CN103248036A - Turn-on anti-surge protector for radio interface - Google Patents
Turn-on anti-surge protector for radio interface Download PDFInfo
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- CN103248036A CN103248036A CN2013101775968A CN201310177596A CN103248036A CN 103248036 A CN103248036 A CN 103248036A CN 2013101775968 A CN2013101775968 A CN 2013101775968A CN 201310177596 A CN201310177596 A CN 201310177596A CN 103248036 A CN103248036 A CN 103248036A
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- variable resistor
- diode
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- 230000001012 protector Effects 0.000 title claims abstract description 22
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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Abstract
The invention discloses a turn-on anti-surge protector for a radio interface. The turn-on anti-surge protector comprises a protector housing and an anti-surge protection circuit integrated in the protector housing, wherein the anti-surge protection circuit comprises a resistor R1, a resistor R2, a variable resistor R3, a diode D1, a triode T1 and a comparator, wherein the resistor R1, the variable resistor R3 and the diode D1 are connected in sequence to form a closed loop; a positive electrode of the diode D1 is connected onto the variable resistor R3, and is grounded; two input ends of the comparator are connected with two ends of the resistor R1 respectively, and an output end of the comparator is connected onto a base electrode of the triode T1; an emitting electrode of the triode T1 is grounded, and a collector electrode of the triode T1 is connected onto the resistor R2; and the other end of the resistor R2 is connected onto a VDD, and is connected between the resistor R1 and the variable resistor R3 at the same time. The turn-on anti-surge protector has the advantage that surge generated in an instant of turning on a radio is released, thereby effectively protecting electronic components in the radio.
Description
Technical field
The present invention relates to a kind of anti-Surge Protector, relate to a kind of anti-Surge Protector of start of broadcast receiver interface in particular.
Background technology
Surge mainly refers to the strong pulse that produces at that moment that power supply just opened, and he makes circuit the burning out in a flash of surge probably, punctures as PN junction electric capacity, and resistance blows etc.And the electronic devices and components of wireless inside are more, and in start in a flash, its pulse is to extremely big of the injury of internal circuit.
Summary of the invention
The invention provides a kind of anti-Surge Protector of start of broadcast receiver interface, it can be released the surge of start moment generation, effectively protects the electronic devices and components in the broadcast receiver.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
Surge Protector is prevented in the start of broadcast receiver interface; it comprises protector outer casing and is integrated in the interior anti-surge protection circuit of protector outer casing; described anti-surge protection circuit comprises resistance R 1; resistance R 2; variable resistor R3; diode D1; triode T1 and comparator; described resistance R 1; variable resistor R3 links to each other successively with diode D1 and forms closed loop; the positive pole of diode is connected variable resistor R3 and goes up and ground connection; two inputs of described comparator are connected to the two ends of resistance R 1; output is connected on the base stage of triode T1; the grounded emitter of described triode T1; collector electrode is connected on the resistance R 2, and the other end of described resistance R 2 is connected VDD and goes up and be connected simultaneously between resistance R 1 and the variable resistor R3.
Further technical scheme is:
Be connected with the circuit connecting interface on the collector electrode of described triode T1.
The resistance variable range of described variable resistor R3 is 1000 ohm-5000 ohm.
Described diode is DF5A6.8FU.
In the present invention, the circuit connecting interface is used for connecting wireless internal circuit, and an end of resistance R 2 is connected on the VDD.When power-on; the variable resistor R3 of anti-surge protection circuit is input to comparator with the high pressure dividing potential drop; diode D1 produces the reference voltage of comparator; comparator detect voltage when excessive output signal open triode T1; with the current drain of triode T1 collector electrode, prevent from wireless internal circuit is impacted.
Compared with prior art, the invention has the beneficial effects as follows: its anti-surge protection circuit can be released the powerful voltage of start moment generation, effectively protects wireless internal circuit.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.Embodiments of the present invention include but not limited to the following example.
[embodiment]
Surge Protector is prevented in the start of broadcast receiver interface as shown in Figure 1; it comprises protector outer casing and is integrated in the interior anti-surge protection circuit of protector outer casing; described anti-surge protection circuit comprises resistance R 1; resistance R 2; variable resistor R3; diode D1; triode T1 and comparator; described resistance R 1; variable resistor R3 links to each other successively with diode D1 and forms closed loop; the positive pole of diode is connected variable resistor R3 and goes up and ground connection; two inputs of described comparator are connected to the two ends of resistance R 1; output is connected on the base stage of triode T1; the grounded emitter of described triode T1; collector electrode is connected on the resistance R 2, and the other end of described resistance R 2 is connected VDD and goes up and be connected simultaneously between resistance R 1 and the variable resistor R3.
Be connected with the circuit connecting interface on the collector electrode of described triode T1.
The resistance variable range of described variable resistor R3 is 1000 ohm-5000 ohm.
Described diode is DF5A6.8FU.
In the present invention, the circuit connecting interface is used for connecting wireless internal circuit, and an end of resistance R 2 is connected on the VDD.When power-on; the variable resistor R3 of anti-surge protection circuit is input to comparator with the high pressure dividing potential drop; diode D1 produces the reference voltage of comparator; comparator detect voltage when excessive output signal open triode T1; with the current drain of triode T1 collector electrode, prevent from wireless internal circuit is impacted.
Be embodiments of the invention as mentioned above.The present invention is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (4)
1. Surge Protector is prevented in the start of broadcast receiver interface; it comprises protector outer casing and is integrated in the interior anti-surge protection circuit of protector outer casing; it is characterized in that: described anti-surge protection circuit comprises resistance R 1; resistance R 2; variable resistor R3; diode D1; triode T1 and comparator; described resistance R 1; variable resistor R3 links to each other successively with diode D1 and forms closed loop; the positive pole of diode is connected variable resistor R3 and goes up and ground connection; two inputs of described comparator are connected to the two ends of resistance R 1; output is connected on the base stage of triode T1; the grounded emitter of described triode T1; collector electrode is connected on the resistance R 2, and the other end of described resistance R 2 is connected VDD and goes up and be connected simultaneously between resistance R 1 and the variable resistor R3.
2. the anti-Surge Protector of the start of broadcast receiver interface according to claim 1 is characterized in that: be connected with the circuit connecting interface on the collector electrode of described triode T1.
3. Surge Protector is prevented in the start of broadcast receiver interface according to claim 1, and it is characterized in that: the resistance variable range of described variable resistor R3 is 1000 ohm-5000 ohm.
4. Surge Protector is prevented in the start of broadcast receiver interface according to claim 1, and it is characterized in that: described diode is DF5A6.8FU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101775968A CN103248036A (en) | 2013-05-15 | 2013-05-15 | Turn-on anti-surge protector for radio interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101775968A CN103248036A (en) | 2013-05-15 | 2013-05-15 | Turn-on anti-surge protector for radio interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103248036A true CN103248036A (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101775968A Pending CN103248036A (en) | 2013-05-15 | 2013-05-15 | Turn-on anti-surge protector for radio interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103248036A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414178A (en) * | 2013-08-21 | 2013-11-27 | 成都成电光信科技有限责任公司 | Protection circuit |
| CN110112720A (en) * | 2019-05-23 | 2019-08-09 | 上海艾为电子技术股份有限公司 | A kind of surge protection circuit, port chip and surge protection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174529A (en) * | 1978-04-10 | 1979-11-13 | General Electric Company | Protective circuit for zinc oxide varistors |
| CN1989467A (en) * | 2004-08-10 | 2007-06-27 | 罗姆股份有限公司 | Circuit protection method, protection circuit and power supply device using the protection circuit |
| CN202363897U (en) * | 2011-11-28 | 2012-08-01 | 苏州生物医学工程技术研究所 | Protection circuit for preventing overshoot and surge |
| CN203233166U (en) * | 2013-05-15 | 2013-10-09 | 成都市宏山科技有限公司 | Anti-surge protector for radio |
-
2013
- 2013-05-15 CN CN2013101775968A patent/CN103248036A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174529A (en) * | 1978-04-10 | 1979-11-13 | General Electric Company | Protective circuit for zinc oxide varistors |
| CN1989467A (en) * | 2004-08-10 | 2007-06-27 | 罗姆股份有限公司 | Circuit protection method, protection circuit and power supply device using the protection circuit |
| CN202363897U (en) * | 2011-11-28 | 2012-08-01 | 苏州生物医学工程技术研究所 | Protection circuit for preventing overshoot and surge |
| CN203233166U (en) * | 2013-05-15 | 2013-10-09 | 成都市宏山科技有限公司 | Anti-surge protector for radio |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414178A (en) * | 2013-08-21 | 2013-11-27 | 成都成电光信科技有限责任公司 | Protection circuit |
| CN110112720A (en) * | 2019-05-23 | 2019-08-09 | 上海艾为电子技术股份有限公司 | A kind of surge protection circuit, port chip and surge protection method |
| CN110112720B (en) * | 2019-05-23 | 2021-10-01 | 上海艾为电子技术股份有限公司 | Surge protection circuit, port chip and surge protection method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130814 |