CN203616921U - Tandem type regulated power supply circuit for teaching - Google Patents
Tandem type regulated power supply circuit for teaching Download PDFInfo
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- CN203616921U CN203616921U CN201320647223.8U CN201320647223U CN203616921U CN 203616921 U CN203616921 U CN 203616921U CN 201320647223 U CN201320647223 U CN 201320647223U CN 203616921 U CN203616921 U CN 203616921U
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Abstract
The utility model discloses a tandem type regulated power supply circuit for teaching, which includes a bridge rectification circuit, a filter circuit and a tandem type regulated circuit; the rectification filter circuit is comprised by a transformer T, bridge rectifier diodes VD1 to VD4 and a electrolytic capacitor, as well as the tandem type regulated circuit is comprised by audions VT1 to VT3, resistances R3 to R6, potentiometers RP1 and a stabilivolt VW1; the supply protection circuit consists of a audion VT4 and resistances R1 and R2; the regulated power supply circuit is applied into the specific teaching research to enlighten students to build a specific power circuit and set the supply protection circuit, learning to meet practical needs, motivating the students' interests and motivations for learning the circuit and improving the quality of teaching.
Description
Technical field
The utility model relates to a kind of power circuit, is specifically related to a kind of teaching series regulator circuit.
Background technology
Series voltage stabilizing power supply, utilizes the adjustment pipe being series in circuit to carry out dynamic dividing potential drop and make load obtain the circuit of burning voltage, plays vital effect in the study of Analog Electronics Technique circuit.
At present, for the study of series regulator circuit, teacher is the pattern that adopts Classroom theory to give lessons mostly, student only knows the knowwhy that it is basic, and do not know how it is specifically applied in actual circuit, such teaching pattern lacks learning interest for student, does not utilize raising the actual of student to start and functipnal capability, also can not meet current teaching requirement and theory simultaneously.
Utility model content
The purpose of this utility model be to provide a kind of can stabilized voltage supply the application circuit of teaching use, i.e. a kind of teaching series regulator circuit.
In order to address the above problem, the technical solution adopted in the utility model is: series regulator circuit is used in a kind of teaching, and it comprises bridge rectifier circuit, filtering circuit and serial voltage regulation circuit; Described current rectifying and wave filtering circuit is made up of transformer T, bridge rectifier diode VD1～VD4 and electrochemical capacitor C1, the secondary coil of described transformer T is connected with bridge rectifier diode VD1～VD4, the anodic bonding of the positive pole of described electrochemical capacitor C1 and diode VD2, the negative pole of electrochemical capacitor C1 is connected with the negative electrode of diode VD4, also comprise power protecting circuit, described power protecting circuit is made up of triode VT4, resistance R 1, R2; The collector of described triode VT4 is connected with the base stage of triode VT2, and the emitter of triode VT2 is connected with the base stage of triode VT1, and the base stage of described triode VT2 is connected with the collector of triode VT3; The collector of resistance R 6, triode VT2 and triode VT1 respectively with the anodic bonding of diode VD2; The positive pole of resistance R 3, resistance R 4, capacitor C 2 and pull-up resistor RL connect respectively at the emitter of triode VT1, between the base stage of described triode VT4 and emitter, be connected with resistance R 1 and R2, the emitter of described triode VT3 is connected with the negative electrode of resistance R 3 and voltage stabilizing diode VW1, the base stage of triode VT3 is connected with potentiometer RP1, and potentiometer RP1 is arranged between resistance R 4 and resistance R 5; The negative pole of described resistance R 5 capacitor C 2, the anode of voltage stabilizing diode VW1 and pull-up resistor RL are connected with the base stage of triode VT4 respectively.
Described voltage stabilizing diode adopts 2CW7B voltage stabilizing diode.
Described triode VT2 and VT4 adopt 9013 serial triodes; Described triode VT1 adopts 3DD5B series triode, and described triode VT3 adopts 3DG60 series triode.
Compared with prior art: voltage-stabilized power supply circuit is applied in concrete teaching research; the lively hand of heuristics goes to build concrete power circuit, and power protecting circuit is set, and studies in order to practise; excite interest and the enthusiasm of student for Analog Electronics Technique circuit learning, improve the quality of teaching.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, series regulator circuit is used in a kind of teaching, and it comprises bridge rectifier circuit, filtering circuit and serial voltage regulation circuit; Described current rectifying and wave filtering circuit is made up of transformer T, bridge rectifier diode VD1～VD4 and electrochemical capacitor C1, the secondary coil of described transformer T is connected with bridge rectifier diode VD1～VD4, the anodic bonding of the positive pole of described electrochemical capacitor C1 and diode VD2, the negative pole of electrochemical capacitor C1 is connected with the negative electrode of diode VD4, also comprise power protecting circuit, described power protecting circuit is made up of triode VT4, resistance R 1, R2; The collector of described triode VT4 is connected with the base stage of triode VT2, and the emitter of triode VT2 is connected with the base stage of triode VT1, and the base stage of described triode VT2 is connected with the collector of triode VT3; The collector of resistance R 6, triode VT2 and triode VT1 respectively with the anodic bonding of diode VD2; The positive pole of resistance R 3, resistance R 4, capacitor C 2 and pull-up resistor RL connect respectively at the emitter of triode VT1, between the base stage of described triode VT4 and emitter, be connected with resistance R 1 and R2, the emitter of described triode VT3 is connected with the negative electrode of resistance R 3 and voltage stabilizing diode VW1, the base stage of triode VT3 is connected with potentiometer RP1, and potentiometer RP1 is arranged between resistance R 4 and resistance R 5; The negative pole of described resistance R 5 capacitor C 2, the anode of voltage stabilizing diode VW1 and pull-up resistor RL are connected with the base stage of triode VT4 respectively.
Described voltage stabilizing diode adopts 2CW7B voltage stabilizing diode.
Described triode VT2 and VT4 adopt 9013 serial triodes; Described triode VT1 adopts 3DD5B series triode, and described triode VT3 adopts 3DG60 series triode.
This circuit working process is as follows:
The alternating current of line voltage is through transformer T transformation, in the process rectification of bridge rectifier circuit and the filtering of electrochemical capacitor C1, obtain the DC voltage UI of position as shown in Figure 1, when voltage ripple of power network or load variations are when very large, DC voltage UI changes can be very greatly, can not voltage stabilizing, just need mu balanced circuit to carry out voltage stabilizing.
In the time of line voltage or load current variation (being that UI increases or IL reduces), while causing output voltage U O to increase, through the corresponding increase of sampling voltage of resistance R 4, R5, potentiometer RP1, so the base voltage UB3 of triode VT3 increases, its collector current IC3 increases thereupon, and the collector voltage UC3 of triode VT3 declines; Because the base voltage UB2=UC3 of triode VT2, thereby the collector current IC1 of triode VT1 reduces, its emitter voltage UCE1 increases, and output voltage U O=UI-UCE1 is declined, result remains unchanged UO substantially, and above-mentioned pressure regulation process is negative feedback process.Otherwise, because making UO, certain reason declines, and by negative feedback process, the voltage U CE1 between collector and the emitter of triode VT1 is reduced, thereby UO is increased, result makes UO substantially keep constant, and regulator potentiometer RP1 can change the size of output voltage.
The adjustment pipe (being triode VT1 and VT2) of series regulator is in series with load RL; once there is the situation of output terminal overload or short circuit; adjust pipe (being triode VT1～VT2) and will bear very large voltage and current; thereby cause the power consumption of adjusting pipe (VT1～VT2) to exceed its ratings and therefore heating burnout must carry out current-limiting protection.
When in the normal situation of load current, triode VT4 cut-off, adjust pipe (being triode VT1～VT2) working properly, in the time that output current IO increases, circuit will produce following positive feedback, IO increases, voltage in resistance R 1 increases, because UB4=UR1-UR2, so triode VT4 base voltage UB4 increases, its collector current IC4 increases thereupon, the collector voltage UC4 of triode VT4 declines, because the base voltage UB2=UC4 of triode VT2, thereby the collector current IC1 of triode VT1 reduces, the collector of VT1 pipe and emitter voltage UCE1 increase, output voltage U O=UI-UCE1 is declined, output current IO reduces.Thereby the electric current through adjusting pipe (being triode VT1～VT2) is reduced, play the effect of protection.
Compared with prior art: voltage-stabilized power supply circuit is applied in concrete teaching research; the lively hand of heuristics goes to build concrete power circuit, and power protecting circuit is set, and studies in order to practise; excite interest and the enthusiasm of student for Analog Electronics Technique circuit learning, improve the quality of teaching.
Claims (3)
1. a teaching series regulator circuit, it comprises bridge rectifier circuit, filtering circuit and serial voltage regulation circuit; Described current rectifying and wave filtering circuit is made up of transformer T, bridge rectifier diode VD1～VD4 and electrochemical capacitor C1, the secondary coil of described transformer T is connected with bridge rectifier diode VD1～VD4, the anodic bonding of the positive pole of described electrochemical capacitor C1 and diode VD2, the negative pole of electrochemical capacitor C1 is connected with the negative electrode of diode VD4, it is characterized in that: also comprise power protecting circuit, described power protecting circuit is made up of triode VT4, resistance R 1, R2; The collector of described triode VT4 is connected with the base stage of triode VT2, and the emitter of triode VT2 is connected with the base stage of triode VT1, and the base stage of described triode VT2 is connected with the collector of triode VT3; The collector of resistance R 6, triode VT2 and triode VT1 respectively with the anodic bonding of diode VD2; The positive pole of resistance R 3, resistance R 4, capacitor C 2 and pull-up resistor RL connect respectively at the emitter of triode VT1, between the base stage of described triode VT4 and emitter, be connected with resistance R 1 and R2, the emitter of described triode VT3 is connected with the negative electrode of resistance R 3 and voltage stabilizing diode VW1, the base stage of triode VT3 is connected with potentiometer RP1, and potentiometer RP1 is arranged between resistance R 4 and resistance R 5; The negative pole of described resistance R 5 capacitor C 2, the anode of voltage stabilizing diode VW1 and pull-up resistor RL are connected with the base stage of triode VT4 respectively.
2. teaching according to claim 1 series regulator circuit, is characterized in that: described voltage stabilizing diode adopts 2CW7B voltage stabilizing diode.
3. teaching according to claim 1 and 2 series regulator circuit, is characterized in that: described triode VT2 and VT4 adopt 9013 serial triodes; Described triode VT1 adopts 3DD5B series triode, and described triode VT3 adopts 3DG60 series triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320647223.8U CN203616921U (en) | 2013-10-18 | 2013-10-18 | Tandem type regulated power supply circuit for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320647223.8U CN203616921U (en) | 2013-10-18 | 2013-10-18 | Tandem type regulated power supply circuit for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203616921U true CN203616921U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320647223.8U Expired - Fee Related CN203616921U (en) | 2013-10-18 | 2013-10-18 | Tandem type regulated power supply circuit for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203616921U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160523A (en) * | 2016-07-14 | 2016-11-23 | 成都市思卡利科技有限公司 | A kind of regulated power supply method of supplying power to using pi type filter to be filtered |
| CN109687737A (en) * | 2018-12-27 | 2019-04-26 | 钟祥博谦信息科技有限公司 | Regulated power supply |
-
2013
- 2013-10-18 CN CN201320647223.8U patent/CN203616921U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160523A (en) * | 2016-07-14 | 2016-11-23 | 成都市思卡利科技有限公司 | A kind of regulated power supply method of supplying power to using pi type filter to be filtered |
| CN109687737A (en) * | 2018-12-27 | 2019-04-26 | 钟祥博谦信息科技有限公司 | Regulated power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140528 Termination date: 20151018 |
|
| EXPY | Termination of patent right or utility model |