CN202696492U - Adjustable DC stabilized power supply - Google Patents
Adjustable DC stabilized power supply Download PDFInfo
- Publication number
- CN202696492U CN202696492U CN 201220353537 CN201220353537U CN202696492U CN 202696492 U CN202696492 U CN 202696492U CN 201220353537 CN201220353537 CN 201220353537 CN 201220353537 U CN201220353537 U CN 201220353537U CN 202696492 U CN202696492 U CN 202696492U
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- diode
- resistance
- electric capacity
- adjustable
- negative pole
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Abstract
The utility model provides an adjustable DC stabilized power supply; a positive pole of a second diode is connected with a negative pole of a first diode; a negative pole of the second diode is connected with a first pin of an integrated voltage stabilizer; one end of a third capacitor is connected with the negative pole of the first diode; the other end of the third capacitor is connected with a positive pole of a third diode; a negative pole of the third diode is connected with a positive pole of a fourth diode; a negative pole of the fourth diode is grounded; a second resistor is connected with the third capacitor in parallel; a fourth capacitor is connected with a first capacitor in parallel; one end of a third resistor is connected with the first pin of the integrated voltage stabilizer; and the other end of the third resistor is connected with the positive pole of the third diode. The adjustable DC stabilized power supply is simple in structure, and has the advantages of short circuit protection and adjustable voltage. A rectifier circuit is low in internal resistance and less in loss; and the output DC voltage is not influenced by the voltage fluctuation of a power grid and the change of a load resistor, so that the stability which is high enough can be obtained.
Description
Technical field
The utility model relates to a kind of adjustable D. C regulated, belongs to the stabilized voltage power supply technical field.
Background technology
The single phase bridge type rectifier circu that existing D.C. regulated power supply adopts is compared with half-wave rectifying circuit, under identical transformer secondary voltage, parameter request to diode is the same, its major defect is that the quantity of required diode is many, because in fact the forward resistance of diode is non-vanishing, inevitable so that the rectification circuit internal resistance is larger, loss is also just larger.In addition, current rectifying and wave filtering circuit can be transformed to sinusoidal voltage comparatively level and smooth direct voltage, still, on the one hand, because output voltage average value depends on transformer secondary voltage effective value, so when voltage ripple of power network, output voltage average value will produce corresponding fluctuation thereupon; On the other hand, because the existence of current rectifying and wave filtering circuit internal resistance, when load variations, the voltage in the internal resistance will produce opposite variation, so output voltage average value also will produce opposite variation thereupon.Therefore, the current rectifying and wave filtering circuit output voltage can fluctuate along with the fluctuation of line voltage, changes along with the variation of load resistance, and the dc voltage stability that obtains is good not.
Summary of the invention
The purpose of this utility model is to compare with half-wave rectifying circuit for the single phase bridge type rectifier circu that solves existing D.C. regulated power supply employing, and inevitable so that the rectification circuit internal resistance is larger because in fact the forward resistance of diode is non-vanishing, loss is also just larger; Because the existence of current rectifying and wave filtering circuit internal resistance, when load variations, the voltage in the internal resistance will produce opposite variation, the imperfect problem of the dc voltage stability that obtains, and then a kind of adjustable D. C regulated is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of adjustable D. C regulated, comprise: power transformer, rectifier, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the first diode, the second diode, the 3rd diode, the 4th diode, potentiometer and integrated regulator, the output of described power transformer is connected with tripod with the crus secunda of rectifier respectively, the 4th pin ground connection of rectifier, the first pin of rectifier is connected with the first pin of integrated regulator, one end of the first electric capacity is connected with the first pin of rectifier, the other end ground connection of the first electric capacity, one end of the first resistance is connected with the tripod of integrated regulator, the other end of the first resistance is connected with an end of the second electric capacity, the other end ground connection of the second electric capacity, the movable end of potentiometer is connected with the crus secunda of integrated regulator, the stiff end ground connection of potentiometer, the negative pole of the first diode is connected with the tripod of integrated regulator, the positive pole of the first diode is connected with the first resistance and tie point of the second electric capacity and the crus secunda of integrated regulator respectively, the positive pole of the second diode is connected with the negative pole of the first diode, the negative pole of the second diode is connected with the first pin of integrated regulator, one end of the 3rd electric capacity is connected with the negative pole of the first diode, the other end of the 3rd electric capacity is connected with the positive pole of the 3rd diode, the negative pole of the 3rd diode is connected with the positive pole of the 4th diode, the minus earth of the 4th diode, the second resistance is connected with the 3rd Capacitance parallel connection, the 4th electric capacity is connected with the first Capacitance parallel connection, one end of the 3rd resistance is connected with the first pin of integrated regulator, and the other end of the 3rd resistance is connected with the positive pole of the 3rd diode.
The utility model is simple in structure, has short-circuit protection, advantage that voltage is adjustable.The rectification circuit internal resistance is little, and loss is also just smaller; The impact that output dc voltage is not changed by voltage ripple of power network and load resistance can obtain sufficiently high stability.
Description of drawings
Fig. 1 is the overall structure schematic diagram of a kind of adjustable D. C regulated of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail: present embodiment is implemented under take technical solutions of the utility model as prerequisite, has provided detailed execution mode, but protection range of the present utility model is not limited to following embodiment.
As shown in Figure 1, a kind of adjustable D. C regulated that present embodiment is related, comprise: power transformer T1, rectifier D1, the first resistance R 1, the second resistance R 3, the 3rd resistance R 4, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the first diode D2, the second diode D3, the 3rd diode D4, the 4th diode D5, potentiometer R2 and integrated regulator U1, the input of described power transformer T1 is connected with AC power V1, the output of power transformer T1 is connected with tripod 3 with the crus secunda 2 of rectifier D1 respectively, the 4th pin 4 ground connection of rectifier D1, the first pin 1 of rectifier D1 is connected with the first pin 1 of integrated regulator U1, one end of the first capacitor C 1 is connected with the first pin 1 of rectifier D1, the other end ground connection of the first capacitor C 1, one end of the first resistance R 1 is connected with the tripod 3 of integrated regulator U1, the other end of the first resistance R 1 is connected with an end of the second capacitor C 2, the other end ground connection of the second capacitor C 2, the movable end of potentiometer R2 is connected with the crus secunda 2 of integrated regulator U1, the stiff end ground connection of potentiometer R2, the negative pole of the first diode D2 is connected with the tripod 3 of integrated regulator U1, the positive pole of the first diode D2 is connected with the tie point of the first resistance R 1 and the second capacitor C 2 and the crus secunda 2 of integrated regulator U1 respectively, the positive pole of the second diode D3 is connected with the negative pole of the first diode D2, the negative pole of the second diode D3 is connected with the first pin 1 of integrated regulator U1, one end of the 3rd capacitor C 3 is connected with the negative pole of the first diode D2, the other end of the 3rd capacitor C 3 is connected with the positive pole of the 3rd diode D4, the negative pole of the 3rd diode D4 is connected with the positive pole of the 4th diode D5, the minus earth of the 4th diode D5, the second resistance R 3 and the 3rd capacitor C 3 are connected in parallel, the 4th capacitor C 4 and the first capacitor C 1 are connected in parallel, one end of the 3rd resistance R 4 is connected with the first pin 1 of integrated regulator U1, and the other end of the 3rd resistance R 4 is connected with the positive pole of the 3rd diode D4.
The model of described integrated regulator U1 is LM317AH.
The model of described rectifier D1 is 1B4B42.
The model of described the first diode D2, the second diode D3, the 3rd diode D4 and the 4th diode D5 is 1BH62.
Basic index of the present utility model:
Output voltage adjustable range: 0 ~ 6V, or 0 ~ 8V, or 0 ~ 9V, or 0 ~ 12V;
Maximum output current: interval at 0.3A ~ 1.5A;
Output resistance Ro: less than 1 ohm.
The above; it only is the better embodiment of the utility model; these embodiments all are based on the different implementations under the utility model general idea; and protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.
Claims (4)
1. adjustable D. C regulated, comprise: power transformer, rectifier, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the first diode, the second diode, the 3rd diode, the 4th diode, potentiometer and integrated regulator, it is characterized in that, the output of described power transformer is connected with tripod with the crus secunda of rectifier respectively, the 4th pin ground connection of rectifier, the first pin of rectifier is connected with the first pin of integrated regulator, one end of the first electric capacity is connected with the first pin of rectifier, the other end ground connection of the first electric capacity, one end of the first resistance is connected with the tripod of integrated regulator, the other end of the first resistance is connected with an end of the second electric capacity, the other end ground connection of the second electric capacity, the movable end of potentiometer is connected with the crus secunda of integrated regulator, the stiff end ground connection of potentiometer, the negative pole of the first diode is connected with the tripod of integrated regulator, the positive pole of the first diode is connected with the first resistance and tie point of the second electric capacity and the crus secunda of integrated regulator respectively, the positive pole of the second diode is connected with the negative pole of the first diode, the negative pole of the second diode is connected with the first pin of integrated regulator, one end of the 3rd electric capacity is connected with the negative pole of the first diode, the other end of the 3rd electric capacity is connected with the positive pole of the 3rd diode, the negative pole of the 3rd diode is connected with the positive pole of the 4th diode, the minus earth of the 4th diode, the second resistance is connected with the 3rd Capacitance parallel connection, the 4th electric capacity is connected with the first Capacitance parallel connection, one end of the 3rd resistance is connected with the first pin of integrated regulator, and the other end of the 3rd resistance is connected with the positive pole of the 3rd diode.
2. adjustable D. C regulated according to claim 1 is characterized in that, the model of described integrated regulator is LM317AH.
3. adjustable D. C regulated according to claim 1 is characterized in that, the model of described rectifier is 1B4B42.
4. adjustable D. C regulated according to claim 1 is characterized in that, the model of described the first diode, the second diode, the 3rd diode and the 4th diode is 1BH62.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353537 CN202696492U (en) | 2012-07-20 | 2012-07-20 | Adjustable DC stabilized power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353537 CN202696492U (en) | 2012-07-20 | 2012-07-20 | Adjustable DC stabilized power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696492U true CN202696492U (en) | 2013-01-23 |
Family
ID=47552045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220353537 Expired - Fee Related CN202696492U (en) | 2012-07-20 | 2012-07-20 | Adjustable DC stabilized power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202696492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287585A (en) * | 2018-01-25 | 2018-07-17 | 西安文理学院 | A kind of regulated power supply |
-
2012
- 2012-07-20 CN CN 201220353537 patent/CN202696492U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287585A (en) * | 2018-01-25 | 2018-07-17 | 西安文理学院 | A kind of regulated power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: ZHANG WEI WANG BOWEN Effective date: 20130715 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130715 Address after: 150025, No. 1 Normal University Road, Limin Development Zone, Heilongjiang, Harbin Patentee after: Harbin Teachers' Univ. Address before: 150025, No. 1 Normal University Road, Limin Development Zone, Heilongjiang, Harbin Patentee before: Harbin Teachers' Univ. Patentee before: Zhang Wei Patentee before: Wang Bowen |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20140720 |
|
| EXPY | Termination of patent right or utility model |