CN203326553U - Multiple time-delaying overvoltage protector - Google Patents
Multiple time-delaying overvoltage protector Download PDFInfo
- Publication number
- CN203326553U CN203326553U CN2013204170642U CN201320417064U CN203326553U CN 203326553 U CN203326553 U CN 203326553U CN 2013204170642 U CN2013204170642 U CN 2013204170642U CN 201320417064 U CN201320417064 U CN 201320417064U CN 203326553 U CN203326553 U CN 203326553U
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- overvoltage
- multinomial
- time delay
- amplifier
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Abstract
The utility model relates to a multiple time-delaying overvoltage protector comprising an over power supply portion, multiple time-delaying function branches and a silicon-controlled switch portion which are connected in sequence. Each of the multiple time-delaying function branches comprises an overvoltage detection portion, an overvoltage signal output portion and a function time-delay portion in sequence. There are no fewer than two multiple time-delaying function branches and the multiple time-delaying branches are connected in parallel and then are connected between the power supply portion and the silicon-controlled switch portion. The multiple time-delaying function branches are connected with the silicon-controlled switch portion through diodes. The plurality of multiple time-delaying function branches which do not influence each other are utilized in the overvoltage protector, so that each branch is capable of charging and discharging through an independent capacitor, different switch action time delays under different overvoltages are achieved; and the higher the voltage is, the shorter the switch action time is.
Description
Technical field
The utility model relates to a kind of overvoltage protection, especially relates to multinomial time delay overvoltage protection.
Background technology
The overvoltage protection function ratio is more single in the market, is set under a voltage condition and carries out overvoltage protection, and the switch motion time delay is identical, but, for needing different delay functions under different over-voltage condition, existing protective device can't meet the demands.
The utility model content
For above-mentioned problem, the utility model provides a kind of overvoltage protection with multinomial delay function, and concrete technical scheme is:
Multinomial time delay overvoltage protection; comprise power unit, multinomial delay function branch road and the reverse-blocking tetrode thyristor part excessively that connect successively; described multinomial delay function branch road comprises overvoltage test section, overvoltage signal output, function time delay part successively, wherein:
Power unit, for providing power supply and reference voltage to device;
The overvoltage test section, judged rear output high level signal for the voltage level to described power circuit input;
The overvoltage signal output, for receiving described high level signal and being transferred to described function time delay part;
Function time delay part, export described high level signal to the reverse-blocking tetrode thyristor part after the time delay of being charged;
The reverse-blocking tetrode thyristor part, realize cutting off the protected circuit power supply;
Described multinomial delay function branch road is no less than two, after each multinomial delay function branch circuit parallel connection, is linked between power unit and reverse-blocking tetrode thyristor part, and described multinomial delay function branch road partly is connected with reverse-blocking tetrode thyristor by diode.
Described overvoltage test section comprises dropping resistor, adjusting resistance and electric capacity of voltage regulation thereof, operational amplifier successively, power supply accesses the amplifier positive input after dropping resistor, adjusting resistance and electric capacity of voltage regulation thereof, reference voltage access amplifier negative input, amplifier out access overvoltage signal output;
Described overvoltage signal output comprises the resistance to earth of an end ground connection;
Described function time delay part, the earth resistance, charging resistor and the amplifier that comprise discharge diode, charging capacitor and parallel connection with it form, discharge diode, charging capacitor, charging resistor access the positive input of amplifier side by side, the negative input access reference voltage of amplifier, output accesses described diode and partly is connected with reverse-blocking tetrode thyristor.
The utility model is used many multinomial delay function branch roads that are independent of each other, and each branch road discharges and recharges by independent capacitance, has realized the difference of the switch motion time delay under different over-voltage condition, and voltage is higher, and the switch motion time is shorter.
The accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, comprise successively connect cross power unit 100, four multinomial delay function branch roads and reverse-blocking tetrode thyristor parts 500, described multinomial delay function branch road is linked between power unit 100 and reverse-blocking tetrode thyristor part 500 after comprising successively overvoltage test section 200, overvoltage signal output 300,400, four multinomial delay function branch circuit parallel connections of function time delay part.
Wherein: power circuit 100, the alternating voltage of power input L and N end is after bridge rectifier U3 rectification, obtain a direct voltage VA, pass through successively again R13, R4, R3 dropping resistor, voltage-stabiliser tube D5, the filter capacitor C9 in parallel with D5, obtain the flat VCC of galvanic current, this voltage VCC is respectively used to provide power supply to circuit, DC level VCC obtains a DC level VB through dropping resistor R1, voltage-stabiliser tube D6 again, and DC level VB is for providing reference level to respectively each amplifier of oversampling circuit;
Function time delay part 400, export described high level signal to the reverse-blocking tetrode thyristor part after the time delay of being charged; The function time delay partly comprises that earth resistance R30, the charging resistor R29 of discharge diode D3, charging capacitor C1 and parallel connection with it and four amplifier integrated chip U2 form, the positive input U2-3 of an amplifier in discharge diode D3, charging capacitor C1, charging resistor R29 access chip U2 arranged side by side, the negative input U2-2 access DC level VB of amplifier, output U2-1 access diode Q1 is connected with reverse-blocking tetrode thyristor part 500.When output U1-1 does not have in the situation of output, the positive pole of capacitor C 1 directly discharges over the ground by diode D3, resistance R 22, positive input U2-3 is low level always, output U2-1 is output not, and work as output U1-1, have in the situation of output, discharge diode D3 cut-off, C1 electric capacity starts charging, and the size that can regulate R29 and C1 according to actual requirement realizes the length of switch motion time delay; When the C1 both end voltage, during higher than the DC level VB of negative input U2-2, output U2-1 has high level signal output.
Reverse-blocking tetrode thyristor part 500, realize cutting off the protected circuit power supply; The reverse-blocking tetrode thyristor P1 of reverse-blocking tetrode thyristor part 500 controls the utmost point and connects output U2-1 by diode Q1 and current-limiting resistance R28, when output U2-1 is high level, electric current is through diode Q1, current-limiting resistance R28, arrive reverse-blocking tetrode thyristor P1 and control the utmost point, make reverse-blocking tetrode thyristor P1 conducting, switch motion.
Other three multinomial delay function branch roads, with above-mentioned the same, can be adjusted as required charging resistor R27, R31, R32 and charging capacitor C2, C3, C4 and realize the action delay difference of switch under different voltage.
Claims (4)
1. multinomial time delay overvoltage protection; comprise power unit, multinomial delay function branch road and the reverse-blocking tetrode thyristor part excessively that connect successively; described multinomial delay function branch road comprises overvoltage test section, overvoltage signal output, function time delay part successively, wherein:
Power unit, for providing power supply and reference voltage to device;
The overvoltage test section, judged rear output high level signal for the voltage level to described power circuit input;
The overvoltage signal output, for receiving described high level signal and being transferred to described delay function time delay part;
Function time delay part, export described high level signal to the reverse-blocking tetrode thyristor part after the time delay of being charged;
The reverse-blocking tetrode thyristor part, realize cutting off the protected circuit power supply;
It is characterized in that, described multinomial delay function branch road is no less than two, after each multinomial delay function branch circuit parallel connection, is linked between power unit and reverse-blocking tetrode thyristor part, and described multinomial delay function branch road partly is connected with reverse-blocking tetrode thyristor by diode.
2. multinomial time delay overvoltage protection according to claim 1; it is characterized in that: described overvoltage test section comprises dropping resistor, adjusting resistance and electric capacity of voltage regulation thereof, operational amplifier successively; power supply accesses the amplifier positive input after dropping resistor, adjusting resistance and electric capacity of voltage regulation thereof; reference voltage access amplifier negative input, amplifier out access overvoltage signal output.
3. multinomial time delay overvoltage protection according to claim 1, it is characterized in that: described overvoltage signal output comprises the resistance to earth of an end ground connection.
4. multinomial time delay overvoltage protection according to claim 1; it is characterized in that: described function time delay part; the earth resistance, charging resistor and the amplifier that comprise discharge diode, charging capacitor and parallel connection with it form; discharge diode, charging capacitor, charging resistor access the positive input of amplifier side by side; the negative input access reference voltage of amplifier, output accesses described diode and partly is connected with reverse-blocking tetrode thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204170642U CN203326553U (en) | 2013-07-15 | 2013-07-15 | Multiple time-delaying overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204170642U CN203326553U (en) | 2013-07-15 | 2013-07-15 | Multiple time-delaying overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326553U true CN203326553U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204170642U Expired - Lifetime CN203326553U (en) | 2013-07-15 | 2013-07-15 | Multiple time-delaying overvoltage protector |
Country Status (1)
| Country | Link |
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| CN (1) | CN203326553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301309A (en) * | 2016-07-18 | 2017-01-04 | 厦门优迅高速芯片有限公司 | A kind of electrifying startup reset circuit that can accurately set hysteresis voltage |
-
2013
- 2013-07-15 CN CN2013204170642U patent/CN203326553U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301309A (en) * | 2016-07-18 | 2017-01-04 | 厦门优迅高速芯片有限公司 | A kind of electrifying startup reset circuit that can accurately set hysteresis voltage |
| CN106301309B (en) * | 2016-07-18 | 2023-08-01 | 厦门优迅高速芯片有限公司 | Power-on starting reset circuit capable of accurately setting hysteresis voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: EATON ELECTRIC LTD. Free format text: FORMER OWNER: WUXI HUAYANG SCIENCE AND TECHNOLOGY CO., LTD. Effective date: 20131231 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214024 WUXI, JIANGSU PROVINCE TO: 215000 SUZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131231 Address after: Suzhou City, Jiangsu province 215000 Suzhou Industrial Park Lou Yang Road 2 Patentee after: Eaton Electric Ltd. Address before: 214024, C, 89, Wuxi hi tech Industrial Park, Jiangsu, China Patentee before: WUXI HUAYANG SCIENCE AND TECHNOLOGY CO.,LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
|
| CX01 | Expiry of patent term |