CN205142000U - Teaching inductive switch formula constant voltage power supply - Google Patents
Teaching inductive switch formula constant voltage power supply Download PDFInfo
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- CN205142000U CN205142000U CN201520841070.XU CN201520841070U CN205142000U CN 205142000 U CN205142000 U CN 205142000U CN 201520841070 U CN201520841070 U CN 201520841070U CN 205142000 U CN205142000 U CN 205142000U
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Abstract
The utility model discloses a teaching inductive switch formula constant voltage power supply, including time base chip U1, resistance R1, electric capacity C1, diode VD1, inductance L and diode VDZ, resistance R1 one end is connecting resistance R3 respectively, the time base chip U1 pin 8, resistance R6 and triode VT3 projecting pole, triode VT1 collecting electrode and time base chip U1 pin 4 are connected respectively to the resistance R3 other end, it is anodal that diode VDZ is connected to triode VT1 base, diode VDZ negative pole connecting resistance R4, electric capacity C3 is connected respectively to the resistance R4 other end, inductance L and output vo, triode VT3 collecting electrode and diode VD1 negative pole are connected respectively to the inductance L other end, triode VT3 base is the connecting resistance R6 other end and resistance R7 respectively. The utility model discloses teaching inductive switch formula constant voltage power supply adopts NE555 control, does not adopt the transformer, and circuit structure is simple, and is with low costs, small, and the steady voltage is effectual, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of stabilized voltage power supply, specifically a kind of teaching inductive switch formula stabilized voltage power supply.
Background technology
Colleges and universities' electrical laboratory often can need to use stabilized voltage power supply to come to various power electrical apparatus, and its stability is extremely important, and existing a lot of stabilized voltage power supply is owing to have employed transformer, and volume is comparatively large, and cost is higher.
Utility model content
The purpose of this utility model is to provide a kind of teaching inductive switch formula stabilized voltage power supply, 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 teaching inductive switch formula stabilized voltage power supply, base chip U1 when comprising, resistance R1, electric capacity C1, diode VD1, inductance L and diode VDZ, described resistance R1 one end is contact resistance R3 respectively, time base chip U1 pin 8, resistance R6 and triode VT3 emitter, the resistance R3 other end is connecting triode VT1 collector electrode and Shi Ji chip U1 pin 4 respectively, triode VT1 base stage connects diode VDZ positive pole, diode VDZ negative pole contact resistance R4, the resistance R4 other end connects electric capacity C3 respectively, inductance L and output end vo, the inductance L other end is connecting triode VT3 collector electrode and diode VD1 negative pole respectively, triode VT3 base stage is the contact resistance R6 other end and resistance R7 respectively, resistance R7 other end connecting triode VT2 collector electrode, base chip U1 pin 3 when triode VT2 base stage is connected by resistance R5, time base chip U1 pin 5 connect electric capacity C2, the electric capacity C2 other end connects the electric capacity C3 other end respectively, diode VD1 positive pole, triode VT2 emitter, time base chip U1 pin 1, electric capacity C1 and triode VT1 emitter ground connection, the electric capacity C1 other end is contact resistance R2 respectively, time base chip U1 pin and Shi Ji chip U1 pin 6, the resistance R2 other end is the contact resistance R1 other end and Shi Ji chip U1 pin 7 respectively, time described, base chip U1 adopts NE555.
As the utility model further scheme: described diode VDZ is voltage stabilizing didoe.
Compared with prior art, the beneficial effects of the utility model are: the utility model teaching inductive switch formula stabilized voltage power supply adopts NE555 to control, and do not adopt transformer, circuit structure is simple, and cost is low, and volume is little, and voltage regulation result is good, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of teaching inductive switch formula stabilized voltage power supply.
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 teaching inductive switch formula stabilized voltage power supply, base chip U1 when comprising, resistance R1, electric capacity C1, diode VD1, inductance L and diode VDZ, resistance R1 one end is contact resistance R3 respectively, time base chip U1 pin 8, resistance R6 and triode VT3 emitter, the resistance R3 other end is connecting triode VT1 collector electrode and Shi Ji chip U1 pin 4 respectively, triode VT1 base stage connects diode VDZ positive pole, diode VDZ negative pole contact resistance R4, the resistance R4 other end connects electric capacity C3 respectively, inductance L and output end vo, the inductance L other end is connecting triode VT3 collector electrode and diode VD1 negative pole respectively, triode VT3 base stage is the contact resistance R6 other end and resistance R7 respectively, resistance R7 other end connecting triode VT2 collector electrode, base chip U1 pin 3 when triode VT2 base stage is connected by resistance R5, time base chip U1 pin 5 connect electric capacity C2, the electric capacity C2 other end connects the electric capacity C3 other end respectively, diode VD1 positive pole, triode VT2 emitter, time base chip U1 pin 1, electric capacity C1 and triode VT1 emitter ground connection, the electric capacity C1 other end is contact resistance R2 respectively, time base chip U1 pin and Shi Ji chip U1 pin 6, the resistance R2 other end is the contact resistance R1 other end and Shi Ji chip U1 pin 7 respectively, time base chip U1 adopt NE555.
Diode VDZ is voltage stabilizing didoe.
Operation principle of the present utility model is: refer to Fig. 1, NE555 and R1, R2, C1 form astable multivibrator, and frequency of oscillation is about 10kHz, and duty ratio is close to 50%.VT2, VT3 use as the switching tube expanding electric current, and when the square wave that vibrates is high level, VT2, VT3 conducting, discharges to L; During for low level, the energy storage in L is powered to the load by fly-wheel diode loop.When overvoltage, VDZ punctures, VT1 saturation conduction, and its c pole is low level (being less than 0.7V), makes NE555 reset, failure of oscillation, plays voltage stabilizing and pay-as-you-go operation.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (2)
1. a teaching inductive switch formula stabilized voltage power supply, base chip U1 when comprising, resistance R1, electric capacity C1, diode VD1, inductance L and diode VDZ, it is characterized in that, described resistance R1 one end is contact resistance R3 respectively, time base chip U1 pin 8, resistance R6 and triode VT3 emitter, the resistance R3 other end is connecting triode VT1 collector electrode and Shi Ji chip U1 pin 4 respectively, triode VT1 base stage connects diode VDZ positive pole, diode VDZ negative pole contact resistance R4, the resistance R4 other end connects electric capacity C3 respectively, inductance L and output end vo, the inductance L other end is connecting triode VT3 collector electrode and diode VD1 negative pole respectively, triode VT3 base stage is the contact resistance R6 other end and resistance R7 respectively, resistance R7 other end connecting triode VT2 collector electrode, base chip U1 pin 3 when triode VT2 base stage is connected by resistance R5, time base chip U1 pin 5 connect electric capacity C2, the electric capacity C2 other end connects the electric capacity C3 other end respectively, diode VD1 positive pole, triode VT2 emitter, time base chip U1 pin 1, electric capacity C1 and triode VT1 emitter ground connection, the electric capacity C1 other end is contact resistance R2 respectively, time base chip U1 pin and Shi Ji chip U1 pin 6, the resistance R2 other end is the contact resistance R1 other end and Shi Ji chip U1 pin 7 respectively, time described, base chip U1 adopts NE555.
2. teaching inductive switch formula stabilized voltage power supply according to claim 1, it is characterized in that, described diode VDZ is voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520841070.XU CN205142000U (en) | 2015-10-28 | 2015-10-28 | Teaching inductive switch formula constant voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520841070.XU CN205142000U (en) | 2015-10-28 | 2015-10-28 | Teaching inductive switch formula constant voltage power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205142000U true CN205142000U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520841070.XU Expired - Fee Related CN205142000U (en) | 2015-10-28 | 2015-10-28 | Teaching inductive switch formula constant voltage power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN205142000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107980406A (en) * | 2017-12-01 | 2018-05-04 | 赣州研顺飞科技有限公司 | A kind of plant cultivation car that there is water circularly purifying and utilize |
-
2015
- 2015-10-28 CN CN201520841070.XU patent/CN205142000U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107980406A (en) * | 2017-12-01 | 2018-05-04 | 赣州研顺飞科技有限公司 | A kind of plant cultivation car that there is water circularly purifying and utilize |
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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: 20160406 Termination date: 20161028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |