CN213753985U - Prevent circuit and electronic equipment of striking sparks - Google Patents
Prevent circuit and electronic equipment of striking sparks Download PDFInfo
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- CN213753985U CN213753985U CN202022616491.6U CN202022616491U CN213753985U CN 213753985 U CN213753985 U CN 213753985U CN 202022616491 U CN202022616491 U CN 202022616491U CN 213753985 U CN213753985 U CN 213753985U
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Abstract
The embodiment of the application provides a prevent circuit and electronic equipment of striking sparks, prevent circuit of striking sparks includes: the power supply device comprises a first resistor, a capacitor, a first voltage stabilizing diode and a power supply circuit, wherein one end of the first resistor is connected with the anode of the capacitor, the other end of the first resistor is used for connecting an adapter, the cathode of the capacitor is grounded, the cathode of the first voltage stabilizing diode is connected with the anode of the capacitor, the anode of the first voltage stabilizing diode is connected with the power supply circuit, the power supply circuit is connected with one end of the first resistor, and when the first voltage stabilizing diode has current, the power supply circuit is conducted to supply power to electronic equipment.
Description
Technical Field
The application relates to the technical field of electronic equipment, and relates to but is not limited to an anti-spark circuit and electronic equipment.
Background
Adopt the electronic equipment of external adapter, when the adapter connector lug inserts electronic equipment, there is the phenomenon of striking sparks usually, the reason that strikes sparks on the adapter generally all is that there is the capacitance device in the electronic equipment, when adapter and electronic equipment circular telegram in the twinkling of an eye, electric capacity can be rapidly charged in the electronic equipment, instantaneous current is very big, and the action of pegging graft this moment still is not accomplished, adapter connector and electrical apparatus are still in the virtual connection state, lead to adapter and electronic equipment's contact point to produce and draw the arc phenomenon, just can see the visible spark of naked eye, can produce certain potential safety hazard, give the unsafe experience of user.
Disclosure of Invention
To solve the problems, the application provides an ignition prevention circuit and an electronic device.
The application provides a prevent circuit of striking sparks, include: the power supply device comprises a first resistor, a capacitor, a first voltage stabilizing diode and a power supply circuit, wherein one end of the first resistor is connected with the anode of the capacitor, the other end of the first resistor is used for connecting an adapter, the cathode of the capacitor is grounded, the cathode of the first voltage stabilizing diode is connected with the anode of the capacitor, the anode of the first voltage stabilizing diode is connected with the power supply circuit, the power supply circuit is connected with one end of the first resistor, and when the first voltage stabilizing diode has current, the power supply circuit is conducted to supply power to electronic equipment.
In some embodiments, the anti-strike circuit further comprises:
and one end of the discharge circuit is connected with the anode of the capacitor, and the other end of the discharge circuit is connected with the cathode of the capacitor.
In some embodiments, the discharge circuit includes a diode and a second resistor, wherein an anode of the diode is connected to an anode of the capacitor, a cathode of the diode is connected to one end of the second resistor, and another end of the second resistor is connected to a cathode of the capacitor.
In some embodiments, the power supply circuit comprises: third resistance, field effect transistor, fourth resistance and triode, wherein, the one end of third resistance with the one end of first resistance the one end of field effect transistor is connected, the other end of third resistance with the one end of fourth resistance, the other end of field effect transistor are connected, the other end of fourth resistance with the collecting electrode of triode is connected, the base of triode with the positive pole of first zener diode is connected, the projecting pole ground connection of triode, field effect transistor is used for being connected with electronic equipment.
In some embodiments, the power supply circuit further comprises:
and one end of the third resistor is connected with the cathode of the second voltage-stabilizing diode, and the other end of the third resistor is connected with the anode of the second voltage-stabilizing diode.
In some embodiments, the transistor is an NPN transistor.
In some embodiments, the breakdown voltage of the first zener diode is 11V.
In some embodiments, the anti-strike circuit further comprises:
and the adapter connector is connected with the other end of the first resistor and is connected with the negative electrode of the capacitor, and the adapter connector is used for connecting an adapter.
In some embodiments, the breakdown voltage of the second zener diode is 11V.
An embodiment of the application provides an electronic device, which comprises any one of the above-mentioned anti-ignition circuits.
The application provides a pair of prevent circuit and electronic equipment of striking sparks, through setting up first resistance, the condenser, first zener diode and supply circuit, make when inserting the adapter, make the adapter charge for the condenser, when the both ends voltage of condenser reaches first zener diode's breakdown voltage, the overcurrent flows in the second zener diode, make supply circuit switch on, in order to supply power for electronic equipment, so, delay the time that the adapter charges for electrical apparatus inside, after the adapter is pegged graft completely with electrical apparatus, even the adapter charges for electrical apparatus inner capacitance, can avoid producing the arc that draws.
Drawings
The present application will be described in more detail below on the basis of embodiments and with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an anti-sparking circuit according to an embodiment of the present application.
Detailed Description
The following detailed description will be provided with reference to the accompanying drawings and embodiments, so that how to apply the technical means to solve the technical problems and achieve the corresponding technical effects can be fully understood and implemented. The embodiments and various features in the embodiments of the present application can be combined with each other without conflict, and the formed technical solutions are all within the scope of protection of the present application.
The application provides a prevent circuit of striking sparks, and figure 1 is the structure schematic diagram of a prevent circuit of striking sparks that this application embodiment provided, as shown in figure 1, includes: the electronic device comprises a first resistor R102, a capacitor C101, a first voltage stabilizing diode D102 and a power supply circuit, wherein one end of the first resistor R102 is connected with the anode of the capacitor C101, the other end of the first resistor R102 is used for being connected with an adapter, the cathode of the capacitor C101 is grounded, the cathode of the first voltage stabilizing diode D102 is connected with the anode of the capacitor C101, the anode of the first voltage stabilizing diode D102 is connected with the power supply circuit, the power supply circuit is connected with one end of the first resistor R102, and when the first voltage stabilizing diode D102 has current, the power supply circuit is conducted to supply power to the electronic device V1.
The utility model provides a prevent circuit of striking sparks, through setting up first resistance R102, condenser C101, first zener diode D102 and supply circuit, make when inserting the adapter, make the adapter charge for condenser C101, when condenser C101's both ends voltage reaches first zener diode D102's breakdown voltage, current flows in second zener diode D102, make supply circuit switch on, in order to supply power for electronic equipment V1, thus, delay the adapter and give the inside time of charging of electronic equipment V1, after the adapter is pegged graft completely with electronic equipment, even the adapter charges for electrical apparatus internal capacitance, can not produce and draw the arc.
In some embodiments, the anti-strike circuit further comprises: a discharge circuit; one end of the discharge circuit is connected to the positive electrode of the capacitor C101, and the other end of the discharge circuit is connected to the negative electrode of the capacitor C101.
In some embodiments, the discharge circuit includes a diode D101 and a second resistor R101, wherein an anode of the diode D101 is connected to an anode of the capacitor C101, a cathode of the diode D101 is connected to one end of the second resistor R101, and another end of the second resistor R101 is connected to a cathode of the capacitor C101.
In the embodiment of the present application, the second resistor R101 provides a discharge path for the capacitor C101. When the electronic device is pulled out of the adapter, the positive electrode of the capacitor C101 forms a path through the diode D101, the second resistor R101 and the negative electrode of the capacitor C101, and the capacitor C101 is discharged quickly. The capacitor C101 is prevented from discharging when the adapter is pulled out and then inserted back quickly, no buffering time exists, the adapter quickly supplies power to the electronic equipment V1, and arcing and sparks are generated.
In some embodiments, the power supply circuit comprises: the voltage regulator comprises a third resistor R104, a field effect transistor Q102, a fourth resistor R103 and a triode Q101, wherein one end of the third resistor R104 is connected with one end of the first resistor R102 and one end of the field effect transistor Q102, the other end of the third resistor R104 is connected with one end of the fourth resistor R103 and the other end of the field effect transistor Q102, the other end of the fourth resistor R103 is connected with a collector of the triode Q101, a base of the triode Q101 is connected with an anode of the first voltage stabilizing diode D102, an emitter of the triode Q101 is grounded, and the field effect transistor Q102 is used for being connected with an electronic device V1.
When the adapter connector V101 is plugged into the adapter, current charges the capacitor C101 through the first resistor R102, and after the capacitor C101 is charged for a period of time and the voltage reaches the breakdown voltage of the first voltage stabilizing diode D102, current flows through the base electrode-emitter electrode of the triode Q101 at the moment, and the collector electrode-emitter electrode of the triode Q101 is conducted. The current of the adapter forms a path through the third resistor R104, the fourth resistor R103 and the transistor Q101. At this time, the voltage difference between the gate and the source of the PMOS transistor of the field effect transistor Q102 is the voltage between the two ends of the third resistor R104, and the resistances of the third resistor R104 and the fourth resistor R103 are set to obtain the voltage of the third resistor R104 (adapter voltage-adapter voltage R103/(R103+ R104)), that is, the on-state voltage required by the voltage difference between the two ends of the gate and the source of the PMOS transistor of the field effect transistor Q102. When the voltage difference between the grid electrode and the source electrode of the field effect transistor Q102 reaches the conducting voltage of the field effect transistor Q102, the field effect transistor Q102 is conducted, at the moment, the electricity of the adapter is connected with the electronic device V1 through the adapter connector V101 and the field effect transistor Q102, and at the moment, the electricity of the adapter really supplies power to the electronic device V1.
In some embodiments, the power supply circuit further comprises:
and one end of the third resistor R104 is connected to the cathode of the second zener diode D103, and the other end of the third resistor R104 is connected to the anode of the second zener diode D103.
In the embodiment of the present application, the second zener diode D103 is for protecting the gate-source voltage of the field effect transistor Q102, and performs a clamping function. Such as an 11V regulator, the gate-source voltage will not exceed 11V. Here D103 may also be removed.
In some embodiments, the transistor Q101 is an NPN transistor.
In some embodiments, the breakdown voltage of the first zener diode D102 is 11V.
In some embodiments, the anti-strike circuit further comprises:
and an adapter terminal V1 connected to the other end of the first resistor R102 and to the negative electrode of the capacitor C101, wherein the adapter terminal V1 is used for connecting an adapter.
In some embodiments, the breakdown voltage of the second zener diode D103 is 11V.
An embodiment of the application provides an electronic device, which comprises any one of the above-mentioned anti-ignition circuits.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present application may be integrated into one second processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Claims (10)
1. An anti-sparking circuit, comprising: the power supply device comprises a first resistor, a capacitor, a first voltage stabilizing diode and a power supply circuit, wherein one end of the first resistor is connected with the anode of the capacitor, the other end of the first resistor is used for connecting an adapter, the cathode of the capacitor is grounded, the cathode of the first voltage stabilizing diode is connected with the anode of the capacitor, the anode of the first voltage stabilizing diode is connected with the power supply circuit, the power supply circuit is connected with one end of the first resistor, and when the first voltage stabilizing diode has current, the power supply circuit is conducted to supply power to electronic equipment.
2. The anti-strike circuit of claim 1, further comprising:
and one end of the discharge circuit is connected with the anode of the capacitor, and the other end of the discharge circuit is connected with the cathode of the capacitor.
3. The anti-sparking circuit according to claim 2, wherein the discharge circuit includes a diode and a second resistor, wherein an anode of the diode is connected to an anode of the capacitor, a cathode of the diode is connected to one end of the second resistor, and the other end of the second resistor is connected to a cathode of the capacitor.
4. The anti-sparking circuit of claim 1, wherein the power supply circuit includes: third resistance, field effect transistor, fourth resistance and triode, wherein, the one end of third resistance with the one end of first resistance the one end of field effect transistor is connected, the other end of third resistance with the one end of fourth resistance, the other end of field effect transistor are connected, the other end of fourth resistance with the collecting electrode of triode is connected, the base of triode with the positive pole of first zener diode is connected, the projecting pole ground connection of triode, field effect transistor is used for being connected with electronic equipment.
5. The anti-strike circuit of claim 4, wherein the power supply circuit further comprises:
and one end of the third resistor is connected with the cathode of the second voltage-stabilizing diode, and the other end of the third resistor is connected with the anode of the second voltage-stabilizing diode.
6. The anti-sparking circuit according to claim 4, characterized in that the transistor is an NPN-type transistor.
7. The anti-sparking circuit of claim 1, wherein the breakdown voltage of the first zener diode is 11V.
8. The anti-strike circuit of claim 1, further comprising:
and the adapter connector is connected with the other end of the first resistor and is connected with the negative electrode of the capacitor, and the adapter connector is used for connecting an adapter.
9. The anti-sparking circuit of claim 5, wherein the breakdown voltage of the second zener diode is 11V.
10. An electronic device characterized by comprising the ignition prevention circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022616491.6U CN213753985U (en) | 2020-11-12 | 2020-11-12 | Prevent circuit and electronic equipment of striking sparks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022616491.6U CN213753985U (en) | 2020-11-12 | 2020-11-12 | Prevent circuit and electronic equipment of striking sparks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213753985U true CN213753985U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022616491.6U Active CN213753985U (en) | 2020-11-12 | 2020-11-12 | Prevent circuit and electronic equipment of striking sparks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213753985U (en) |
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2020
- 2020-11-12 CN CN202022616491.6U patent/CN213753985U/en active Active
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