CN203180763U - A charging and discharging circuit used at the input end of the primary coil of a boosting transformer - Google Patents
A charging and discharging circuit used at the input end of the primary coil of a boosting transformer Download PDFInfo
- Publication number
- CN203180763U CN203180763U CN 201320141562 CN201320141562U CN203180763U CN 203180763 U CN203180763 U CN 203180763U CN 201320141562 CN201320141562 CN 201320141562 CN 201320141562 U CN201320141562 U CN 201320141562U CN 203180763 U CN203180763 U CN 203180763U
- Authority
- CN
- China
- Prior art keywords
- charging
- discharging circuit
- primary coil
- capacitors
- effect transistor
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a charging and discharging circuit used at the input end of the primary coil of a boosting transformer. The main technical characteristics are that the charging and discharging circuit comprises a field effect transistor and multiple capacitors, that the multiple capacitors are connected together in parallel, that one ends of the multiple capacitors and the drain electrode D of the field effect transistor are connected with the input end of the primary coil of the boosting transformer together, and that the other end of the multiple capacitors and the source electrode S of the field effect transistor is connected with ground together. The charging and discharging circuit has reasonable design and replaces a 473 capacitor with three 153 capacitors connected in parallel. As a result, even though a capacitor generates a case of circuit break failure, the function of the whole charging and discharging circuit is not influenced heavily and cases of increased current and abnormal heating of other devices does not generate. Therefore, the security and reliability of the charging and discharging circuit is increased and the safe use of household electrical appliances is guaranteed.
Description
Technical field
The utility model belongs to and discharges and recharges technical field, especially a kind of charge-discharge circuit that is applied to step-up transformer primary coil input.
Background technology
In the household electrical appliance series products, the charge-discharge circuit that is arranged on step-up transformer primary coil input is made of field effect transistor and capacitor usually.In this charge-discharge circuit, capacitor adopts the capacitor of a larger capacity usually, for example, adopt 473 capacitors, the problem of its existence is: in case 473 capacitors lost efficacy and to open circuit, then can make the electric current of field effect transistor increase heating and puncture, and then cause step-up transformer T1 primary current to increase and generate heat, finally cause turn-to-turn short circuit unusual, there is great potential safety hazard in this for the family expenses electric appliances.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of reasonable in design, stable and reliable for performance and can guarantee the charge-discharge circuit that is applied to step-up transformer primary coil input of household electrical appliance safety.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of charge-discharge circuit that is applied to step-up transformer primary coil input, comprise field effect transistor and a plurality of capacitor, a plurality of capacitors are connected in parallel, and an end of a plurality of capacitors and the drain D of field effect transistor are linked into the input of step-up transformer primary coil, the source S common ground of the other end of a plurality of capacitors and field effect transistor jointly.
And described field effect transistor is IRF530, and described capacitor is 153 capacitors.
And the quantity of described capacitor is three.
Advantage of the present utility model and good effect are:
The utility model is reasonable in design, adopt three 153 capacitor parallel waies to replace 473 capacitors, even the situation that certain capacitor opens circuit and lost efficacy, function for the whole charging and discharging circuit can not have much impact, the situation that other device current increase, device abnormal heating also can not occur, improve fail safe and the reliability of charge-discharge circuit, guaranteed the safe handling of household electrical appliance.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is further described:
A kind of charge-discharge circuit that is applied to step-up transformer primary coil input, as shown in Figure 1, comprise field effect transistor IRF530 and three 153 capacitors, three 153 capacitors are connected in parallel, and an end of three 153 capacitors and the drain D of field effect transistor IRF530 are linked into the input of step-up transformer primary coil, the source S common ground of the other end of three 153 capacitors and field effect transistor IRF530 jointly.Three 153 capacitor parallel waies of this employing replace 473 capacitors, can avoid effectively opening circuit because of the inefficacy of 473 capacitors, cause field effect transistor breakdown and cause unusual problem such as turn-to-turn short circuit.Its design principle is: the situation that certain capacitor in three 153 capacitors opens circuit and lost efficacy, can not have a significant impact for discharging and recharging function yet, and can not cause other device current unusual.
It is emphasized that; embodiment described in the utility model is illustrative; rather than it is determinate; therefore the utility model is not limited to the embodiment described in the embodiment; every by those skilled in the art according to other execution modes that the technical solution of the utility model draws, belong to the scope of the utility model protection equally.
Claims (3)
1. charge-discharge circuit that is applied to step-up transformer primary coil input, it is characterized in that: comprise field effect transistor and a plurality of capacitor, a plurality of capacitors are connected in parallel, and an end of a plurality of capacitors and the drain D of field effect transistor are linked into the input of step-up transformer primary coil, the source S common ground of the other end of a plurality of capacitors and field effect transistor jointly.
2. a kind of charge-discharge circuit that is applied to step-up transformer primary coil input according to claim 1, it is characterized in that: described field effect transistor is IRF530, described capacitor is 153 capacitors.
3. a kind of charge-discharge circuit that is applied to step-up transformer primary coil input according to claim 1, it is characterized in that: the quantity of described capacitor is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141562 CN203180763U (en) | 2013-03-26 | 2013-03-26 | A charging and discharging circuit used at the input end of the primary coil of a boosting transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141562 CN203180763U (en) | 2013-03-26 | 2013-03-26 | A charging and discharging circuit used at the input end of the primary coil of a boosting transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203180763U true CN203180763U (en) | 2013-09-04 |
Family
ID=49077418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320141562 Expired - Lifetime CN203180763U (en) | 2013-03-26 | 2013-03-26 | A charging and discharging circuit used at the input end of the primary coil of a boosting transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203180763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111508417A (en) * | 2020-05-06 | 2020-08-07 | Tcl华星光电技术有限公司 | GOA circuit |
-
2013
- 2013-03-26 CN CN 201320141562 patent/CN203180763U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111508417A (en) * | 2020-05-06 | 2020-08-07 | Tcl华星光电技术有限公司 | GOA circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203574534U (en) | Surge current suppressing circuit | |
| CN203827170U (en) | Circuit device possessing frequency transformer soft startup circuit and energy consumption braking circuit | |
| CN204012694U (en) | Anti-lightning surge protection circuit and anti-lightning power supply adaptor | |
| CN204046411U (en) | Be applicable to single normal shock absorbing circuit of middle low power modular power source | |
| CN203180763U (en) | A charging and discharging circuit used at the input end of the primary coil of a boosting transformer | |
| CN206401593U (en) | Electromagnetism plug and magnetic socket | |
| CN203071869U (en) | Oscillator circuit | |
| CN202616142U (en) | Relay control circuit | |
| CN103687118B (en) | IGBT drive circuit, electromagnetic induction heating device and method thereof | |
| CN202564031U (en) | High-tension transformer of micro-wave oven | |
| CN206293887U (en) | A kind of relay contact anti-surge protection circuit | |
| CN205069383U (en) | Explosion -proof capacitor | |
| CN104122968A (en) | Quick discharging device | |
| CN203674737U (en) | Discharge protection device and battery management system thereof | |
| CN203708096U (en) | Power supply protection circuit and power supply | |
| CN206237300U (en) | Switching power circuit | |
| CN205453259U (en) | Use and prevent surge charging circuit on high -frequency transformer | |
| CN204145287U (en) | A kind of protective circuit of switch power source | |
| CN203839621U (en) | Non-contact type safety socket in direct current power distribution network | |
| CN203839998U (en) | Battery charging reverse-connection protecting circuit | |
| CN204304522U (en) | farad capacitor charge and discharge protector in parallel | |
| CN204067886U (en) | Switch cubicle rectifier bridge | |
| CN204031536U (en) | A kind of LED protective circuit | |
| CN203027130U (en) | Circuit for reducing voltage stress of switching power supply MOS (Metal Oxide Semiconductor) tube | |
| CN203192602U (en) | Guide pin sleeve for cylindrical supercapacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |