CN2348513Y - Shockproof power supply protector for microelectronic equipment - Google Patents
Shockproof power supply protector for microelectronic equipment Download PDFInfo
- Publication number
- CN2348513Y CN2348513Y CN 98242469 CN98242469U CN2348513Y CN 2348513 Y CN2348513 Y CN 2348513Y CN 98242469 CN98242469 CN 98242469 CN 98242469 U CN98242469 U CN 98242469U CN 2348513 Y CN2348513 Y CN 2348513Y
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- CN
- China
- Prior art keywords
- limiting circuit
- pressure limiting
- power supply
- input
- piezo
- 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 - Fee Related
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Abstract
The utility model relates to a shockproof power supply protector for microelectronic equipment. The power supply protector comprises a shell body; a primary pressure limiting circuit and a secondary pressure limiting circuit are arranged in the shell body; the input end of the primary pressure limiting circuit is connected in series with a tmperature fuse; a choke coil is connected in series between the primary pressure limiting circuit and the secondary pressure limiting circuit. The primary pressure limiting circuit, the secondary pressure limiting circuit and the choke coil are all connected in series in a power supply circuit. The waveform of the output voltage is smooth; the rising gradient is small. The utility model can suppress the electromagnetic induction voltage caused by output voltage, and ensure electric equipment to be kept in normal working voltage when no lightning current invades.
Description
The utility model relates to power supply protector, particularly the anti-lightning strike power supply protector of microelectronic device such as electronic computer, power department complex automatic system.
At present, both at home and abroad the anti-lightning strike power supply protector of microelectronic device adopts shunting, filtering, shielding, clamper, equal principles such as pressure mostly.Because microelectronic device has used a large amount of integrated packages, comprises extensive integrated package, and the antijamming capability of equipment is reduced greatly, and thunderbolt or the caused surge voltage energy of line loop operation are bigger, and the clamp voltage of claimed element is low, and discharge capacity is big.Existing clamper element has: piezo-resistance, gas discharge tube, transient state diode, solid discharging tube, Zener diode, wherein, the discharge capacity of piezo-resistance and gas discharge tube is big, but clamp voltage is higher, is difficult to match with the withstand voltage level of microelectronic device.And the clamp voltage of transient state diode, solid discharging tube, Zener diode is low, but discharge capacity is little, is unable to undergo the impact of big electric current.For realizing the protection to microelectronic device, existing anti-lightning strike power supply protector all adopts multiple element both at home and abroad, makes multi-level pmultistage circuit, and they are replenished mutually, has complementary advantages.Its sets of lines becomes: contain elementary pressure limiting circuit and secondary voltage limiting circuit; fuse of input series connection of elementary pressure limiting circuit; string has isolated components such as resistance or single inductance coil between elementary pressure limiting circuit and the secondary voltage limiting circuit; elementary pressure limiting circuit and secondary voltage limiting circuit all are connected in the power circuit; the protection component of elementary pressure limiting circuit and secondary voltage limiting circuit all adopts piezo-resistance; perhaps; the protection component of elementary pressure limiting circuit adopts gas discharge tube, and the protection component of secondary voltage limiting circuit adopts piezo-resistance.The elementary pressure limiting circuit and the isolated component between the secondary voltage limiting circuit of this class circuit are kept a certain amount of pressure drop always under the situation of power supply operate as normal, influence the normal working voltage of electrical appliance, and the manufacturing cost height.
The purpose of this utility model is to provide a kind of and can effectively solves lightning current power consumption equipment is influenced, and reduces the anti-lightning strike power supply protector of the microelectronic device of the pressure drop of power supply on the isolated component between elementary pressure limiting circuit under the situation of operate as normal and the secondary voltage limiting circuit.
Solution of the present utility model is: contain a housing, be provided with elementary pressure limiting circuit and secondary voltage limiting circuit in the housing, the isolated component of connecting between fuse of the input of elementary pressure limiting circuit series connection, elementary pressure limiting circuit and secondary voltage limiting circuit is a choke; Elementary pressure limiting circuit, secondary voltage limiting circuit and choke all are connected in the power circuit, the input of elementary pressure limiting circuit links to each other with input terminal L, N, E on the housing respectively, and the output of secondary voltage limiting circuit links to each other with outlet terminal L ', N ', E on the housing respectively.
A fuse of the input series connection of elementary pressure limiting circuit is a temperature fuse, and the input of temperature fuse links to each other with the live wire input.
The filter circuit of also can connecting between the output of choke and secondary voltage limiting circuit is further shunted high-frequency current.
After adopting the utility model, the waveform of its output voltage is milder, and the rising steepness is little, can suppress the electromagnetic induction voltage that output voltage causes, and is little to the microelectronic device influence; Owing to adopt choke to replace single inductance as isolated component, have only when the lightning current of same polarity passes through, it just presents high impedance, and when normally moving, because the flow direction of two inductance in the choke is opposite, then inductance is almost nil, and impedance is also almost nil, has guaranteed that power consumption equipment working under normal voltage.
