CN204481698U - A kind of power circuit being applicable to compact electric apparatus - Google Patents
A kind of power circuit being applicable to compact electric apparatus Download PDFInfo
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- CN204481698U CN204481698U CN201520081659.4U CN201520081659U CN204481698U CN 204481698 U CN204481698 U CN 204481698U CN 201520081659 U CN201520081659 U CN 201520081659U CN 204481698 U CN204481698 U CN 204481698U
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Abstract
The utility model discloses a kind of power circuit being applicable to compact electric apparatus, comprise power input and power output end, described power input is connected with one end of secondary with transformer primary side simultaneously, the other end of described transformer primary side is connected with the positive pole of diode with the collector electrode of triode simultaneously, the other end of the secondary of described transformer is connected with the base stage of triode by the second resistance, the grounded emitter of described triode, the negative pole of described diode is connected with power output end, the negative pole of described diode is also connected with ground capacity, described power input is connected with the first resistance of ground connection, the first described resistance is piezo-resistance, it can effectively protect electrostatic or surge, and circuit structure is simple, be applicable to compact electric apparatus to use.
Description
Technical field
The utility model relates to power circuit field, more particularly, relates to a kind of power circuit being applicable to compact electric apparatus.
Background technology
Power supply is the very important part of electrical equipment.Because the volume of compact electric apparatus is little, such as humidifier, egg steamer etc., it requires that circuit is simple, miniaturized.But existing circuit is all too complicated, is unsuitable for compact electric apparatus and uses.And electrical equipment is in use, the interference of electrostatic and surge can be run into, in existing power circuit, a little shortcoming that the protection of this respect is done.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of power circuit being applicable to compact electric apparatus, and it can effectively protect electrostatic or surge, and circuit structure is simple, is applicable to compact electric apparatus and uses.
The technical scheme in the invention for solving the above technical problem is:
A kind of power circuit being applicable to compact electric apparatus, comprise power input and power output end, described power input is connected with one end of secondary with transformer primary side simultaneously, the other end of described transformer primary side is connected with the positive pole of diode with the collector electrode of triode simultaneously, the other end of described transformer secondary is connected with the base stage of triode by the second resistance, the grounded emitter of described triode, the negative pole of described diode is connected with power output end, the negative pole of described diode is also connected with ground capacity, described power input is connected with the first resistance of ground connection, the first described resistance is piezo-resistance.
Circuit theory of the present utility model is as follows: the conducting of power supply for triode after transformer transformation provides pressure reduction, and triode carries out amplification output to voltage, and namely whole power circuit can realize powering to the boosting of voltage.Second resistance plays metering function, protects triode; The current direction of one-way to whole circuit of diode limits, and protects power circuit; Electric capacity strobes, and it is the indispensable part of power circuit.Due to compact electric apparatus in use; often electrostatic can be run into; or in open and close power supply moment; surge can be produced; power input connects the first resistance; and the first resistance is piezo-resistance; when power input has electrostatic interference or produces surge, the voltage instantaneous of power input increases, and is greater than certain value; now; the resistance of piezo-resistance diminishes, and releases, utilize piezo-resistance to electrostatic or surge; strengthen the ability of power circuit antistatic and surge, strengthen reliability and the fail safe of power supply.Adopt transformer to carry out transformation to input voltage, it also further can strengthen the Anti-surging ability of power circuit, cushions, the fail safe of intensifier circuit to surge voltage.The circuit structure of whole circuit is simple, practical, is applicable to miniaturized electrical equipment and uses.
As preferably, described transformer primary side and the ratio of secondary are greater than 3:2.
As preferably, the resistance of the second described resistance is between 250 ohm to 400 ohm.
To sum up, the beneficial effects of the utility model are:
1, for the conducting of triode provides pressure reduction after the utility model utilizes transformer to carry out transformation to power supply, triode carries out amplification to voltage and exports as electrical equipment provides operating voltage, piezo-resistance is utilized to protect electrostatic or surge, the circuit structure of its whole circuit is simple, is suitable for compact electric apparatus and uses.
2, transformer of the present utility model can not only provide the pressure reduction of conducting for triode, also can cushion surge voltage, the Anti-surging ability of forceful electric power source circuit, the fail safe of intensifier circuit.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Mark and corresponding parts title: in, power input in accompanying drawing; Out, power output end; R1, the first resistance; R2, the second resistance; T, transformer; Q, triode; D, diode; C, electric capacity.
Embodiment
Below in conjunction with embodiment and accompanying drawing, 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.
Embodiment 1:
A kind of power circuit being applicable to compact electric apparatus as shown in Figure 1, comprise power input in and power output end out, described power input in is connected with one end of secondary with the former limit of transformer T simultaneously, the other end on the described former limit of transformer T is connected with the positive pole of diode D with the collector electrode of triode Q simultaneously, the other end of the secondary of described transformer T is connected with the base stage of triode Q by the second resistance R2, the grounded emitter of described triode Q, the negative pole of described diode Q is connected with power output end out, the negative pole of described diode D is also connected with ground capacity C, described power input in is connected with the first resistance R1 of ground connection, the first described resistance R1 is piezo-resistance.
Described transformer primary side and the ratio of secondary are greater than 3:2.
The resistance of the second described resistance is between 250 ohm to 400 ohm.
Now disclose one group of detailed embodiment, the power supply for humidifier is example: electric capacity C adopts electrochemical capacitor, and can select 40 μ F, diode can adopt IN5819, and triode can adopt 8050, and the first resistance can adopt 300 ohm, and the first resistance can adopt TUR type.
As mentioned above, the utility model can be realized preferably.
Claims (3)
1. one kind is applicable to the power circuit of compact electric apparatus, it is characterized in that: comprise power input and power output end, described power input is connected with one end of secondary with transformer primary side simultaneously, the other end of described transformer primary side is connected with the positive pole of diode with the collector electrode of triode simultaneously, the other end of described transformer secondary is connected with the base stage of triode by the second resistance, the grounded emitter of described triode, the negative pole of described diode is connected with power output end, the negative pole of described diode is also connected with ground capacity, described power input is connected with the first resistance of ground connection, the first described resistance is piezo-resistance.
2. a kind of power circuit being applicable to compact electric apparatus according to claim 1, is characterized in that: described transformer primary side and the ratio of secondary are greater than 3:2.
3. a kind of power circuit being applicable to compact electric apparatus according to claim 1, is characterized in that: the resistance of the second described resistance is between 250 ohm to 400 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081659.4U CN204481698U (en) | 2015-02-05 | 2015-02-05 | A kind of power circuit being applicable to compact electric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081659.4U CN204481698U (en) | 2015-02-05 | 2015-02-05 | A kind of power circuit being applicable to compact electric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204481698U true CN204481698U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520081659.4U Expired - Fee Related CN204481698U (en) | 2015-02-05 | 2015-02-05 | A kind of power circuit being applicable to compact electric apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204481698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660067A (en) * | 2015-02-05 | 2015-05-27 | 成都市宏山科技有限公司 | Power supply circuit structure applicable to small-sized electrical appliances |
-
2015
- 2015-02-05 CN CN201520081659.4U patent/CN204481698U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660067A (en) * | 2015-02-05 | 2015-05-27 | 成都市宏山科技有限公司 | Power supply circuit structure applicable to small-sized electrical appliances |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20160205 |