CN203911903U - Power interface circuit for emitter mixer - Google Patents
Power interface circuit for emitter mixer Download PDFInfo
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- CN203911903U CN203911903U CN201420310080.6U CN201420310080U CN203911903U CN 203911903 U CN203911903 U CN 203911903U CN 201420310080 U CN201420310080 U CN 201420310080U CN 203911903 U CN203911903 U CN 203911903U
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- effect transistor
- field effect
- circuit
- variable resistor
- resistance
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Abstract
The utility model discloses a power interface circuit for an emitter mixer. The power interface circuit comprises an input circuit, the input circuit is connected with a voltage multiplying circuit, the voltage multiplying circuit is connected with one end of a capacitor C1 and the source electrode of a field effect transistor, the other end of the capacitor C1 is grounded, the source and grid electrodes of the field effect transistor are connected via a resistor R1, the grid electrode of the field effect transistor is connected with a pin K of a chip TL431 and the collector electrode of a triode, the base electrode of the triode is connected with the drain electrode of the field effect transistor, the emitter of the triode is connected with the adjusting end of a variable resistor R4, the variable resistor R4 is connected with a resistor R3 in series, the non-common end of the resistor R3 is grounded, the non-common end and the adjusting end of the variable resistor R4 are connected, the non-common end of the variable resistor R4 is connected with the drain electrode of the field effect transistor via a resistor R2, a pin A of the chip TL431 is grounded, and a pin R of the chip TL431 is connected to the common end of the variable resistor R4 and the resistor R3. The power interface circuit has the advantages that the power stability is high, and operational reliability of the emitter mixer is ensured.
Description
Technical field
The utility model relates to a kind of power interface circuit, relates in particular a kind of power interface circuit for transmitter combiner.
Background technology
Transmitter combiner claims again transmitting antenna duplexer, between common antenna and multiple transmitter, access one group of transmission network, the device that synthetic power output of an each portion transmitter road is fed to antenna, it mainly comprises: isolator, the control of high Q resonance, power blender and impedance matching adjuster etc.The stable reliability and stability that ensure communication of transmitter combiner.In the time that the vitals of transmitter combiner is powered, the stability of its power supply is very important.
Utility model content
The utility model provides a kind of power interface circuit for transmitter combiner, and its power supply stability is high, ensures the operational reliability of transmitter combiner.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
For the power interface circuit of transmitter combiner, it comprises input circuit, the output of described input circuit is connected with voltage-multiplying circuit, the output of described voltage-multiplying circuit is connected with the source electrode of capacitor C 1 and field effect transistor simultaneously, the other end ground connection of described capacitor C 1, the source electrode of described field effect transistor is connected with grid by resistance R 1, the grid of described field effect transistor is connected on the K pin of chip TL431 and the collector electrode of triode simultaneously, the base stage of described triode is connected in the drain electrode of field effect transistor, the emitter of described triode is connected on the adjustable side of variable resistor R4, on described variable resistor, be in series with resistance R 3, the non-common end grounding of described resistance R 3, the non-common port of described variable resistor R4 is connected on adjustable side and by resistance R 2 and is connected with the drain electrode of field effect transistor, the A pin ground connection of described chip TL431 and R pin are connected on the common port of variable resistor R4 and resistance R 3.
Further technical scheme is:
As preferably, described input circuit comprises transformer and is connected to the filtering shaping circuit on transformer secondary.
Further, on described resistance R 2 and the common port of variable resistor R4, be connected with capacitor C 2, the other end ground connection of described capacitor C 2.
Compared with prior art, the beneficial effects of the utility model are:
1, in utility model; utilize input circuit and voltage-multiplying circuit to carry out preliminary treatment to the voltage signal of input; the current-limiting protection circuit consisting of field effect transistor and triode etc. again and voltage are adjusted the processing of output circuit; make the voltage stabilization of output; make the power supply of each parts in transmitter combiner stable, ensure transmitter combiner reliability of operation.
2, the utility model, by the magnitude of voltage of the adjustable output of variable resistor, makes output voltage adjustable, the scope of application of increasing circuit.
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 power interface 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 power interface circuit for transmitter combiner as shown in Figure 1, it comprises input circuit, the output of described input circuit is connected with voltage-multiplying circuit, the output of described voltage-multiplying circuit is connected with the source electrode of capacitor C 1 and field effect transistor simultaneously, the other end ground connection of described capacitor C 1, the source electrode of described field effect transistor is connected with grid by resistance R 1, the grid of described field effect transistor is connected on the K pin of chip TL431 and the collector electrode of triode simultaneously, the base stage of described triode is connected in the drain electrode of field effect transistor, the emitter of described triode is connected on the adjustable side of variable resistor R4, on described variable resistor, be in series with resistance R 3, the non-common end grounding of described resistance R 3, the non-common port of described variable resistor R4 is connected on adjustable side and by resistance R 2 and is connected with the drain electrode of field effect transistor, the A pin ground connection of described chip TL431 and R pin are connected on the common port of variable resistor R4 and resistance R 3.Be Voltage-output port at the common port of resistance R 2 of the present utility model and variable resistor R4.The alternating voltage of 220V enters this power interface circuit through input circuit, voltage-multiplying circuit amplifies the voltage of input circuit, it utilizes rectification and the guiding function of diode, and voltage is stored on electric capacity separately, then exports higher than the high voltage of input voltage.Field effect transistor, chip TL431, variable resistor R4 form voltage and adjust output circuit; Triode and resistance R 2 form current-limiting protection circuit.On the source electrode of voltage-multiplying circuit voltage-drop loading being on the scene effect after treatment pipe, and be carried on the grid of field effect transistor after electric R1 dividing potential drop, voltage stabilizing is exported through drain electrode after adjusting, and offers the each parts in inside of transmitter combiner through current resistor R2.Capacitor C 1 can absorbing peak pulse, avoids interference the impact on circuit.Chip TL431 is very ripe on the market chip, is controllable accurate source of stable pressure, and K pin is negative electrode, and A pin is anode, and R pin is with reference to the utmost point.Regulate the resistance of variable resistor R4, get final product the height of control chip TL431 with reference to utmost point reference voltage, can change the pressure value of output voltage.The pressure value of output voltage can arbitrarily be adjusted, and its usable floor area is increased.In actual utilization, it is 2 kilohms, 100 ohm, 400 ohm and 5.1 kilohms that resistance R 1, resistance R 2, resistance R 3 and resistance R 4 can adopt resistance; It is the electric capacity of 400 μ F and 470 μ F that capacitor C 1 and capacitor C 2 can adopt capacitance; Field effect transistor adopts N-type field effect transistor IRL7833, and triode adopts npn type triode C1815C945, and the electronic device of available above model forms whole circuit.
Described input circuit comprises transformer and is connected to the filtering shaping circuit on transformer secondary.Utilize transformer to carry out transformation to the alternating current of 220V, utilizing filtering shaping circuit that alternating voltage is shaped as to direct voltage, be convenient to the processing of subsequent conditioning circuit.
In order to make this circuit more stable, on described resistance R 2 and the common port of variable resistor R4, be connected with capacitor C 2, the other end ground connection of described capacitor C 2.Utilize capacitor C 2 again to absorb spike, strengthen antijamming capability, make circuit more stable.
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. for the power interface circuit of transmitter combiner, it comprises input circuit, it is characterized in that: the output of described input circuit is connected with voltage-multiplying circuit, the output of described voltage-multiplying circuit is connected with the source electrode of capacitor C 1 and field effect transistor simultaneously, the other end ground connection of described capacitor C 1, the source electrode of described field effect transistor is connected with grid by resistance R 1, the grid of described field effect transistor is connected on the K pin of chip TL431 and the collector electrode of triode simultaneously, the base stage of described triode is connected in the drain electrode of field effect transistor, the emitter of described triode is connected on the adjustable side of variable resistor R4, on described variable resistor, be in series with resistance R 3, the non-common end grounding of described resistance R 3, the non-common port of described variable resistor R4 is connected on adjustable side and by resistance R 2 and is connected with the drain electrode of field effect transistor, the A pin ground connection of described chip TL431 and R pin are connected on the common port of variable resistor R4 and resistance R 3.
2. the power interface circuit for transmitter combiner according to claim 1, is characterized in that: described input circuit comprises transformer and is connected to the filtering shaping circuit on transformer secondary.
3. the power interface circuit for transmitter combiner according to claim 1 and 2, is characterized in that: on described resistance R 2 and the common port of variable resistor R4, be connected with capacitor C 2, the other end ground connection of described capacitor C 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310080.6U CN203911903U (en) | 2014-06-12 | 2014-06-12 | Power interface circuit for emitter mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310080.6U CN203911903U (en) | 2014-06-12 | 2014-06-12 | Power interface circuit for emitter mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203911903U true CN203911903U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420310080.6U Expired - Fee Related CN203911903U (en) | 2014-06-12 | 2014-06-12 | Power interface circuit for emitter mixer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203911903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038237A (en) * | 2014-06-12 | 2014-09-10 | 四川联友电讯技术有限公司 | High-stability transmitter combiner power supply interface circuit |
-
2014
- 2014-06-12 CN CN201420310080.6U patent/CN203911903U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038237A (en) * | 2014-06-12 | 2014-09-10 | 四川联友电讯技术有限公司 | High-stability transmitter combiner power supply interface circuit |
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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 |
Granted publication date: 20141029 Termination date: 20190612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |