CN216528515U - Hot plug-in card formula integrated circuit board spark arrester - Google Patents
Hot plug-in card formula integrated circuit board spark arrester Download PDFInfo
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- CN216528515U CN216528515U CN202123153478.2U CN202123153478U CN216528515U CN 216528515 U CN216528515 U CN 216528515U CN 202123153478 U CN202123153478 U CN 202123153478U CN 216528515 U CN216528515 U CN 216528515U
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- 230000003139 buffering effect Effects 0.000 claims abstract description 35
- 239000003990 capacitor Substances 0.000 claims description 26
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010931 gold Substances 0.000 abstract description 2
- 229910052737 gold Inorganic materials 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Abstract
The utility model discloses a hot-plug card-in type board spark eliminating device, which comprises a first delay control module, an input relay, a second delay control module, an NTC buffering module and an NTC buffering short-circuit module, wherein a coil of the input relay and the input end of the second delay control module are connected with the output end of the first delay control module, the input end of the input relay is externally connected with a power supply, a normally open contact of the input relay is connected with the input end of the NTC buffering module, the output end of the second delay control module and the output end of the NTC buffering short-circuit module are connected with the input end of the NTC buffering short-circuit module, the output end of the NTC buffering short-circuit module is externally connected with an electric load, in the utility model, the input relay is controlled to be closed in a time-delay way through the first time-delay control module, and the electric load is buffered and electrified through the NTC buffer module, the problem that a gold finger is burnt and a relay is closed to ablate a contact is solved by the phenomenon of sparking when a board card is plugged in and out in a live-line mode.
Description
Technical Field
The utility model relates to the technical field of hot plug card type board card circuits, in particular to a hot plug card type board card spark extinguishing device.
Background
Aiming at the problems that when the existing high-low voltage power supply card board is plugged in and pulled out in a hot-plug mode, sparks are generated as long as a capacitor is directly connected with an input, and the phenomena of sparks are more obvious as the power supply voltage rises and the capacitor increases, so that golden fingers or contact points are burnt; or the contact of the relay is ablated when the relay is closed after the relay is simply delayed, so that the two hidden dangers are eliminated by hot plugging the plug-in card type board spark eliminating circuit.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a hot plug-in card type board spark extinguishing device which can solve the problem that a golden finger and a relay of a hot plug-in card type board are easily damaged by capacitive load.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a hot plug-in card type board spark arrester comprises a first delay control module, an input relay, a second delay control module, an NTC buffer module and an NTC buffer short-circuit module, wherein the input relay comprises a first coil and a normally open contact, the input ends of the first coil and the second delay control module are connected with the output end of the first delay control module, the input end of the input relay is externally connected with a power supply, the normally open contact of the input relay is connected with the input end of the NTC buffer module, the output end of the second delay control module and the output end of the NTC buffer module are both connected with the input end of the NTC buffer short-circuit module, and the output end of the NTC buffer short-circuit module is externally connected with an electric load;
the first delay control module is used for controlling the input relay to be closed in a delay way;
the NTC buffering module is used for buffering and electrifying the electric load;
the second delay control module is used for driving the NTC buffering module to be in one of a first state and a second state through the NTC buffering short-circuit module;
the NTC buffer module is connected in series between the input relay and the electric load in the first state;
and the second state is that the NTC buffer module is in short circuit between the input relay and the electric load.
Preferably, the first delay control module includes a resistor R1, a resistor R2, a resistor R5, a resistor R6, a capacitor C3, a diode D1, a diode D2, a zener diode DZ1, a transistor Q1 and a transistor Q2, one end of the resistor R1, one end of the resistor R2, the cathode of the diode D1 and the cathode of the diode D2 are all externally connected with a control power supply, the other end of the resistor R1, one end of the resistor R5, the anode of the diode D1 and one end of the capacitor C3 are all connected with the base of the transistor Q1, the other end of the resistor R2 is connected with the collector of the transistor Q1, the emitter of the transistor Q1 is connected with the cathode of the zener diode, the anode of the zener diode and one end of the resistor R6 are all connected with the base of the transistor Q2, one end of the input relay, the anode of the diode D2 and the input end of the second delay control module Q2 are all connected with the collector of the transistor Q2, the cathode of the diode D2 is connected with the other end of the first coil, and the other end of the resistor R5, the other end of the capacitor C3, the other end of the resistor R6 and the emitter of the triode Q2 are all grounded.
Preferably, the second delay control module comprises a resistor R3, a resistor R4, a resistor R8, a resistor R9, a resistor R10, a capacitor C4, a diode D4, a zener diode DZ2, a transistor Q3, a transistor Q4 and a transistor Q5, the output end of the first delay control module is connected with the base of the transistor Q5 through a resistor R10, one end of the resistor R4, one end of the resistor R3 and the cathode of the diode D4 are all externally connected with a control power supply, the anode of the diode D4, the other end of the resistor R4, one end of the resistor R8, one end of the capacitor C4 and the base of the transistor Q4 are all connected with the collector of the transistor Q5, the other end of the resistor R3 is connected with the collector of the transistor Q4, the emitter of the transistor Q4 is connected with the cathode of the zener diode DZ2, the anode of the zener diode DZ2 and one end of the resistor R9 are both connected with the base of the transistor Q3, the collector of the triode Q3 is connected with the input end of the NTC buffering short-circuit module, and the emitter of the triode Q3, the emitter of the triode Q5, the other end of the resistor R8 and the other end of the resistor R9, namely the other end of the capacitor C4, are all grounded.
Preferably, the NTC buffer module includes an NTC thermistor, and the normally open contact of the input relay is connected to the input end of the NTC buffer shorting module through the NTC thermistor.
Preferably, NTC buffering short circuit module includes buffer relay and diode D3, buffer relay includes normally open contact, normally closed contact and second coil, NTC buffer module's output is connected with buffer relay's normally closed contact, NTC buffer module's input is connected with buffer relay's normally open contact, buffer relay's the external power consumption load of output, the one end of second coil and the negative pole of diode are all external to have control power supply, buffer relay's the other end of second coil and the positive pole of diode all are connected with second time delay control module's output.
Preferably, the input relay and the buffer relay are both duplex relays.
Compared with the prior art, the utility model has the beneficial effects that: through the closure of first time delay control module time delay control input relay, and cushion through NTC buffering module and go up the electricity to power consumption load, produce the problem that the phenomenon of striking sparks burns out golden finger and relay closure ablation contact when taking the electric mortiser to pull out the integrated circuit board, furthermore, second time delay control module orders about NTC buffering module short circuit through NTC buffering short circuit module, so that become direct switch-on state between input relay directness and the power consumption load and reduce the loss of NTC buffering module, improve product safety, reduce the product fault rate.
Drawings
Fig. 1 is a circuit diagram of a hot-plug card type board spark extinguishing device according to the present invention.
Fig. 2 is a circuit diagram of a first delay control module according to the present invention.
Fig. 3 is a circuit diagram of a second delay control module according to the present invention.
Fig. 4 is a circuit diagram of an NTC buffer module according to the present invention.
Fig. 5 is a circuit diagram of an NTC buffer shorting module according to the present invention.
Fig. 6 is a schematic structural diagram of the hot-plug card type board spark extinguishing device according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model is further described with reference to the following drawings and detailed description:
as shown in fig. 1-6, a hot-plug card type board spark extinguishing device is characterized in that: the input end of a first coil of the input relay and the input end of a second delay control module are connected with the output end of the first delay control module, the input end of the input relay is externally connected with a power supply, a normally open contact of the input relay is connected with the input end of the NTC buffer module, the output end of the second delay control module and the output end of the NTC buffer module are connected with the input end of the NTC buffer short-circuit module, and the output end of the NTC buffer short-circuit module is externally connected with an electric load;
the first delay control module is used for controlling the input relay to be closed in a delay way;
the NTC buffering module is used for buffering and electrifying the electric load;
the second delay control module is used for driving the NTC buffering module to be in one of a first state and a second state through the NTC buffering short-circuit module;
the NTC buffer module is connected in series between the input relay and the electric load in the first state;
and the second state is that the NTC buffer module is in short circuit between the input relay and the electric load.
Specifically, the input relay is connected with an external slot power supply device (power input slot) to serve as a main power supply control circuit of the board card, and the first delay control module serves as a starting control circuit and is used for starting the whole circuit and driving the input relay to act; the second delay control module is used for driving a buffer relay in the NTC buffer short-circuit module to act; the NTC buffer module is used for buffering the input relay current and avoiding burning the input relay contact.
Preferably, the input relay and the buffer relay are both dual relays, specifically, the input relay includes a switch JK1A, a switch JK1B and a first coil, an armature of the switch JK1A and an armature of the switch JK1B are controlled by the same first coil, an input end of the switch JK1A and an input end of the switch JK1B are both connected with an external slot power supply (device), wherein an input end of the switch JK1A is connected with a positive electrode of the external slot power supply, an input end of the switch JK1B is connected with a negative electrode of the external slot power supply, the buffer relay includes a switch JK2A, a switch JK2B and a second coil, an armature of the switch JK2A and an armature of the switch JK2B are both controlled by the same second coil, preferably, the NTC buffer module includes an NTC thermistor RT1 and an NTC thermistor RT2, a normally closed contact of the switch JK2A is connected with a normally open contact of the switch JK1A through a normally closed thermistor 1, the normally closed contact of switch JK2B passes through NTC thermistor RT2 and is connected with the normally open contact of switch JK2B, and the normally open contact of switch JK2A is direct to be connected with the normally open contact of switch JK1A simultaneously, and the normally open contact of switch JK2B is direct to be connected with the normally open contact of switch JK1B, the output of switch JK2A is connected with electric load's positive pole, and switch JK 2B's output is connected with electric load's negative pole.
Preferably, the first delay control module includes a resistor R1, a resistor R2, a resistor R5, a resistor R6, a capacitor C3, a diode D1, a diode D2, a zener diode DZ1, a transistor Q1, and a transistor Q2, one end of the resistor R1, one end of the resistor R2, a cathode of the diode D1, and a cathode of the diode D2 are externally connected with a control power supply, the other end of the resistor R1, one end of the resistor R5, an anode of the diode D1, and one end of the capacitor C3 are connected with a base of the transistor Q1, the other end of the resistor R2 is connected with a collector of the transistor Q1, an emitter of the transistor Q1 is connected with a cathode of the zener diode, an anode of the zener diode and one end of the resistor R6 are connected with a base of the transistor Q2, one end of the first coil of the input relay, an anode of the diode D2, and an input end of the second delay control module are connected with a collector of the transistor Q2, the negative electrode of the diode D2 is connected with the other end of the first coil of the input relay, and the other end of the resistor R5, the other end of the capacitor C3, the other end of the resistor R6 and the emitter of the triode Q2 are all grounded. In this embodiment, when the electronic board is inserted, the input relay cannot be attracted due to the existence of the first delay control module, the main power supply circuit is in an open circuit state, so that a gold finger and a contact of the slot cannot be prevented from generating sparks, the capacitor C3 is charged by the resistor R1 after the first delay control module is connected into the slot, the diode D1 is in a cut-off state, the resistor R6 is pulled down to the ground to prevent an interference signal from triggering the triode Q1 by mistake, and because the resistor R1 has a large resistance and a low power supply voltage, the current is very weak, and the contact cannot generate sparks; after the voltage of the capacitor C3 is charged to make the voltage of the base electrode and the emitter electrode of the triode Q1 positively bias to about 0.7V, the triode Q1 is conducted, the voltage of the emitter electrode of the triode Q1 can be increased by the voltage stabilizing diode DZ1, the charging conduction voltage of the triode Q1 is about 5.8V, and the anti-interference capability of the triode Q2 is improved by the resistor R6; after the triode Q1 is conducted, the current is limited through the resistor R2, the triode Q2 is conducted, the input relay is closed after the triode Q2 is conducted, and the diode D2 has the effect that a freewheeling loop is formed in reverse induced voltage at the moment of disconnection of the input relay, so that the triode Q2 is prevented from being damaged by surge voltage. When the power supply of +12V (namely the control power supply) is gradually reduced during power failure, the diode D1 provides a quick discharge path for the capacitor C3, so that a delay control module quickly completes initialization for next power-on spark elimination and prepares for next power-on.
Preferably, the second delay control module comprises a resistor R3, a resistor R4, a resistor R8, a resistor R9, a resistor R10, a capacitor C4, a diode D4, a zener diode DZ2, a transistor Q3, a transistor Q4 and a transistor Q5, the output end of the first delay control module is connected with the base of the transistor Q5 through a resistor R10, one end of the resistor R4, one end of the resistor R3 and the cathode of the diode D4 are all externally connected with a control power supply, the anode of the diode D4, the other end of the resistor R4, one end of the resistor R8, one end of the capacitor C4 and the base of the transistor Q4 are all connected with the collector of the transistor Q5, the other end of the resistor R3 is connected with the collector of the transistor Q4, the emitter of the transistor Q4 is connected with the cathode of the zener diode DZ2, the anode of the zener diode DZ2 and one end of the resistor R9 are both connected with the base of the transistor Q3, the collector of the triode Q3 is connected with the input end of the NTC buffering short-circuit module, and the emitter of the triode Q3, the emitter of the triode Q5, the other end of the resistor R8 and the other end of the resistor R9, namely the other end of the capacitor C4, are all grounded. In this embodiment, after the transistor Q2 is turned on and the input relay is pulled in, the collector of the transistor Q2 becomes low level, so that the transistor Q5 changes from a conducting state to an intercepting state, at this time, the +12V charges the capacitor C4 through the resistor R4, the diode D4 is in the intercepting state, the resistor R8 is pulled down to the ground to prevent an interference signal from falsely triggering the transistor Q4, after the voltage of the capacitor C4 is charged, the voltage of the base and the emitter of the transistor Q4 is positively biased to about 0.7V, the transistor Q4 is turned on, the voltage stabilizing diode DZ2 can increase the emitter voltage of the transistor Q4, so that the charging conducting voltage of the transistor Q4 is about 5.8V, and the resistor R9 increases the anti-interference capability of the transistor Q3; triode Q4 switches on the back and makes triode Q3 switch on through resistance R3 current-limiting, and the buffer relay of NTC buffering short circuit module is closed after triode Q3 switches on, and diode D3's effect has a freewheel loop in the reverse sense voltage that input relay disconnection is in the twinkling of an eye, avoids surge voltage to damage triode Q3. When the power supply of +12V is gradually reduced in the power failure, the diode D4 provides a quick discharge path for the capacitor C4, so that the second delay control module quickly completes initialization for next power-on spark elimination and prepares for next power-on.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a hot plug-in card formula integrated circuit board spark extinguishing device which characterized in that: the input relay comprises a first delay control module, an input relay, a second delay control module, an NTC buffering module and an NTC buffering short-circuit module, wherein the input relay comprises a first coil and a normally open contact, the input ends of the first coil and the second delay control module are connected with the output end of the first delay control module, the input end of the input relay is externally connected with a power supply, the normally open contact of the input relay is connected with the input end of the NTC buffering module, the output end of the second delay control module and the output end of the NTC buffering module are connected with the input end of the NTC buffering short-circuit module, and the output end of the NTC buffering short-circuit module is externally connected with an electric load;
the first delay control module is used for controlling the input relay to be closed in a delay way;
the NTC buffer module is used for buffering and electrifying the electric load;
the second delay control module is used for driving the NTC buffering module to be in one of a first state and a second state through the NTC buffering short-circuit module;
the NTC buffer module is connected in series between the input relay and the electric load in the first state;
and the second state is that the NTC buffer module is in short circuit between the input relay and the electric load.
2. A hot-plug card-inserted board spark-extinguishing device as claimed in claim 1, wherein: the first delay control module comprises a resistor R1, a resistor R2, a resistor R5, a resistor R6, a capacitor C3, a diode D1, a diode D2, a zener diode DZ1, a triode Q1 and a triode Q2, wherein one end of the resistor R1, one end of the resistor R2, the cathode of the diode D1 and the cathode of the diode D2 are all externally connected with a control power supply, the other end of the resistor R1, one end of the resistor R5, the anode of the diode D1 and one end of the capacitor C3 are all connected with the base of the triode Q1, the other end of the resistor R2 is connected with the collector of the triode Q1, the emitter of the triode Q1 is connected with the cathode of the zener diode, the anode of the zener diode and one end of the resistor R6 are all connected with the base of the triode Q2, one end of the first coil of the input relay, the anode of the diode D2 and the collector of the second delay control module are all connected with the collector of the Q2, the cathode of the diode D2 is connected with the other end of the first coil, and the other end of the resistor R5, the other end of the capacitor C3, the other end of the resistor R6 and the emitter of the triode Q2 are all grounded.
3. A hot-plug card-inserted board spark-extinguishing device as claimed in claim 1, wherein: the second delay control module comprises a resistor R3, a resistor R4, a resistor R8, a resistor R9, a resistor R10, a capacitor C4, a diode D4, a zener diode DZ2, a transistor Q3, a transistor Q4 and a transistor Q4, the output end of the first delay control module is connected with the base of the transistor Q4 through a resistor R4, one end of the resistor R4 and the negative electrode of the diode D4 are all externally connected with a control power supply, the anode of the diode D4, the other end of the resistor R4, one end of the capacitor C4 and the base of the transistor Q4 are all connected with the collector electrode of the transistor Q4, the other end of the resistor R4 is connected with the collector electrode of the transistor Q4, the emitter electrode of the transistor Q4 is connected with the cathode of the zener diode DZ 4, the anode of the zener diode DZ 4 and one end of the resistor R4 are both connected with the collector electrode of the transistor Q4, and the collector electrode of the base of the transistor Q4 are connected with the NTC 4, and the collector electrode of the NTC 4 is connected with the input end of the input terminal of the buffer module, the emitter of the triode Q3, the emitter of the triode Q5, the other end of the resistor R8 and the other end of the resistor R9, and the other end of the capacitor C4 are all grounded.
4. A hot-plug card-inserted board spark-extinguishing device as claimed in claim 1, wherein: the NTC buffering module comprises an NTC thermistor, and a normally open contact of the input relay is connected with the input end of the NTC buffering short-circuit module through the NTC thermistor.
5. A hot-plug card-inserted board spark-extinguishing device as claimed in claim 1, wherein: NTC buffering short circuit module includes buffer relay and diode D3, buffer relay includes normally open contact, normally closed contact and second coil, NTC buffer module's output and buffer relay's normally closed contact are connected, NTC buffer module's input and buffer relay's normally open contact are connected, buffer relay's the external power consumption load of output, the one end of second coil and the negative pole of diode are all external to have control power, buffer relay's the other end of second coil and the positive pole of diode all are connected with second time delay control module's output.
6. The hot plug card type board spark extinguishing apparatus according to claim 5, wherein: the input relay and the buffer relay are both duplex relays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123153478.2U CN216528515U (en) | 2021-12-14 | 2021-12-14 | Hot plug-in card formula integrated circuit board spark arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123153478.2U CN216528515U (en) | 2021-12-14 | 2021-12-14 | Hot plug-in card formula integrated circuit board spark arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216528515U true CN216528515U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123153478.2U Active CN216528515U (en) | 2021-12-14 | 2021-12-14 | Hot plug-in card formula integrated circuit board spark arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216528515U (en) |
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2021
- 2021-12-14 CN CN202123153478.2U patent/CN216528515U/en active Active
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Address after: No. 56 Nanli East Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangdong Baolun Electronics Co.,Ltd. Address before: No.19 Chuangyuan Road, Zhongcun street, Panyu District, Guangzhou, Guangdong 510000 Patentee before: GUANGZHOU ITC ELECTRONIC TECHNOLOGY Co.,Ltd. |
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