CN203301429U - Current amplifier applied to plane power supply - Google Patents
Current amplifier applied to plane power supply Download PDFInfo
- Publication number
- CN203301429U CN203301429U CN2013203667111U CN201320366711U CN203301429U CN 203301429 U CN203301429 U CN 203301429U CN 2013203667111 U CN2013203667111 U CN 2013203667111U CN 201320366711 U CN201320366711 U CN 201320366711U CN 203301429 U CN203301429 U CN 203301429U
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- CN
- China
- Prior art keywords
- amplifier
- resistance
- triode
- input
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a current amplifier applied to a plane power supply. The current amplifier comprises a first amplifier, a second amplifier, a first triode, a second triode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor. The in-phase input end of the first amplifier is a signal input end, the anti-phase input end of the first amplifier is connected with the signal output end of the first amplifier and the in-phase input end of the second amplifier respectively, and the negative pole input end of the first amplifier is connected with the positive pole output end of the second amplifier and the first end of the third resistor. Currents of the power supply are amplified by two stages of amplifying circuit parts and an emitter part and then are output so that the current amplifier has a stable working state.
Description
Technical field
The utility model relates to a kind of for the current amplifier on aircraft, relates in particular to a kind of for the current amplifier on aircraft power supply.
Background technology
The power supply size that can carry on aircraft has certain limit, but the needed operating current of most electrical appliance is very large, and the electric current that only provides by power supply can not reach, so need to the electric current that power supply provides be amplified by current amplifier.Currently used current amplifier exists the shortcoming that operating state is stable not mostly.
The utility model content
The purpose of this utility model with regard to be to provide in order to address the above problem a kind of stable working state for the current amplifier on aircraft power supply.
The utility model is achieved through the following technical solutions above-mentioned purpose:
a kind of for the current amplifier on aircraft power supply, comprise the first amplifier, the second amplifier, the first triode, the second triode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance, the in-phase input end of described the first amplifier is signal input part, the inverting input of described the first amplifier is connected with the in-phase input end of described the second amplifier with the signal output part of described the first amplifier respectively, the negative input of described the first amplifier is connected with the first end of described the 3rd resistance with the cathode output end of described the second amplifier respectively, the negative input of described the first amplifier is the voltage negative input, the electrode input end of described the first amplifier respectively with the electrode input end of described the second amplifier, the first end of described the first resistance, the collector electrode of described the first triode is connected with the collector electrode of described the second triode, the electrode input end of described the second amplifier is the positive polarity input, the inverting input of described the second amplifier is connected with the first end of described the 5th resistance with the first end of described the 4th resistance respectively, the second end of described the 3rd resistance is connected rear ground connection with the second end of described the 4th resistance and the first end of described the 6th resistance respectively, the second end of described the 5th resistance is connected with the first end of described the second resistance with the signal output part of described the second amplifier respectively, the second end of described the second resistance is connected with the base stage of described the first triode with the second end of described the first resistance respectively, the emitter of described the first triode is connected with the base stage of described the second triode, the emitter of described the second triode is connected with the second end of described the 6th resistance, the emission of described the second triode is voltage output end very.
The beneficial effects of the utility model are:
The utility model is a kind of for the current amplifier on aircraft power supply, adopts two-stage amplification circuits and emitter-base bandgap grading partly the electric current of power supply to be amplified to rear output, the stable working state of this current amplifier.
The accompanying drawing explanation
Fig. 1 is a kind of circuit diagram for the current amplifier on aircraft power supply of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
as shown in Figure 1, the utility model is a kind of for the current amplifier on aircraft power supply, comprise the first amplifier U1, the second amplifier U2, the first triode VT1, the second triode VT2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5 and the 6th resistance R 6, the in-phase input end of the first amplifier U1 is signal input part, the inverting input of the first amplifier U1 is connected with the in-phase input end of the second amplifier U2 with the signal output part of the first amplifier U1 respectively, the negative input of the first amplifier U1 is connected with the first end of the 3rd resistance R 3 with the cathode output end of the second amplifier U2 respectively, the negative input of the first amplifier U1 is the voltage negative input, the electrode input end of the first amplifier U1 respectively with the electrode input end of the second amplifier U2, the first end of the first resistance R 1, the collector electrode of the first triode VT1 is connected with the collector electrode of the second triode VT2, the electrode input end of the second amplifier U2 is the positive polarity input, the inverting input of the second amplifier U2 is connected with the first end of the 5th resistance R 5 with the first end of the 4th resistance R 4 respectively, the second end of the 3rd resistance R 3 is connected rear ground connection with the second end of the 4th resistance R 4 and the first end of the 6th resistance R 6 respectively, the second end of the 5th resistance R 5 is connected with the first end of the second resistance R 2 with the signal output part of the second amplifier U2 respectively, the second end of the second resistance R 2 is connected with the base stage of the first triode VT1 with the second end of the first resistance R 1 respectively, the emitter of the first triode VT1 is connected with the base stage of the second triode VT2, the emitter of the second triode VT2 is connected with the second end of the 6th resistance R 6, the emission of the second triode VT2 is voltage output end very.
Use a kind of operation principle for the current amplifier on aircraft power supply of the utility model as follows:
The utility model current amplifier mainly comprises two-stage amplification circuits and two emitter-base bandgap grading parts that triode forms of the high gain operational amplifier composition that two models are μ A741, first order amplifying circuit is the negative feedback buffer circuit, in order to reduce output resistance and the amplification frequency frequency range increased, second level amplifying circuit is for forming the amplifying circuit of voltage forward ratio, signal of telecommunication access emitter-base bandgap grading part after two-stage is amplified, the electric current after output is amplified.
Claims (1)
1. one kind for the current amplifier on aircraft power supply, it is characterized in that: comprise the first amplifier, the second amplifier, the first triode, the second triode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance, the in-phase input end of described the first amplifier is signal input part, the inverting input of described the first amplifier is connected with the in-phase input end of described the second amplifier with the signal output part of described the first amplifier respectively, the negative input of described the first amplifier is connected with the first end of described the 3rd resistance with the cathode output end of described the second amplifier respectively, the negative input of described the first amplifier is the voltage negative input, the electrode input end of described the first amplifier respectively with the electrode input end of described the second amplifier, the first end of described the first resistance, the collector electrode of described the first triode is connected with the collector electrode of described the second triode, the electrode input end of described the second amplifier is the positive polarity input, the inverting input of described the second amplifier is connected with the first end of described the 5th resistance with the first end of described the 4th resistance respectively, the second end of described the 3rd resistance is connected rear ground connection with the second end of described the 4th resistance and the first end of described the 6th resistance respectively, the second end of described the 5th resistance is connected with the first end of described the second resistance with the signal output part of described the second amplifier respectively, the second end of described the second resistance is connected with the base stage of described the first triode with the second end of described the first resistance respectively, the emitter of described the first triode is connected with the base stage of described the second triode, the emitter of described the second triode is connected with the second end of described the 6th resistance, the emission of described the second triode is voltage output end very.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203667111U CN203301429U (en) | 2013-06-25 | 2013-06-25 | Current amplifier applied to plane power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203667111U CN203301429U (en) | 2013-06-25 | 2013-06-25 | Current amplifier applied to plane power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301429U true CN203301429U (en) | 2013-11-20 |
Family
ID=49577409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203667111U Expired - Lifetime CN203301429U (en) | 2013-06-25 | 2013-06-25 | Current amplifier applied to plane power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301429U (en) |
-
2013
- 2013-06-25 CN CN2013203667111U patent/CN203301429U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |
|
| CX01 | Expiry of patent term |