
- voltage
- 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 - Fee Related
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Abstract
The utility model relates to a power-saving device for an AC contactor. In the utility model, the attracting circuit of an AC contactor adopts a controlled silicon which is used for triggering conduction and voltage reduction rectification to provide for the attracting voltage of the AC contactor, the holding circuit of the AC contactor adopts capacitor electricity-limiting voltage reduction and bridge rectification, and a resistor and a capacitor which are connected in series with the control electrode of the controlled silicon are used for the conversion of attracting voltage and holding voltage. The utility model make the AC contactor have small volume and simple circuit and save power; besides, the original inductance load is changed into a capacitive load, so the power factor of the circuit of the utility model is improved.
Description
The utility model belongs to low-voltage electrical apparatus, is a kind of A.C. contactor electricity-saving appliance of A.C. contactor direct current adhesive operation.
At present known A.C. contactor DC operation economize on electricity, be to supply with contactor coil after with 380 volts of alternating current step-down rectifiers by transformer and miniature relay, because the existence of transformer and relay, make the A.C. contactor volume big, complex circuit, and transformer and relay have certain electrical loss.
The purpose of this utility model provides that a kind of volume is little, circuit is simple, the significant A.C. contactor electricity-saving appliance of power savings.
The technical scheme that realizes the utility model purpose is, the attraction circuit of A.C. contactor adopts the silicon controlled control utmost point to connect with resistance, electric capacity and diode, the control utmost point triggers controllable silicon conducting step-down rectifier after the energized, to supply with the pick-up voltage of the contactor of connecting with controllable silicon; Holding circuit adopts capacitor ration the power supply step-down and bridge rectifier; Resistance of connecting with the SCR control utmost point and electric capacity are formed the conversion of adhesive and sustaining voltage, and the A.C. contactor volume is little, circuit simple, the purpose of economize on electricity thereby reach.
Owing to adopt such scheme, removed step-down transformer, dropping resistor and miniature relay reduce volume, circuit is simpler, is convenient to install, and has reduced consuming components, so power savings is remarkable, the utility model becomes capacity load with inductive load, so improved the power factor of circuit.
Accompanying drawing is an electrical schematic diagram of the present utility model.
The utility model is described in further detail below in conjunction with accompanying drawing.
The control utmost point of controllable silicon SCR and diode D in the accompanying drawing
1, capacitor C
1And resistance R
2Series connection is in capacitor C
1On be parallel with discharge resistance R
1, controllable silicon SCR and contactor coil J are composed in series the attraction circuit of contactor; By capacitor C
2Ration the power supply and fall electricity and diode D
3～D
6In the bridge rectifier of forming as the holding circuit of contactor; Its course of work is that after connecting AC power, electric current is through diode D
1, capacitor C
1, resistance R
2To the control utmost point of controllable silicon SCR, trigger the controllable silicon SCR conducting, this moment, capacitor C was worked as in the contactor adhesive
1When voltage was charged to certain numerical value, controllable silicon SCR control utmost point no current flow through and controllable silicon SCR is ended, and this moment, contactor coil J was by capacitor C
1With diode D
3～D
6The current limliting bridge rectifier step-down line powering of forming, resistance R
1Be capacitor C
1Discharge resistance.
Claims (2)
1, a kind of A.C. contactor electricity-saving appliance is characterized in that the control utmost point and the diode (D of controllable silicon (SCR)
1), electric capacity (C
1), resistance (R
2) series connection, controllable silicon (SCR) is composed in series attraction circuit with contactor coil (J); Electric capacity (C
2) and by diode (D
3～D
6) bridge rectifier formed is the holding circuit of contactor coil (J).
2, A.C. contactor electricity-saving appliance as claimed in claim 1 is characterized in that said electric capacity (C
1) on be parallel with discharge resistance (R
1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93211430 CN2161988Y (en) | 1993-04-30 | 1993-04-30 | AC contactor electricity-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93211430 CN2161988Y (en) | 1993-04-30 | 1993-04-30 | AC contactor electricity-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2161988Y true CN2161988Y (en) | 1994-04-13 |
Family
ID=33793055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93211430 Expired - Fee Related CN2161988Y (en) | 1993-04-30 | 1993-04-30 | AC contactor electricity-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2161988Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859795B (en) * | 2009-04-13 | 2011-11-16 | 世界先进积体电路股份有限公司 | Semiconductor device |
-
1993
- 1993-04-30 CN CN 93211430 patent/CN2161988Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859795B (en) * | 2009-04-13 | 2011-11-16 | 世界先进积体电路股份有限公司 | Semiconductor device |
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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 |