Accompanying drawing has provided the circuit theory diagrams of the utility model embodiment;
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail:
Contain a housing, be provided with elementary pressure limiting circuit and secondary voltage limiting circuit in the housing, temperature fuse of input series connection of elementary pressure limiting circuit, the input of temperature fuse links to each other with the live wire input, the output of temperature fuse and piezo-resistance R
1, piezo-resistance R
3An end and choke in inductance L
1Input link to each other; The isolated component of connecting between elementary pressure limiting circuit and the secondary voltage limiting circuit is a choke; Choke is by inductance L
1And L
2Form; Elementary pressure limiting circuit, secondary voltage limiting circuit and choke all are connected in the power circuit;
Elementary pressure limiting circuit is: the output of temperature fuse and piezo-resistance R
1, piezo-resistance R
3An end and choke in inductance L
1Input link to each other piezo-resistance R
1The other end and piezo-resistance R
2An end all with neutral line input N and choke in inductance L
2Input link to each other piezo-resistance R
3The other end and piezo-resistance R
2The other end all links to each other with ground wire E end.
The secondary voltage limiting circuit is: inductance L in the choke
1Output respectively with piezo-resistance R
4An end, live wire output L ', piezo-resistance R
8An end, gas discharge tube G
3An end link to each other piezo-resistance R
4The other end respectively with piezo-resistance R
5An end, gas discharge tube G
1An end link to each other piezo-resistance R
5The other end, piezo-resistance R
6An end, gas discharge tube G
1The other end and gas discharge tube G
2An end respectively with choke in inductance L
2Output and neutral line output N ' link to each other piezo-resistance R
6The other end and gas discharge tube G
2The other end respectively with piezo-resistance R
7An end link to each other piezo-resistance R
7The other end and ground wire E end link to each other piezo-resistance R
8The other end and gas discharge tube G
3The other end respectively with piezo-resistance R
9An end link to each other piezo-resistance R
9The other end and ground wire E end link to each other.
Input L, the N of elementary pressure limiting circuit, E link to each other with input terminal on the housing respectively, and output L ', the N ' of secondary voltage limiting circuit, E link to each other with outlet terminal on the housing respectively.
Generally speaking, the lightning current intrusion ripple that amplitude equates for polarity is identical.When lightning current is invaded device power supply (DPS), be introduced into input of the present utility model.When lightning current hour, electric current directly enters choke.The choke inductance is increased, elementary pressure limiting circuit and secondary voltage limiting circuit are isolated, when entering the piezo-resistance of secondary voltage limiting circuit by the lightning current behind the choke, its pressure drop increases with the increase of electric current, when reaching certain numerical value, and gas discharge tube G
1, G
2Breakdown, with piezo-resistance R
5, R
6Short circuit greatly reduces output voltage; When lightning current was big, the piezo-resistance of elementary pressure limiting circuit is action thereupon also, and lightning current is mostly by piezo-resistance R
1, R
2Go into ground, so elementary pressure limiting circuit of the present utility model is protected as thick, the secondary voltage limiting circuit is as thin protection.When pressure responsive resistor failure, its leakage current increases greatly, will seriously generate heat, and causes temperature to raise.For preventing fire, when the temperature on the piezo-resistance rose to 85 ℃ or 105 ℃, fuse disconnected, and cuts off the electricity supply.
Claims (2)
1, the anti-lightning strike power supply protector of microelectronic device, contain a housing, be provided with elementary pressure limiting circuit and secondary voltage limiting circuit in the housing, fuse of the input of elementary pressure limiting circuit series connection of the present utility modelly is characterised in that the isolated component of connecting between elementary pressure limiting circuit and the secondary voltage limiting circuit is a choke; Elementary pressure limiting circuit, secondary voltage limiting circuit and choke all are connected in the power circuit, the input of elementary pressure limiting circuit links to each other with input terminal L, N, E on the housing respectively, and the output of secondary voltage limiting circuit links to each other with outlet terminal L ', N ', E on the housing respectively.
2, the anti-lightning strike power supply protector of microelectronic device according to claim 1, a fuse of the input series connection that is characterised in that elementary pressure limiting circuit of the present utility model is a temperature fuse, the input of temperature fuse links to each other with the live wire input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242469 CN2348513Y (en) | 1998-10-26 | 1998-10-26 | Shockproof power supply protector for microelectronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242469 CN2348513Y (en) | 1998-10-26 | 1998-10-26 | Shockproof power supply protector for microelectronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2348513Y true CN2348513Y (en) | 1999-11-10 |
Family
ID=33989028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98242469 Expired - Fee Related CN2348513Y (en) | 1998-10-26 | 1998-10-26 | Shockproof power supply protector for microelectronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2348513Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777761A (en) * | 2009-01-13 | 2010-07-14 | 泉州七星电气有限公司 | Method and system for protecting transformer substation remote terminal unit (RTU) terminal communication |
-
1998
- 1998-10-26 CN CN 98242469 patent/CN2348513Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777761A (en) * | 2009-01-13 | 2010-07-14 | 泉州七星电气有限公司 | Method and system for protecting transformer substation remote terminal unit (RTU) terminal communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |