CN203481813U - Alternating-direct-current power source voltage stabilization and protection circuit - Google Patents
Alternating-direct-current power source voltage stabilization and protection circuit Download PDFInfo
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- CN203481813U CN203481813U CN201320525021.6U CN201320525021U CN203481813U CN 203481813 U CN203481813 U CN 203481813U CN 201320525021 U CN201320525021 U CN 201320525021U CN 203481813 U CN203481813 U CN 203481813U
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Abstract
The utility model discloses an alternating-direct-current power source voltage stabilization and protection circuit which comprises a dual-direction silicon controlled rectifier which is serially connected between two input ends of an alternating-direct current and a series branch which is formed by successive connection of a first resistor, a dual-direction breakdown diode or two voltage stabilization diodes which are in series-opposing connection, and a silicon controlled rectifier protection element, and the series branch is in parallel connection with the dual-direction silicon controlled rectifier. According to the voltage stabilization and protection circuit, when loads of a power source get larger or smaller, power supply loads of the power source can be automatically adjusted, and the protection circuit is suitable for the alternating-current input or the direct-current input, and also supports high-power non-instantaneous surge impact protection. The protection input range is quite wide, the voltage stabilization protection circuit can conduct protection at the input high voltage below 780V. A diode can be arranged between the positive input end of the alternating-direct current and the input end of the power source, and therefore when the circuit works, electric energy stored in the power source is not extracted. In addition, the voltage stabilization and protection circuit is simple in structure, small in component, low in cost, high in efficiency and small in size.
Description
Technical field
The utility model relates to Power supply field, especially a kind of power of alterating and direct current protective circuit of voltage regulation.
Background technology
Because the at present load of power supply generally is constant or changes not quite, when input supply voltage fluctuates excessive time, the electric current of the POL of flowing through can increase greatly, thereby causes the damage of load equipment or the damage of power supply.And current power supply voltage-stabilizing protection electric current can not be dealt with this situation; generally can only play the protection to instantaneous surge impact; or within little input range, guarantee the steady operation of power supply, and power supply protective circuit of voltage regulation is all generally only to protect the too high damage causing of DC power supply amplitude at present.
Summary of the invention
For solving the problems of the technologies described above, the technical problems to be solved in the utility model is to provide a kind of power of alterating and direct current protective circuit of voltage regulation.
The technical solution adopted in the utility model is: a kind of power of alterating and direct current protective circuit of voltage regulation, it is characterized in that comprising: be connected on the bidirectional triode thyristor between alternating current-direct current two inputs, by two voltage stabilizing didoes of the first resistance, diac or differential concatenation, the series arm that silicon controlled rectifier protecting element connects and composes successively; Described series arm is in parallel with bidirectional triode thyristor, described bidirectional triode thyristor has the first main terminal, the second main terminal and controls the utmost point, the described control utmost point is connected with one end of diac, and described the first main terminal, the second main terminal connect respectively alternating current-direct current positive input terminal, negative input end.
It also comprises the diode being arranged between alternating current-direct current positive input terminal and power input.
Described silicon controlled rectifier protecting element is the second resistance, and the two ends of described the second resistance connect respectively diac and alternating current-direct current negative input end.
Described silicon controlled rectifier protecting element is the first electric capacity, and the two ends of described the first electric capacity connect respectively diac and alternating current-direct current negative input end.
Described silicon controlled rectifier protecting element comprises the second resistance, the first electric capacity, and described the second resistance is connected diac and alternating current-direct current negative input end respectively with the first Capacitance parallel connection and the two ends of the two.
It also comprises an inductance, and described inductance is connected between the first main terminal of alternating current-direct current positive input terminal and bidirectional triode thyristor.
The beneficial effects of the utility model:
The utility model protective circuit of voltage regulation can automatically regulate the confession electric loading to power supply when power source loads becomes large or diminishes, and interchange or direct current input are all suitable for, and also supports powerful non-instantaneous surge impact protection; Protection input range is very broad, can protect by the input high pressure below 780V; In addition, the utility model protective circuit of voltage regulation also can be used for the overtension that prevents that Current Transmit open circuit from causing, protection CT and the high-tension electricity people that prevents from opening a way.This protective circuit of voltage regulation can be between alternating current-direct current positive input terminal and power input be provided with diode, while making this circuit working, do not extract the electric energy that power supply itself has been stored.In addition, the utility model protective circuit of voltage regulation is simple, and device is few, and cost is low, and efficiency is high, volume is little.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
Fig. 1 is the first embodiment circuit theory diagrams of the utility model power of alterating and direct current protective circuit of voltage regulation.
Fig. 2 is the second embodiment circuit theory diagrams of the utility model power of alterating and direct current protective circuit of voltage regulation.
Embodiment
Shown in Fig. 1, the first embodiment for a kind of power of alterating and direct current protective circuit of voltage regulation of the present utility model, comprise: be connected on the bidirectional triode thyristor Q1 between alternating current-direct current two input IN+, IN-, the series arm being connected and composed successively by the first resistance R 1, diac D1, silicon controlled rectifier protecting element P, and be arranged on the diode D2 between alternating current-direct current positive input terminal IN+ and power input Vout+; This series arm is in parallel with bidirectional triode thyristor Q1, bidirectional triode thyristor Q1 has the first main terminal T1, the second main terminal T2 and controls utmost point G, its control utmost point G is connected with one end of diac D1, and the first main terminal T1, the second main terminal T2 connect respectively alternating current-direct current positive input terminal IN+, negative input end IN-;
Wherein, the silicon controlled rectifier protecting element P of the utility model power supply protective circuit of voltage regulation is the second resistance R 2, first capacitor C 1 both individualisms or existence simultaneously, and while existing, the second resistance R 2 is in parallel with the first capacitor C 1 simultaneously; R2, C1 play respectively the effect of biasing and filtering protection bidirectional triode thyristor Q1, if can remove C1 to the signal power source inlet wire voltage-stabilizing protection with high frequency, only retain R2; If need, also can remove R1, retain C1.Therefore, in silicon controlled rectifier protecting element P, R2, C1 at least retain one, otherwise circuit cisco unity malfunction.
Further perfect as the technical program; the utility model power supply protective circuit of voltage regulation also comprises an inductance L 1; this inductance L 1 is connected between the first main terminal T1 of alternating current-direct current positive input terminal IN+ and bidirectional triode thyristor Q1; increasing L1 plays a protective role to bidirectional triode thyristor Q1; reduce the damage of bidirectional triode thyristor Q1, increase the reliability of circuit.
The course of work of the utility model power supply protective circuit of voltage regulation is as follows:
A. when alternating current-direct current is from IN+, IN-input, when input voltage is no more than the upper limit of protective circuit of voltage regulation design, be not enough to puncture D1; D1 does not work; cannot give and control utmost point G trigger voltage, the not conducting of Q1 bidirectional triode thyristor, power supply directly outputs to the input Vout+ of power supply through diode D2.
B. when alternating current-direct current is from IN+; IN-input; when input voltage surpasses the upper limit of protective circuit of voltage regulation design, after R1 current limliting, puncture D1 and conducting; control utmost point G and obtain trigger voltage; the bidirectional triode thyristor Q1 conducting of working, protective circuit of voltage regulation work, is drawn into input voltage below the protecting circuit designed upper limit; due to the single-phase conducting of D2() exist, the electric energy of having stored of power supply itself can protected circuit loss not fall.Now bidirectional triode thyristor Q1 work conducting has realized step-down, when IN+ voltage feeds back to D1 again through R1, has been not enough to allow Q1 work, and Q1 closes, and so comes and goes the effect that pressure limiting and protection are played in circulation.
In addition; it is to be noted; in the utility model power supply protective circuit of voltage regulation, diac D1 can be substituted by two voltage stabilizing didoe differential concatenations; therefore; if other technologies scheme is only replaced the diac D1 in the utility model with two voltage stabilizing didoes, within belonging to protection range of the present utility model.
As shown in Figure 2, compare with the first embodiment in Fig. 1, removed diode D2; circuit of the present utility model can be as the open-circuit protector of Current Transmit; when CT open circuit voltage raises, protect, prevent the overtension that CT open circuit causes, protection CT and the high-tension electricity people that prevents from opening a way.
The utility model protective circuit of voltage regulation can automatically regulate the confession electric loading to power supply when power source loads becomes large or diminishes, and interchange or direct current input are all suitable for, and also supports powerful non-instantaneous surge impact protection; Protection input range is very broad, can carry high pressure to being with of the following long-term input of 780V and protect and voltage stabilizing; This protective circuit of voltage regulation can be between alternating current-direct current positive input terminal and power input be provided with diode, while making this circuit working, do not extract the electric energy that power supply itself has been stored.In addition, the utility model protective circuit of voltage regulation is simple, and device is few, and cost is low, and efficiency is high, volume is little.
The foregoing is only preferential execution mode of the present utility model, the utility model is not limited to above-mentioned execution mode, as long as within the technical scheme that realizes the utility model object with basic identical means all belongs to protection range of the present utility model.
Claims (6)
1. a power of alterating and direct current protective circuit of voltage regulation, it is characterized in that comprising: be connected on the bidirectional triode thyristor (Q1) between alternating current-direct current two inputs (IN+, IN-), by two voltage stabilizing didoes of the first resistance (R1), diac (D1) or differential concatenation, the series arm that silicon controlled rectifier protecting element (P) connects and composes successively; Described series arm is in parallel with bidirectional triode thyristor (Q1), described bidirectional triode thyristor (Q1) has the first main terminal (T1), the second main terminal (T2) and controls the utmost point (G), the described control utmost point (G) is connected with one end of diac (D1), and described the first main terminal (T1), the second main terminal (T2) connect respectively alternating current-direct current positive input terminal (IN+), negative input end (IN-).
2. a kind of power of alterating and direct current protective circuit of voltage regulation according to claim 1, is characterized in that: it also comprises the diode (D2) being arranged between alternating current-direct current positive input terminal (IN+) and power input (Vout+).
3. a kind of power of alterating and direct current protective circuit of voltage regulation according to claim 1 and 2; it is characterized in that: described silicon controlled rectifier protecting element (P) is the second resistance (R2), the two ends of described the second resistance (R2) connect respectively diac (D1) and alternating current-direct current negative input end (IN-).
4. a kind of power of alterating and direct current protective circuit of voltage regulation according to claim 1 and 2; it is characterized in that: described silicon controlled rectifier protecting element (P) is the first electric capacity (C1), the two ends of described the first electric capacity (C1) connect respectively diac (D1) and alternating current-direct current negative input end (IN-).
5. a kind of power of alterating and direct current protective circuit of voltage regulation according to claim 1 and 2; it is characterized in that: described silicon controlled rectifier protecting element (P) comprises the second resistance (R2), the first electric capacity (C1), described the second resistance (R2) is connected diac (D1) and alternating current-direct current negative input end (IN-) respectively with the first electric capacity (C1) parallel connection and the two ends of the two.
6. a kind of power of alterating and direct current protective circuit of voltage regulation according to claim 1; it is characterized in that: it also comprises an inductance (L1), described inductance (L1) is connected between alternating current-direct current positive input terminal (IN+) and first main terminal (T1) of bidirectional triode thyristor (Q1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525021.6U CN203481813U (en) | 2013-08-27 | 2013-08-27 | Alternating-direct-current power source voltage stabilization and protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525021.6U CN203481813U (en) | 2013-08-27 | 2013-08-27 | Alternating-direct-current power source voltage stabilization and protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203481813U true CN203481813U (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320525021.6U Withdrawn - After Issue CN203481813U (en) | 2013-08-27 | 2013-08-27 | Alternating-direct-current power source voltage stabilization and protection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN203481813U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103427410A (en) * | 2013-08-27 | 2013-12-04 | 珠海欧力配电自动化系统有限公司 | Alternating-direct-current power source voltage stabilization protective circuit |
| CN106786464A (en) * | 2017-01-12 | 2017-05-31 | 徐向宇 | Active defense formula sensor insulation blocking method and its isolation protective circuit |
| CN107785870A (en) * | 2017-11-11 | 2018-03-09 | 河南森源电气股份有限公司 | A kind of current transformer and its secondary side open-circuit protecting device |
| CN107785869A (en) * | 2017-11-08 | 2018-03-09 | 河南森源电气股份有限公司 | A kind of current transformer and its secondary side protective arrangement for limiting output voltage |
-
2013
- 2013-08-27 CN CN201320525021.6U patent/CN203481813U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103427410A (en) * | 2013-08-27 | 2013-12-04 | 珠海欧力配电自动化系统有限公司 | Alternating-direct-current power source voltage stabilization protective circuit |
| CN103427410B (en) * | 2013-08-27 | 2016-08-17 | 珠海欧力配网自动化股份有限公司 | A kind of Alternating-direct-cpowert powert source voltage stabilization protective circuit |
| CN106786464A (en) * | 2017-01-12 | 2017-05-31 | 徐向宇 | Active defense formula sensor insulation blocking method and its isolation protective circuit |
| CN107785869A (en) * | 2017-11-08 | 2018-03-09 | 河南森源电气股份有限公司 | A kind of current transformer and its secondary side protective arrangement for limiting output voltage |
| CN107785870A (en) * | 2017-11-11 | 2018-03-09 | 河南森源电气股份有限公司 | A kind of current transformer and its secondary side open-circuit protecting device |
| CN107785870B (en) * | 2017-11-11 | 2023-11-24 | 河南森源电气股份有限公司 | Current transformer and secondary side open circuit protection device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHUHAI OULI DISTRIBUTION NETWORK AUTOMATION CO., L Free format text: FORMER NAME: ZHUHAI OULI DISTRIBUTION AUTOMATION SYSTEM CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 519085, No. 2, No. 1, Jinxing Road, Harbour Road, Tang Wan Town, Zhuhai, Guangdong Patentee after: ZHUHAI OULI DISTRIBUTION NETWORK AUTOMATION CO., LTD. Address before: 519085, No. 2, No. 1, Jinxing Road, Harbour Road, Tang Wan Town, Zhuhai, Guangdong Patentee before: Zhuhai Ouli Power Distribution Automation System Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20160817 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |