CN203911468U - Communication base station controller with short circuit protection - Google Patents
Communication base station controller with short circuit protection Download PDFInfo
- Publication number
- CN203911468U CN203911468U CN201420310006.4U CN201420310006U CN203911468U CN 203911468 U CN203911468 U CN 203911468U CN 201420310006 U CN201420310006 U CN 201420310006U CN 203911468 U CN203911468 U CN 203911468U
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- China
- Prior art keywords
- triode
- comparator
- circuit protection
- base station
- diode
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Abstract
The utility model discloses a communication base station controller with short circuit protection. A short circuit protection circuit is connected between a power port and an internal circuit, the short circuit protection circuit comprises a triode T1, the collector electrode of the triode T1 is simultaneously connected with the power port and the cathode of a diode D1, the emitter electrode of the triode T1 is simultaneously connected with the collector electrode of a triode T2 and the anode of a diode D2, the base electrode of the triode T1 and the base electrode of the triode T2 are simultaneously connected with the output end of a comparator, the emitter electrode of the triode T2 is connected to a power supply, the cathode of the diode D2 is connected with the anti-phase input end of the comparator, the anode of the diode D1 is connected with the in-phase input end of the comparator, the output end of the comparator is connected with the source electrode of a field effect transistor, the in-phase input end of the comparator is connected with a pull-up resistor R1, and the output end of the comparator is connected with a pull-up resistor R2. The communication base station controller has the advantages that the circuit structure is simple, and short circuit protection is provided.
Description
Technical field
The utility model relates to a kind of communication base station controller, relates in particular a kind of communication base station controller with short-circuit protection.
Background technology
Under the background developing rapidly in mechanics of communication, the number of users rapid growth of global mobile communication network, simultaneously, along with the increasing of the number of users of mobile communication, the quantity of mobile communication base station controller also increases thereupon.Communication base station controller is as the visual plant of communication base station, and safety is very important evaluation index.Communication base station controller need adopt Power supply, in the time that power supply goes wrong, will make communication base station controller and even the paralysis of whole communication base station, brings and uses inconvenience to user.
Utility model content
The utility model provides a kind of communication base station controller with short-circuit protection, and it connects short-circuit protection circuit on the power port of communication base station controller, and it is carried out to short-circuit protection, and circuit structure is simple, ensures the normal operation of communication base station controller.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
There is the communication base station controller of short-circuit protection, it comprises power port and internal circuit, between described power port and internal circuit, be connected with short-circuit protection circuit, described short-circuit protection circuit comprises triode T1, the collector electrode of described triode T1 is connected on the negative electrode of power port and diode D1 simultaneously, the emitter of described triode T1 is connected with the anode of diode D2 with the collector electrode of triode T2 simultaneously, described triode T1 and the base stage of triode T2 are connected on the output of comparator simultaneously, the emitter of described triode T2 is connected on power supply, the negative electrode of described diode D2 is connected on the reverse input end of comparator, the anodic bonding of described diode D1 is on the in-phase input end of comparator, the output of described comparator is connected on the source electrode of field effect transistor, the grounded drain of described field effect transistor, on the in-phase input end of described comparator, be connected with resistance R 1, the other end of described resistance R 1 is connected on power supply, on the output of described comparator, be connected with resistance R 2, the other end of described resistance R 2 is connected on power supply, described triode T1 and triode T2 are NPN type triode, described field effect transistor is N-type field effect transistor.
Further technical scheme is:
As preferably, on the in-phase input end of described comparator, be connected with ground capacity C2.
Further, on the anode of described diode D2, be connected with ground capacity C1.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model connects short-circuit protection circuit on communication base station controller power source port; make communication base station controller no matter still power supply short circuit is made all can normally work at shorted to earth; communication base station controller is carried out to short-circuit protection, realize the short-circuit protection of safe level.
2, circuit structure of the present utility model is simple, with low cost, realizes larger function with less cost.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the circuit diagram of short-circuit protection circuit 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]
The communication base station controller with short-circuit protection as shown in Figure 1, it comprises power port and internal circuit, between described power port and internal circuit, be connected with short-circuit protection circuit, described short-circuit protection circuit comprises triode T1, the collector electrode of described triode T1 is connected on the negative electrode of power port and diode D1 simultaneously, the emitter of described triode T1 is connected with the anode of diode D2 with the collector electrode of triode T2 simultaneously, described triode T1 and the base stage of triode T2 are connected on the output of comparator simultaneously, the emitter of described triode T2 is connected on power supply, the negative electrode of described diode D2 is connected on the reverse input end of comparator, the anodic bonding of described diode D1 is on the in-phase input end of comparator, the output of described comparator is connected on the source electrode of field effect transistor, the grounded drain of described field effect transistor, on the in-phase input end of described comparator, be connected with resistance R 1, the other end of described resistance R 1 is connected on power supply, on the output of described comparator, be connected with resistance R 2, the other end of described resistance R 2 is connected on power supply, described triode T1 and triode T2 are NPN type triode, described field effect transistor is N-type field effect transistor.In the utility model, the grid of field effect transistor is connected on the internal circuit of communication base station controller.Triode T1, triode T2 are for controlling the output of power supply, and the in-phase input end of comparator is subject to the joint effect of power port voltage and resistance R 1 terminal voltage, and the current potential of inverting input is determined by indefinite voltage.Indefinite voltage is decided by emitter voltage or the power port voltage of triode T2, and it equals magnitude of voltage larger in both.Comparator forms a window comparator.If the magnitude of voltage of power port is outside the comparison value of window comparator, a low level of comparator output, triode T1 and triode T2 are turn-offed, power port voltage cannot be entered, also prevent the overcurrent occurring because of shorted to earth, make communication base station controller avoid the problem that circuit is invaded and harassed.
In order to make short-circuit protection circuit performance more stable, on the in-phase input end of described comparator, be connected with ground capacity C2.
On the anode of described diode D2, be connected with ground capacity C1.
Capacitor C 1 and capacitor C 2 can absorb spike, avoid interference the impact on circuit, improve the accuracy of comparator, and its reliability is strengthened.
In the present embodiment, as one group of preferred scheme, it is the resistance of 1 kilohm, 200 ohm that resistance R 1, resistance R 2 can adopt resistance; Capacitor C 1 and capacitor C 2 all can adopt the electric capacity of 100 μ F; It is the diode of IN5408, IN4001 that diode D1, diode D2 can adopt model.Triode T1, triode T2 and triode T 3 all adopt NPN type triode field; Effect pipe adopts N-type field effect transistor.Operational amplifier can adopt CA3130.Through emulation, adopt the electronic device of above-mentioned specification, can make the best performance of circuit.
Be as mentioned above embodiment of the present utility model.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, within all falling into protection range of the present utility model.
Claims (3)
1. there is the communication base station controller of short-circuit protection, it comprises power port and internal circuit, it is characterized in that: between described power port and internal circuit, be connected with short-circuit protection circuit, described short-circuit protection circuit comprises triode T1, the collector electrode of described triode T1 is connected on the negative electrode of power port and diode D1 simultaneously, the emitter of described triode T1 is connected with the anode of diode D2 with the collector electrode of triode T2 simultaneously, described triode T1 and the base stage of triode T2 are connected on the output of comparator simultaneously, the emitter of described triode T2 is connected on power supply, the negative electrode of described diode D2 is connected on the reverse input end of comparator, the anodic bonding of described diode D1 is on the in-phase input end of comparator, the output of described comparator is connected on the source electrode of field effect transistor, the grounded drain of described field effect transistor, on the in-phase input end of described comparator, be connected with resistance R 1, the other end of described resistance R 1 is connected on power supply, on the output of described comparator, be connected with resistance R 2, the other end of described resistance R 2 is connected on power supply, described triode T1 and triode T2 are NPN type triode, described field effect transistor is N-type field effect transistor.
2. the communication base station controller with short-circuit protection according to claim 1, is characterized in that: on the in-phase input end of described comparator, be connected with ground capacity C2.
3. the communication base station controller with short-circuit protection according to claim 1 and 2, is characterized in that: on the anode of described diode D2, be connected with ground capacity C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310006.4U CN203911468U (en) | 2014-06-12 | 2014-06-12 | Communication base station controller with short circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310006.4U CN203911468U (en) | 2014-06-12 | 2014-06-12 | Communication base station controller with short circuit protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203911468U true CN203911468U (en) | 2014-10-29 |
Family
ID=51785714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420310006.4U Expired - Fee Related CN203911468U (en) | 2014-06-12 | 2014-06-12 | Communication base station controller with short circuit protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203911468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052039A (en) * | 2014-06-12 | 2014-09-17 | 四川联友电讯技术有限公司 | Communication base station controller capable of achieving short-circuit protection |
-
2014
- 2014-06-12 CN CN201420310006.4U patent/CN203911468U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052039A (en) * | 2014-06-12 | 2014-09-17 | 四川联友电讯技术有限公司 | Communication base station controller capable of achieving short-circuit protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20190612 |