CN2343710Y - Adjustable voltage-stabilized source - Google Patents
Adjustable voltage-stabilized source Download PDFInfo
- Publication number
- CN2343710Y CN2343710Y CN 98229330 CN98229330U CN2343710Y CN 2343710 Y CN2343710 Y CN 2343710Y CN 98229330 CN98229330 CN 98229330 CN 98229330 U CN98229330 U CN 98229330U CN 2343710 Y CN2343710 Y CN 2343710Y
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- CN
- China
- Prior art keywords
- voltage
- power supply
- circuit
- adjustable voltage
- positive
- 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 an adjustable voltage-stabilized source which can be used for miniature electronic product power supply and household electrical appliance internal power supply. A source voltage reducing circuit of the adjustable voltage-stabilized source is composed of rectification bridges which are connected in parallel, diodes which are connected in series, and a filter capacitor, a transformer is not used as core element of the adjustable voltage-stabilized source, and thereby, influence on the quality of the adjustable voltage-stabilized source, which is caused by the quality of the transformer, is eliminated, and the quality of the adjustable voltage-stabilized source is greatly enhanced.
Description
The utility model relates to a kind of adjustable stabilized voltage supply that is used for power supply of miniature electronic product and household electrical appliance in-line power.
The power supply of various small-sized regulated power supply of Chu Shouing and household appliances in-line power in the market, one transformer is all arranged in the circuit of its power supply inside, transformer is made secondary tap dividing potential drop, to realize the step-down of 220V alternating voltage is obtained the voltage of various required pressure values.This kind power supply is because the core component of its circuit is a transformer, in use, the time regular meeting take place because transformer is burnt out the situation that causes power supply to become waste product, so direct inner with it the transformer quality of the quality of power quality is good and bad closely related.
The purpose of this utility model provides the transformerless adjustable stabilized voltage supply of a kind of internal circuit, thereby makes the quality of adjustable stabilized voltage supply not be subjected to the influence of transformer quality good or not.
Adjustable stabilized voltage supply described in the utility model comprises the voltage step-down circuit and the light emitting diode lamp circuit of outer casing of power supply and enclosure, the power supply reduction voltage circuit is made of rectification bridge circuit, diode in series and a filter capacitor of parallel connection, wherein each rectifier bridge route one electric capacity with insert a bridge rectifier after a resistance is in parallel and constitute, the positive voltage of rectification bridge circuit output and positive voltage, negative voltage are in parallel with negative voltage; The positive and negative end of diode in series is connected with the positive and negative end of power supply after the rectification respectively.
The utility model is owing to cancelled power transformer, do not need transformer to make secondary tap dividing potential drop, but directly make the step-down voltage division processing with diode, the performance of its circuit is better than having the power of transformer circuit, the parameter of circuit and quality are not subjected to the influence of any inductance element iron core permeability and core area weight, and cast coil because of not being subjected to transformer the useful life of adjustable stabilized voltage supply, the influence of line footpath and coil winding fabrication error and be able to very big raising, also fundamentally got rid of the electromagnetic wave that transformer produced the dried of intermediate frequency electrical equipment scratched, and the energy consumption that produced of transformer heating.
Now in conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1 is the circuit theory diagrams of a kind of particular circuit configurations of adjustable stabilized voltage supply described in the utility model.
The circuit structure that with the voltage output value is 12V, 9V, 7V, 6V, 4.5V, 3V, seven class of 1.5V is an example.As shown in Figure 1, this circuit comprises power supply reduction voltage circuit and light emitting diode lamp circuit, and the power supply reduction voltage circuit is by rectification bridge circuit 1C1,1R1,1D1-4 and the 2C of two parallel connections
1, 2R
1, 2D
1-4With 18 diode in series (407 type) D
1-D
18And filter capacitor C
3(4700uF/16V) constitute, wherein rectification bridge circuit 1C
1, 1R
1, 1D
1-4By capacitor 1C
1(4.7UF/250V) with resistance 1R
1(2W/500K) bridge rectifier 1D is inserted in back in parallel
1-4(407 type rectifier diode) constitutes, another rectification bridge circuit 2C
1, 2R
1, 2D
1-4By capacitor 2C
1(4.7UF/250V) with resistance 2R
1(2W/500K) bridge rectifier 2D is inserted in back in parallel
1-4(407 type rectifier diode) constitutes, and the positive voltage of two rectification bridge circuit outputs and positive voltage, negative voltage are in parallel with negative voltage; 18 diode D of series connection
1-D
18The positive and negative end of (407 type) is connected with the positive and negative end of power supply after the rectification respectively; Filter capacitor C
3Be connected between the positive and negative terminal of rectification bridge circuit.The voltage of rectification this moment bridge circuit is about 12V, from D
1-D
18Negative power end begins, and can take out following seven groups of magnitudes of voltage: at D
2, D
3Between can obtain magnitude of voltage 1.5V, D
4, D
5Between can obtain magnitude of voltage 3V, D
6, D
7Between can obtain magnitude of voltage 4.5V, D
8, D
9Between can obtain magnitude of voltage 6V, D
9, D
10Between can obtain magnitude of voltage 7V, D
14, D
15Between can obtain magnitude of voltage 9V, at D
18Anode can obtain magnitude of voltage 12V.During use, after the energized, difference Closing Switch K
1, K
2, K
3, K
4, K
5, K
6, K
7, then the output at power supply obtains corresponding voltage value 1.5V, 3V, 4.5V, 6V, 7V, 9V, 12V respectively, and its corresponding lumination of light emitting diode indication.
Claims (1)
- A kind of adjustable stabilized voltage supply, the power supply reduction voltage circuit and the light emitting diode lamp circuit that comprise outer casing of power supply and enclosure, it is characterized in that this power supply reduction voltage circuit is made of rectification bridge circuit, diode in series and a filter capacitor of parallel connection, wherein each rectifier bridge route one electric capacity with insert bridge rectifier after a resistance is in parallel and constitute, the positive voltage of rectification bridge circuit output and positive voltage, negative voltage are in parallel with negative voltage; The positive and negative end of diode in series is connected with the positive and negative end of power supply after the rectification respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98229330 CN2343710Y (en) | 1998-08-14 | 1998-08-14 | Adjustable voltage-stabilized source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98229330 CN2343710Y (en) | 1998-08-14 | 1998-08-14 | Adjustable voltage-stabilized source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2343710Y true CN2343710Y (en) | 1999-10-13 |
Family
ID=33979238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98229330 Expired - Fee Related CN2343710Y (en) | 1998-08-14 | 1998-08-14 | Adjustable voltage-stabilized source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2343710Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009127079A1 (en) * | 2008-04-16 | 2009-10-22 | 海立尔股份有限公司 | Parallel bridge and high-voltage parallel bridge circuit construction |
-
1998
- 1998-08-14 CN CN 98229330 patent/CN2343710Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009127079A1 (en) * | 2008-04-16 | 2009-10-22 | 海立尔股份有限公司 | Parallel bridge and high-voltage parallel bridge circuit construction |
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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 |