CN204967647U - Educational broadcast power supply circuit - Google Patents
Educational broadcast power supply circuit Download PDFInfo
- Publication number
- CN204967647U CN204967647U CN201520673023.9U CN201520673023U CN204967647U CN 204967647 U CN204967647 U CN 204967647U CN 201520673023 U CN201520673023 U CN 201520673023U CN 204967647 U CN204967647 U CN 204967647U
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- China
- Prior art keywords
- relay
- electric capacity
- power supply
- connects
- triode
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Abstract
The utility model discloses an educational broadcast power supply circuit, including chip IC1, relay J, battery E and triode V1, relay J's contact J -1's motionless end 1, electric capacity C2 and rectifier bridge T's port 2 is connected to chip IC1's pin 1, and rectifier bridge T's port 1 connecting resistance R1, electric capacity C1 and transient voltage restrain diode DW, and electric capacity C1's the other end and 220V alternating current are connected to resistance R1's the other end. The utility model discloses educational broadcast power supply circuit simple structure, components and parts are few, increase the voltage stabilizing element on mains power supply's main line, and it is undulant to restrain the commercial power to utilize relay, triode and three terminal regulator to constitute but retooling piece of power, when meetting the main line outage, but change to the emergency power source power supply automatically, have consequently that the cost of manufacture is low, stable performance and an accurate advantage of control.
Description
Technical field
The utility model relates to a kind of power circuit, specifically a kind of educational broadcast power circuit.
Background technology
Educational broadcast is the public address system of school's indispensability; often be used to play English Listening Comprehension, education informations, campus bulletin etc.; teaching is had very important significance; educational broadcast is in use once occur that power-off will cause larger impact; adverse effect is brought to the study of student; therefore its power requirement is higher, and a lot of study at present also uses common Power supply, often can occur to broadcast the problem having a power failure and be subject to city's electrical interference.
Utility model content
The purpose of this utility model is to provide a kind of educational broadcast power circuit, 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 educational broadcast power circuit, comprise chip IC 1, relay J, storage battery E and triode V1, the pin 1 of described chip IC 1 connects the not moved end 1 of the contact J-1 of relay J, the port 2 of electric capacity C2 and rectifier bridge T, the port one contact resistance R1 of rectifier bridge T, electric capacity C1 and transient voltage suppressor diode DW, the other end of resistance R1 connects the other end and the 220V alternating current of electric capacity C1, the port 3 of rectifier bridge T connects the other end of transient voltage suppressor diode DW and the other end of 220V alternating current, the port 4 of rectifier bridge T connects the other end of electric capacity C2, the negative pole of storage battery E, the emitter of triode V1, the pin 2 of broadcaster A and chip IC 1, the base stage of the pin 3 connecting triode V1 of chip IC 1, the collector electrode of triode V1 connects anode and the relay J of diode D1, the negative pole of diode D1 connects the other end of relay J, the moved end 3 of the other end of broadcaster A and the contact J-1 of relay J, the not moved end 2 of the contact J-1 of relay J connects the positive pole of storage battery E, described chip IC 1 is 7805 three terminal regulators.
As the utility model further scheme: the model of described transient voltage suppressor diode DW is SMCJ7.0A.
Compared with prior art, the beneficial effects of the utility model are: the utility model educational broadcast circuit construction of electric power is simple, components and parts are few, the main line of mains-supplied increases voltage stabilizing element, city's electro-mechanical wave can be suppressed, and utilize relay, triode and three terminal regulator to form power supply but die change block, when running into main line power-off, automatically but change to emergency power supply and power, therefore have that cost of manufacture is low, stable performance and control advantage accurately.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of educational broadcast power circuit.
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, a kind of educational broadcast power circuit, comprise chip IC 1, relay J, storage battery E and triode V1, the pin 1 of described chip IC 1 connects the not moved end 1 of the contact J-1 of relay J, the port 2 of electric capacity C2 and rectifier bridge T, the port one contact resistance R1 of rectifier bridge T, electric capacity C1 and transient voltage suppressor diode DW, the other end of resistance R1 connects the other end and the 220V alternating current of electric capacity C1, the port 3 of rectifier bridge T connects the other end of transient voltage suppressor diode DW and the other end of 220V alternating current, the port 4 of rectifier bridge T connects the other end of electric capacity C2, the negative pole of storage battery E, the emitter of triode V1, the pin 2 of broadcaster A and chip IC 1, the base stage of the pin 3 connecting triode V1 of chip IC 1, the collector electrode of triode V1 connects anode and the relay J of diode D1, the negative pole of diode D1 connects the other end of relay J, the moved end 3 of the other end of broadcaster A and the contact J-1 of relay J, the not moved end 2 of the contact J-1 of relay J connects the positive pole of storage battery E, described chip IC 1 is 7805 three terminal regulators.
The model of described transient voltage suppressor diode DW is SMCJ7.0A.
Operation principle of the present utility model is: 220V line voltage is through resistance R1 and electric capacity C1 step-down, circuit supply is given after rectifier bridge T rectification and electric capacity C1 filtering, the peak voltage clamper that city's electro-mechanical wave can produce by transient voltage suppressor diode DW is to safety value, increase the stability of line voltage, the voltage that rectifier bridge T exports exports 5V direct voltage to triode V1 from its 3 pin after three terminal regulator IC1, triode V1 must be conducted, relay J is energized, its contact action makes 1, 3 terminations are led to, broadcaster A is energized by commercial power supply, when running into line damage or have a power failure, chip IC 1 power-off, its 3 pin is low level, triode V1 disconnects, relay J dead electricity, its contact J-1 connects 2, 3 ends, broadcaster A normal power supply, circuit structure is simple, components and parts are few, the main line of mains-supplied increases voltage stabilizing element, city's electro-mechanical wave can be suppressed, and utilize relay, triode and three terminal regulator composition power supply but die change block, when running into main line power-off, automatically but change to emergency power supply to power, therefore there is cost of manufacture low, stable performance and control advantage accurately.
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. an educational broadcast power circuit, comprise chip IC 1, relay J, storage battery E and triode V1, it is characterized in that, the pin 1 of described chip IC 1 connects the not moved end 1 of the contact J-1 of relay J, the port 2 of electric capacity C2 and rectifier bridge T, the port one contact resistance R1 of rectifier bridge T, electric capacity C1 and transient voltage suppressor diode DW, the other end of resistance R1 connects the other end and the 220V alternating current of electric capacity C1, the port 3 of rectifier bridge T connects the other end of transient voltage suppressor diode DW and the other end of 220V alternating current, the port 4 of rectifier bridge T connects the other end of electric capacity C2, the negative pole of storage battery E, the emitter of triode V1, the pin 2 of broadcaster A and chip IC 1, the base stage of the pin 3 connecting triode V1 of chip IC 1, the collector electrode of triode V1 connects anode and the relay J of diode D1, the negative pole of diode D1 connects the other end of relay J, the moved end 3 of the other end of broadcaster A and the contact J-1 of relay J, the not moved end 2 of the contact J-1 of relay J connects the positive pole of storage battery E, described chip IC 1 is 7805 three terminal regulators.
2. a kind of educational broadcast power circuit according to claim 1, is characterized in that, the model of described transient voltage suppressor diode DW is SMCJ7.0A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520673023.9U CN204967647U (en) | 2015-08-31 | 2015-08-31 | Educational broadcast power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520673023.9U CN204967647U (en) | 2015-08-31 | 2015-08-31 | Educational broadcast power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204967647U true CN204967647U (en) | 2016-01-13 |
Family
ID=55062685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520673023.9U Expired - Fee Related CN204967647U (en) | 2015-08-31 | 2015-08-31 | Educational broadcast power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204967647U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979072A (en) * | 2017-12-29 | 2018-05-01 | 郑州天舜电子技术有限公司 | The motor power that a kind of anti-overheat is burnt |
| CN108481633A (en) * | 2018-05-16 | 2018-09-04 | 杨建怀 | A kind of environmentally friendly cooling device for rubber product process |
-
2015
- 2015-08-31 CN CN201520673023.9U patent/CN204967647U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979072A (en) * | 2017-12-29 | 2018-05-01 | 郑州天舜电子技术有限公司 | The motor power that a kind of anti-overheat is burnt |
| CN108481633A (en) * | 2018-05-16 | 2018-09-04 | 杨建怀 | A kind of environmentally friendly cooling device for rubber product process |
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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: 20160113 Termination date: 20160831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |