CN204206002U - A kind of high-power adjustable voltage-stabilized source - Google Patents
A kind of high-power adjustable voltage-stabilized source Download PDFInfo
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- CN204206002U CN204206002U CN201420688929.3U CN201420688929U CN204206002U CN 204206002 U CN204206002 U CN 204206002U CN 201420688929 U CN201420688929 U CN 201420688929U CN 204206002 U CN204206002 U CN 204206002U
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Abstract
The utility model relates to a kind of high-power adjustable voltage-stabilized source.The utility model comprises rectification circuit, filter circuit and voltage-stabilizing output circuit, 220V convert alternating current is become the direct voltage of pulsation by rectification circuit, rectification circuit comprises transformer T, rectifier bridge Q and resistance R1, filter circuit is by the most of ripple filtering in the pulsating dc voltage that is transformed into by rectification circuit, obtain level and smooth direct voltage, filter circuit comprises electric capacity C1 and resistance R2, the voltage signal processed exports by voltage-stabilizing output circuit after voltage stabilizing is amplified, and voltage-stabilizing output circuit comprises adjustable voltage stabilizer U, triode VT1 and triode VT3.The utility model structure is simple, easy to maintenance, voltage regulation result is good, be subject to the impact of power supply network alternating voltage and load current fluctuations hardly, usually not easily break down, adjustable voltage stabilizer U, once damage, can recover normal as long as change a new adjustable voltage stabilizer U and again debug output.
Description
Technical field
The utility model relates to a kind of stabilized voltage power supply, specifically a kind of high-power adjustable voltage-stabilized source.
Background technology
Along with the development of science and technology and the rise of mobile terminal, many electronic installations all require a voltage stabilizing adjustable DC power supply that precision is higher, electric current is larger.The constant voltage dc source of existing market is of a great variety, its mid and low-end products are especially many, although the relative high-end product of low-end product has the advantage of price, quality is often as one wishes not to the utmost, although and high-end product reliable in quality, safety and stability, price is high also allows people hang back.And no matter be high-end product or low-end product, they are all faced with the so common difficult problem of maintenance difficult, once damage of product, are difficult to repair, can only abandon, waste a large amount of resources.
Summary of the invention
The purpose of this utility model is to provide the high-power adjustable voltage-stabilized source that a kind of circuit structure is simple, electronic component is safe and reliable and easy to maintenance less, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of high-power adjustable voltage-stabilized source, comprise rectification circuit, filter circuit and voltage-stabilizing output circuit, 220V convert alternating current is become the direct voltage of pulsation by described rectification circuit, rectification circuit comprises transformer T, rectifier bridge Q and resistance R1, described filter circuit is by the most of ripple filtering in the pulsating dc voltage that is transformed into by rectification circuit, obtain level and smooth direct voltage, filter circuit comprises electric capacity C1, electric capacity C8 and resistance R2, the voltage signal processed exports by described voltage-stabilizing output circuit after voltage stabilizing is amplified, voltage-stabilizing output circuit comprises adjustable voltage stabilizer U, triode VT1, triode VT2 and triode VT3.
Described transformer T primary coil is connected to 220V AC power two ends by fuse RF and switch S, transformer T secondary coil one end connects rectifier bridge Q port 3 and electric capacity C7 respectively, the transformer T secondary coil other end connects rectifier bridge Q port one and electric capacity C8 respectively, and rectifier bridge Q port 2 is contact resistance R1 respectively, the electric capacity C7 other end, triode VT1 collector electrode, triode VT2 collector electrode, triode VT3 collector electrode, triode VT4 collector electrode, diode VD5 positive pole, electric capacity C1, resistance R2, diode VD6 positive pole, rectifier bridge Q port 4 connects the electric capacity C8 other end respectively, the resistance R1 other end, the electric capacity C1 other end, the resistance R2 other end, electric capacity C2, potentiometer RP1, potentiometer RP1 slide plate, electric capacity C4, electric capacity C5, electric capacity C6 and negative output terminal, described diode VD5 negative pole connects the electric capacity C6 other end and triode VT5 collector electrode respectively, and described diode CD6 negative pole connects adjustable voltage stabilizer U pin 11 respectively, adjustable voltage stabilizer U pin 12, the electric capacity C4 other end and the electric capacity C5 other end, described adjustable voltage stabilizer U pin 7 ground connection, adjustable voltage stabilizer U pin 13 connects electric capacity C3 and the electric capacity C2 other end respectively, and adjustable voltage stabilizer U pin 4 connects the electric capacity C3 other end respectively, resistance R3 and the potentiometer RP1 other end, adjustable voltage stabilizer U pin 3 is the contact resistance R3 other end and resistance RS, adjustable voltage stabilizer U pin 2 contact resistance RS respectively respectively, resistance R4 ~ R8 and positive output end, adjustable voltage stabilizer U pin 10 is the contact resistance R8 other end and triode VT5 base stage respectively, and described triode VT1 base stage is connecting triode VT2 base stage respectively, triode VT3 base stage, triode VT4 base stage and triode VT5 emitter, the triode VT1 emitter contact resistance R4 other end, the triode VT2 emitter contact resistance R5 other end, the triode VT3 emitter contact resistance R6 other end, the triode VT4 emitter contact resistance R7 other end.
As further program of the utility model: the adjustable voltage stabilizer of described adjustable voltage stabilizer U to be model be UA723.
As the utility model further scheme: described electric capacity C7, electric capacity C8 are the shunt capacitances improving hum, described resistance RS is short circuit current limitation protective resistance, the output current of restriction adjustable voltage stabilizer U.
Compared with prior art, the beneficial effects of the utility model are: the utility model circuit structure is simple, easy to maintenance, voltage regulation result is good, be subject to the impact of power supply network alternating voltage and load current fluctuations hardly, as long as device quality is guaranteed, usually not easily break down.UA723, once damage and can cause the higher or no-output voltage phenomenon of output voltage, can recover normal as long as change a new UA723 and again debug output.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of high-power adjustable voltage-stabilized source.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of high-power adjustable voltage-stabilized source, comprise rectification circuit, filter circuit and voltage-stabilizing output circuit, 220V convert alternating current is become the direct voltage of pulsation by rectification circuit, rectification circuit comprises transformer T, rectifier bridge Q and resistance R1, filter circuit is by the most of ripple filtering in the pulsating dc voltage that is transformed into by rectification circuit, obtain level and smooth direct voltage, filter circuit comprises electric capacity C1, electric capacity C8 and resistance R2, the voltage signal processed exports by voltage-stabilizing output circuit after voltage stabilizing is amplified, voltage-stabilizing output circuit comprises adjustable voltage stabilizer U, triode VT1, triode VT2 and triode VT3.
Transformer T primary coil is connected to 220V AC power two ends by fuse RF and switch S, transformer T secondary coil one end connects rectifier bridge Q port 3 and electric capacity C7 respectively, the transformer T secondary coil other end connects rectifier bridge Q port one and electric capacity C8 respectively, and rectifier bridge Q port 2 is contact resistance R1 respectively, the electric capacity C7 other end, triode VT1 collector electrode, triode VT2 collector electrode, triode VT3 collector electrode, triode VT4 collector electrode, diode VD5 positive pole, electric capacity C1, resistance R2, diode VD6 positive pole, rectifier bridge Q port 4 connects the electric capacity C8 other end respectively, the resistance R1 other end, the electric capacity C1 other end, the resistance R2 other end, electric capacity C2, potentiometer RP1, potentiometer RP1 slide plate, electric capacity C4, electric capacity C5, electric capacity C6 and negative output terminal, diode VD5 negative pole connects the electric capacity C6 other end and triode VT5 collector electrode respectively, and diode CD6 negative pole connects adjustable voltage stabilizer U pin 11 respectively, adjustable voltage stabilizer U pin 12, the electric capacity C4 other end and the electric capacity C5 other end, adjustable voltage stabilizer U pin 7 ground connection, adjustable voltage stabilizer U pin 13 connects electric capacity C3 and the electric capacity C2 other end respectively, and adjustable voltage stabilizer U pin 4 connects the electric capacity C3 other end respectively, resistance R3 and the potentiometer RP1 other end, adjustable voltage stabilizer U pin 3 is the contact resistance R3 other end and resistance RS, adjustable voltage stabilizer U pin 2 contact resistance RS respectively respectively, resistance R4 ~ R8 and positive output end, adjustable voltage stabilizer U pin 10 is the contact resistance R8 other end and triode VT5 base stage respectively, and triode VT1 base stage is connecting triode VT2 base stage respectively, triode VT3 base stage, triode VT4 base stage and triode VT5 emitter, the triode VT1 emitter contact resistance R4 other end, the triode VT2 emitter contact resistance R5 other end, the triode VT3 emitter contact resistance R6 other end, the triode VT4 emitter contact resistance R7 other end.
The adjustable voltage stabilizer of adjustable voltage stabilizer U to be model be UA723.
Electric capacity C7, electric capacity C8 are the shunt capacitances improving hum, and resistance RS is short circuit current limitation protective resistance, the output current of restriction adjustable voltage stabilizer U.
Operation principle of the present utility model is: adjustable voltage stabilizer UA723 itself is a kind of in-line adjustable voltage stabilizer; its controllable output voltage Vo=2 ~ 37V; output current I=0.15A, adjustable voltage stabilizer UA723 also have and export little, the Ripple Suppression of temperature drift than features such as high, short circuit current limitation protections.The voltage-stabiliser tube and the divider resistance that meet a 6.2V in adjustable voltage stabilizer UA723 pin 8 form reference voltage circuit, adjustable voltage stabilizer UA723 pin 4 is inverting input, also known as sampling end, change the resistance of external potentiometer RP1, adjustable voltage stabilizer UA723 pin 10 output voltage values can be changed.Adjustable voltage stabilizer UA723 pin 10 voltage output value determines external Veb potential value and the conduction amount thereof expanding stream triode VT5 of adjustable voltage stabilizer UA723; thus also control 4 large power triode VT1-VT4 output valves in parallel; electric capacity C3 is external weakening electric capacity; resistance RS is short circuit current limitation protective resistance; the output current of UA723 can be limited; electric capacity C7, electric capacity C8 are the shunt capacitances improving hum, and resistance R1 is bleeder resistance, plays burning voltage again.
Claims (3)
1. a high-power adjustable voltage-stabilized source, comprise rectification circuit, filter circuit and voltage-stabilizing output circuit, it is characterized in that, 220V convert alternating current is become the direct voltage of pulsation by described rectification circuit, rectification circuit comprises transformer T, rectifier bridge Q and resistance R1, described filter circuit is by the most of ripple filtering in the pulsating dc voltage that is transformed into by rectification circuit, obtain level and smooth direct voltage, filter circuit comprises electric capacity C1, electric capacity C8 and resistance R2, the voltage signal processed exports by described voltage-stabilizing output circuit after voltage stabilizing is amplified, voltage-stabilizing output circuit comprises adjustable voltage stabilizer U, triode VT1, triode VT2 and triode VT3,
Described transformer T primary coil is connected to 220V AC power two ends by fuse RF and switch S, transformer T secondary coil one end connects rectifier bridge Q port 3 and electric capacity C7 respectively, the transformer T secondary coil other end connects rectifier bridge Q port one and electric capacity C8 respectively, and rectifier bridge Q port 2 is contact resistance R1 respectively, the electric capacity C7 other end, triode VT1 collector electrode, triode VT2 collector electrode, triode VT3 collector electrode, triode VT4 collector electrode, diode VD5 positive pole, electric capacity C1, resistance R2, diode VD6 positive pole, rectifier bridge Q port 4 connects the electric capacity C8 other end respectively, the resistance R1 other end, the electric capacity C1 other end, the resistance R2 other end, electric capacity C2, potentiometer RP1, potentiometer RP1 slide plate, electric capacity C4, electric capacity C5, electric capacity C6 and negative output terminal, described diode VD5 negative pole connects the electric capacity C6 other end and triode VT5 collector electrode respectively, and described diode CD6 negative pole connects adjustable voltage stabilizer U pin 11 respectively, adjustable voltage stabilizer U pin 12, the electric capacity C4 other end and the electric capacity C5 other end, described adjustable voltage stabilizer U pin 7 ground connection, adjustable voltage stabilizer U pin 13 connects electric capacity C3 and the electric capacity C2 other end respectively, and adjustable voltage stabilizer U pin 4 connects the electric capacity C3 other end respectively, resistance R3 and the potentiometer RP1 other end, adjustable voltage stabilizer U pin 3 is the contact resistance R3 other end and resistance RS, adjustable voltage stabilizer U pin 2 contact resistance RS respectively respectively, resistance R4 ~ R8 and positive output end, adjustable voltage stabilizer U pin 10 is the contact resistance R8 other end and triode VT5 base stage respectively, and described triode VT1 base stage is connecting triode VT2 base stage respectively, triode VT3 base stage, triode VT4 base stage and triode VT5 emitter, the triode VT1 emitter contact resistance R4 other end, the triode VT2 emitter contact resistance R5 other end, the triode VT3 emitter contact resistance R6 other end, the triode VT4 emitter contact resistance R7 other end.
2. high-power adjustable voltage-stabilized source according to claim 1, is characterized in that, the adjustable voltage stabilizer of described adjustable voltage stabilizer U to be model be UA723.
3. high-power adjustable voltage-stabilized source according to claim 1, is characterized in that, described electric capacity C7, electric capacity C8 are the shunt capacitances improving hum, and described resistance RS is short circuit current limitation protective resistance, the output current of restriction adjustable voltage stabilizer U.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688929.3U CN204206002U (en) | 2014-11-17 | 2014-11-17 | A kind of high-power adjustable voltage-stabilized source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688929.3U CN204206002U (en) | 2014-11-17 | 2014-11-17 | A kind of high-power adjustable voltage-stabilized source |
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| Publication Number | Publication Date |
|---|---|
| CN204206002U true CN204206002U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420688929.3U Expired - Fee Related CN204206002U (en) | 2014-11-17 | 2014-11-17 | A kind of high-power adjustable voltage-stabilized source |
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| CN (1) | CN204206002U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879228A (en) * | 2017-02-23 | 2017-06-20 | 惠安盛泽建材有限公司 | A kind of electrical control system of elevator based on Internet of Things |
| CN109039109A (en) * | 2018-08-24 | 2018-12-18 | 佛山市众盈电子有限公司 | The accurate voltage-stablizer power supply switch circuit system of high frequency |
-
2014
- 2014-11-17 CN CN201420688929.3U patent/CN204206002U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879228A (en) * | 2017-02-23 | 2017-06-20 | 惠安盛泽建材有限公司 | A kind of electrical control system of elevator based on Internet of Things |
| CN109039109A (en) * | 2018-08-24 | 2018-12-18 | 佛山市众盈电子有限公司 | The accurate voltage-stablizer power supply switch circuit system of high frequency |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20161117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |