CN203233166U - Anti-surge protector for radio - Google Patents
Anti-surge protector for radio Download PDFInfo
- Publication number
- CN203233166U CN203233166U CN 201320261626 CN201320261626U CN203233166U CN 203233166 U CN203233166 U CN 203233166U CN 201320261626 CN201320261626 CN 201320261626 CN 201320261626 U CN201320261626 U CN 201320261626U CN 203233166 U CN203233166 U CN 203233166U
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- resistance
- resistor
- triode
- variable resistor
- protector
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Abstract
The utility model discloses an anti-surge protector for a radio, and the protector comprises a protector shell, and an anti-surge protection circuit which is integrated inside the protector shell. 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. The resistor R1, the variable resistor R3, and the diode D1 are sequentially connected to form a closed loop. The positive electrode of the diode D1 is connected to the variable resistor R3 and also grounded. Two input terminals of the comparator are respectively connected to two terminals of the resistor R1. An output terminal of the comparator is connected to the base electrode of the triode T1. The emitter electrode of the triode is grounded. The collector electrode of the triode is connected to the resistor R2. The other terminal of the resistor R2 is connected to a VDD, and also connected between the resistor R1 and the variable resistor R3. The protector is advantageous by instantly discharging the surge generated by startup of a computer, which effectively protects electronic components inside a radio.
Description
Technical field
The utility model relates to a kind of anti-Surge Protector, relates to a kind of for wireless anti-Surge Protector 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.
The utility model content
It is a kind of for wireless anti-Surge Protector that the utility model provides, and 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 utility model by the following technical solutions:
Be used for wireless anti-Surge Protector; 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 utility model, 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 beneficial effects of the utility model are: 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 utility model is described in further detail.
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.Execution mode of the present utility model includes but not limited to the following example.
[embodiment]
As shown in Figure 1 be used for wireless anti-Surge Protector; 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 utility model, 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 embodiment of the present utility model as mentioned above.The utility model is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, all fall within the protection range of the present utility model.
Claims (4)
1. be used for wireless anti-Surge Protector; 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. according to claim 1 for wireless anti-Surge Protector, it is characterized in that: be connected with the circuit connecting interface on the collector electrode of described triode T1.
3. according to claim 1 for wireless anti-Surge Protector, it is characterized in that: the resistance variable range of described variable resistor R3 is 1000 ohm-5000 ohm.
4. according to claim 1 for wireless anti-Surge Protector, it is characterized in that: described diode is DF5A6.8FU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320261626 CN203233166U (en) | 2013-05-15 | 2013-05-15 | Anti-surge protector for radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320261626 CN203233166U (en) | 2013-05-15 | 2013-05-15 | Anti-surge protector for radio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203233166U true CN203233166U (en) | 2013-10-09 |
Family
ID=49289270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320261626 Expired - Fee Related CN203233166U (en) | 2013-05-15 | 2013-05-15 | Anti-surge protector for radio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203233166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248036A (en) * | 2013-05-15 | 2013-08-14 | 成都市宏山科技有限公司 | Turn-on anti-surge protector for radio interface |
-
2013
- 2013-05-15 CN CN 201320261626 patent/CN203233166U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248036A (en) * | 2013-05-15 | 2013-08-14 | 成都市宏山科技有限公司 | Turn-on anti-surge protector for radio interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140515 |