CN104617789A - Simple power circuit - Google Patents
Simple power circuit Download PDFInfo
- Publication number
- CN104617789A CN104617789A CN201510060263.6A CN201510060263A CN104617789A CN 104617789 A CN104617789 A CN 104617789A CN 201510060263 A CN201510060263 A CN 201510060263A CN 104617789 A CN104617789 A CN 104617789A
- Authority
- CN
- China
- Prior art keywords
- triode
- field effect
- resistance
- circuit
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a simple power circuit. The simple power circuit comprises a power input end; a surge protecting circuit and a power booster circuit are connected to the power input end; the surge protecting circuit comprises a first resistor, a comparator and a field effect tube; two input ends of the comparator are respectively connected to two ends of the first resistor; one end of the first resistor is connected with the power input end, and while the other end of the first resistor is connected to a source electrode of the field effect tube; the output end of the comparator is connected to a grid electrode of the field effect tube; the power booster circuit comprises a transformer and a triode; one of the ends of the original side and the secondary side of the transformer is connected to a drain electrode of the field effect tube; the other end of the original side of the transformer is synchronously connected to a collection electrode of the triode and a positive electrode of the diode; the other end of the secondary side of the transformer is connected with a base electrode of the triode through a second resistor; an emission electrode of the triode is grounded; a negative electrode of the diode is connected with a ground capacitor. The simple power circuit is simple in structure, has the surge protection function, and is suitable for small electric appliances.
Description
Technical field
The present invention relates to power circuit field, particularly, relate to a kind of Simple electric source circuit.
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, switch in a flash, can produce the interference of surge, in existing power circuit, and a little shortcoming that the protection of this respect is done.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Simple electric source circuit, and its circuit structure is simple, has carrying out surge protection function, is applicable to compact electric apparatus and uses.
The present invention's adopted technical scheme that solves the problem is:
A kind of Simple electric source circuit, comprise power input, described power input is connected with surging protection circuit and power boost circuit, described surging protection circuit comprises the first resistance, comparator and field effect transistor, and two inputs of described comparator are connected to the two ends of the first resistance, one end of the first described resistance is connected with power input, the other end is connected on the source electrode of field effect transistor, the output of described comparator is connected on the grid of field effect transistor, described power boost circuit comprises transformer and triode, described transformer primary side and one end of secondary are all connected in the drain electrode of field effect transistor, the other end of described transformer primary side is connected on the collector electrode of triode and the positive pole of diode 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 ground capacity.
The negative pole i.e. power output end of this power circuit of diode.Circuit theory of the present invention 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 the second 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, open and close power supply moment, can surge be produced, power input connects surging protection circuit, when power input produce surge time, surging protection circuit turns off path immediately, protects circuit.The circuit structure of this surging protection circuit is simple, when the voltage of power input is normal, whole circuit normally works, when power input has surge, the electric current flowing through the first resistance increases, comparator detects resistance two ends electric current, and when electric current is excessive, pressure drop increases, and makes comparator output signal turn off field effect transistor.Utilize surging protection circuit, strengthen the ability of power circuit Anti-surging, 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, the Standard resistance range of the first described resistance is 600 ohm-1000 ohm.
As preferably, described field effect transistor is PMOS.
As preferably, the former limit of described transformer and the ratio of secondary are 3:2.
To sum up, the invention has the beneficial effects as follows:
1, for the conducting of triode provides pressure reduction after the present invention utilizes transformer to carry out transformation to power supply, triode carries out amplification to voltage and exports as electrical equipment provides operating voltage, surging protection circuit is utilized to protect surge, the circuit structure of its whole circuit is simple, is suitable for compact electric apparatus and uses.
2, transformer of the present invention 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 invention.
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; MOS, field effect transistor; U, comparator.
Embodiment
Below in conjunction with embodiment and accompanying drawing, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
A kind of Simple electric source circuit as shown in Figure 1, comprise power input in, described power input is connected with surging protection circuit and power boost circuit, described surging protection circuit comprises the first resistance R1, comparator U and field effect transistor MOS, and two inputs of described comparator U are connected to the two ends of the first resistance R1, one end of the first described resistance R1 is connected with power input, the other end is connected on the source electrode of field effect transistor MOS, the output of described comparator U is connected on the grid of field effect transistor MOS, described power boost circuit comprises transformer T and triode Q, the described former limit of transformer T and one end of secondary are all connected in the drain electrode of field effect transistor, the other end of described transformer primary side is connected on the collector electrode of triode Q and the positive pole of diode D simultaneously, the other end of described transformer secondary is connected with the base stage of triode by the second resistance R2, the grounded emitter of described triode, the negative pole of described diode is connected with ground capacity C.
In order to protect whole circuit, the first resistance plays metering function, and when surge acts on power input, it can be protected follow-up circuit, and consider from overall and power consumption, the Standard resistance range of the first described resistance is 600 ohm-1000 ohm.
Described field effect transistor is PMOS.
The former limit of described transformer and the ratio of secondary are 3:2.
One group of detailed embodiment is now disclosed, power supply for humidifier is example: electric capacity C adopts electrochemical capacitor, 40 μ F can be selected, diode can adopt IN5819, triode can adopt 8050, and the first resistance can adopt 700 ohm, and the second resistance can adopt 350 ohm, field effect transistor is PMOS, and comparator can adopt LM211D.
As mentioned above, the present invention can be realized preferably.
Claims (4)
1. a Simple electric source circuit, comprise power input, it is characterized in that: described power input is connected with surging protection circuit and power boost circuit, described surging protection circuit comprises the first resistance, comparator and field effect transistor, and two inputs of described comparator are connected to the two ends of the first resistance, one end of the first described resistance is connected with power input, the other end is connected on the source electrode of field effect transistor, the output of described comparator is connected on the grid of field effect transistor, described power boost circuit comprises transformer and triode, described transformer primary side and one end of secondary are all connected in the drain electrode of field effect transistor, the other end of described transformer primary side is connected on the collector electrode of triode and the positive pole of diode 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 ground capacity.
2. a kind of Simple electric source circuit according to claim 1, is characterized in that: the Standard resistance range of the first described resistance is 600 ohm-1000 ohm.
3. a kind of Simple electric source circuit according to claim 1, is characterized in that: described field effect transistor is PMOS.
4. a kind of Simple electric source circuit according to claim 1, is characterized in that: the ratio of described transformer primary side and secondary is 3:2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060263.6A CN104617789A (en) | 2015-02-05 | 2015-02-05 | Simple power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060263.6A CN104617789A (en) | 2015-02-05 | 2015-02-05 | Simple power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104617789A true CN104617789A (en) | 2015-05-13 |
Family
ID=53152114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510060263.6A Pending CN104617789A (en) | 2015-02-05 | 2015-02-05 | Simple power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104617789A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833226A (en) * | 2015-05-15 | 2015-08-12 | 成都中冶节能环保工程有限公司 | Alarm type coke oven waste heat recovery power generation system based on stabilized power supply circuit |
| CN104833221A (en) * | 2015-05-14 | 2015-08-12 | 成都中冶节能环保工程有限公司 | Protection type coke oven waste heat recovery power generation system based on boost power supply circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201556955U (en) * | 2009-12-02 | 2010-08-18 | 昆明理工大学 | Small-sized dual-energy power supply device for households |
| CN103227462A (en) * | 2013-05-15 | 2013-07-31 | 成都市宏山科技有限公司 | Surge protecting circuit for camera |
| CN204481699U (en) * | 2015-02-05 | 2015-07-15 | 成都市宏山科技有限公司 | The simple power circuit of a kind of structure |
-
2015
- 2015-02-05 CN CN201510060263.6A patent/CN104617789A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201556955U (en) * | 2009-12-02 | 2010-08-18 | 昆明理工大学 | Small-sized dual-energy power supply device for households |
| CN103227462A (en) * | 2013-05-15 | 2013-07-31 | 成都市宏山科技有限公司 | Surge protecting circuit for camera |
| CN204481699U (en) * | 2015-02-05 | 2015-07-15 | 成都市宏山科技有限公司 | The simple power circuit of a kind of structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833221A (en) * | 2015-05-14 | 2015-08-12 | 成都中冶节能环保工程有限公司 | Protection type coke oven waste heat recovery power generation system based on boost power supply circuit |
| CN104833226A (en) * | 2015-05-15 | 2015-08-12 | 成都中冶节能环保工程有限公司 | Alarm type coke oven waste heat recovery power generation system based on stabilized power supply circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104393760B (en) | The positive negative output low voltage difference with short-circuit protection function adjusts circuit | |
| CN204068678U (en) | A kind of Switching Power Supply output over-voltage protection and thermal-shutdown circuit | |
| CN108899876A (en) | The short circuit protection system at current detecting end in Switching Power Supply | |
| CN104617789A (en) | Simple power circuit | |
| CN203690888U (en) | Electric leakage protection plug | |
| CN204481699U (en) | The simple power circuit of a kind of structure | |
| CN204696664U (en) | The output overvoltage undervoltage protection device of DC-DC power source | |
| CN204481698U (en) | A kind of power circuit being applicable to compact electric apparatus | |
| CN208581162U (en) | A kind of current-limiting protection circuit and switching power circuit | |
| CN107404224B (en) | Crimping type IGBT converter valve low-voltage power supply device | |
| CN201788202U (en) | Electronic load circuit | |
| CN104836316B (en) | A kind of constant-current charging circuit of adjustable current | |
| CN204481677U (en) | A kind of power circuit | |
| CN103091543B (en) | Current detection circuit, constant current circuit and battery charging and discharging protective system | |
| CN206461340U (en) | A kind of DC over-voltage protection circuit | |
| CN203279303U (en) | A large-power LED driver and a boost converter protection circuit thereof | |
| CN201733130U (en) | Power supply management module circuit | |
| CN104793679A (en) | Programmable high-voltage source device | |
| CN104660067A (en) | Power supply circuit structure applicable to small-sized electrical appliances | |
| CN104811026A (en) | Switch power supply | |
| CN204615635U (en) | A kind of Switching Power Supply | |
| CN204681147U (en) | A kind of constant-current charging circuit of adjustable current | |
| CN109274064A (en) | A kind of power protecting circuit | |
| CN210898497U (en) | Boost output short-circuit protection circuit | |
| CN104617758A (en) | Power supply circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150513 |
|
| WD01 | Invention patent application deemed withdrawn after publication |