CN109673091B - Flight control system control console indicator lamp current regulating circuit - Google Patents
Flight control system control console indicator lamp current regulating circuit Download PDFInfo
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- CN109673091B CN109673091B CN201811483729.3A CN201811483729A CN109673091B CN 109673091 B CN109673091 B CN 109673091B CN 201811483729 A CN201811483729 A CN 201811483729A CN 109673091 B CN109673091 B CN 109673091B
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- indicator lamp
- potentiometer
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- brightness
- flight control
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- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D43/00—Arrangements or adaptations of instruments
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Audible And Visible Signals (AREA)
Abstract
The invention belongs to the field of design of flight operation panels, and particularly relates to an indicator lamp current adjusting circuit for a flight control system console, which is used for adjusting the brightness of an indicator lamp of an operation button of the flight control system console. In the existing indicating lamp brightness adjusting circuit, the adjusting effect is limited, and the brightness adjusting range of the indicating lamp cannot be reached. The current regulating circuit is led out by a power supply and is grounded after passing through a first resistor and a potentiometer, the output of the potentiometer is divided into two paths, one path is connected with the negative electrode of an indicator lamp through a second resistor, the other path is connected with the base electrode of a PNP triode, the emitting electrode of the PNP triode is connected with the negative electrode of the indicator lamp, the collecting electrode of the PNP triode is connected with the base electrode of an NPN triode, the collecting electrode of the NPN triode is connected with the negative electrode of the indicator lamp, and the emitting electrode of the NPN triode is. When the flight control console works, the brightness of the control button indicator lamp can be conveniently and flexibly adjusted by manually rotating the potentiometer knob on the panel of the flight control console according to the brightness of the external environment. The circuit is simple and easy to implement.
Description
Technical Field
The invention belongs to the field of design of flight operation panels, and particularly relates to an indicator lamp current adjusting circuit for a flight control system console, which is used for adjusting the brightness of an indicator lamp of an operation button of the flight control system console.
Background
And the flight control console operation button indicator lamp is used for displaying the system working state corresponding to the pilot after operation. Under different flight conditions, the brightness requirements are different, for example, during daytime work, the brightness of the indicator light of the operating button of the flight control console is not lower than 510cd/m2And the brightness should be 3.4 + -1.7 cd/m at night2. Therefore, the flight control console is required to have the function of adjusting the brightness of the operating button indicator lamp according to the brightness condition of the external environment during working.
In the existing indicating lamp brightness adjusting circuit, the indicating lamp current is adjusted only through a potentiometer, the adjusting effect is limited, the brightness adjusting range of the indicating lamp cannot be reached, and in addition, when the indicating lamp brightness adjusting circuit is used for adjusting the brightness of a plurality of indicating lamps, the adjusting structure is complex.
Disclosure of Invention
The purpose of the invention is: the power supply current adjusting circuit for the flight control console indicator lamp meets the requirement that the flight control console indicator lamp on the operation button is suitable for different working brightness in actual use.
The technical scheme of the invention is as follows: the positive pole of the indicator lamp is connected with a power supply, the circuit adjusts the negative pole voltage of the indicator lamp, the circuit is led out from the power supply and is grounded after passing through a resistor I and a potentiometer, the output of the potentiometer is divided into two paths, one path is connected with the negative pole of the indicator lamp through a resistor II, the other path is connected with the base electrode of a PNP triode, the emitting electrode of the PNP triode is connected with the negative pole of the indicator lamp, the collecting electrode of the PNP triode is connected with the base electrode of an NPN triode, the collecting electrode of the NPN triode is connected with the negative pole of the indicator lamp, and the emitting electrode of the NPN triode is grounded.
The voltage of the power supply is 28V.
And a protection diode is also connected between the indicator lamp and the regulating circuit.
The potentiometer adopts a knob type potentiometer.
The invention has the advantages that: the power supply voltage adjusting circuit for the flight control console indicator lamp is provided, so that the brightness of the flight control console indicator lamp can be adjusted conveniently and flexibly by manually rotating a potentiometer knob on a flight control console panel according to the brightness condition of the external environment when the flight control console works. The circuit is simple and easy to implement.
Drawings
Fig. 1 is a schematic block diagram of the regulating circuit of the present invention.
Detailed Description
The present invention is described in further detail below. Referring to fig. 1, a power supply voltage regulating circuit for an indicator lamp of a flight control system console comprises a potentiometer, a current limiting resistor, a PNP triode, an NPN triode and a current limiting resistor; the potentiometer fixing end a is connected with 28V through a resistor I, the potentiometer fixing end c is grounded, and the sliding end b is connected with a resistor II and also connected with a terminal b of the PNP triode; the end a of the second resistor is connected with the low end of the indicator lamp; the end a of the PNP triode is connected with the low end of the indicator light, and the end c of the PNP triode is connected with the end b of the NPN triode; the end a of the NPN triode is connected with the low end of the indicator light, and the end c of the NPN triode is connected with the ground; the high end of the indicator lamp is connected with 28V.
The working principle of the invention is as follows:
a. when the sliding end b of the potentiometer slides to the fixed end c of the potentiometer, the resistance between the ends b and c of the potentiometer is minimum, the voltage division is minimum, and the PNP triodeb. The voltage between the ends c and the ends b and c of the NPN triode is less than the conduction voltage, the PNP triode and the NPN triode work in a cut-off region, at the moment, the current passing through the indicator lamp is approximately equal to 28V/resistance 2, and the current value is the maximum ImaxWhen the brightness of the indicator light is not lower than 510cd/m2And the brightness of the indicator light is ensured to meet the brightness requirement in daytime.
b. When the sliding end b of the potentiometer slides to the fixed end a of the potentiometer, the resistance between the ends b and c of the potentiometer is the largest, the partial voltage is the largest, the voltage between the ends b and c of the PNP triode and the voltage between the ends b and c of the NPN triode are larger than the conducting voltage, the PNP triode and the NPN triode work in an amplification area, the current passing through the indicator lamp is equal to 28V/(the resistance value of the resistor 2 + the resistance value of the potentiometer), and the current value is the minimum IminThe brightness of the indicator light is darkest and is lower than 3.4 +/-1.7 cd/m2And the pilot lamp flight control console is ensured to meet the working range at night.
c. When the sliding end b of the potentiometer slides between the fixed end a and the fixed end c of the potentiometer, the current passing through the indicator light is equal to 28V/(the resistance value of the resistor 2 + the resistance values of the potentiometer b and c), and the current value is between ImaxAnd IBetween minThe brightness of the indicator light is lower than 510cd/m2Greater than 3.4 + -1.7 cd/m2And can be flexibly adjusted.
d. The PNP triode and the NPN triode are used as a pair of tubes, and the output current of the NPN triode is larger than that of the PNP triode 3.
In one embodiment of the present invention, both the PNP transistor and the NPN transistor are implemented as finished devices (transistor 3CA3741, transistor FH 007B). The current limiting resistor is a power resistor.
Claims (1)
1. The utility model provides a flight control system control panel pilot lamp current regulation circuit, this pilot lamp positive pole and power supply connection, characterized in that: the circuit comprises a power supply, a first resistor, a second resistor, a potentiometer, a PNP triode, an NPN triode and a protection diode; the circuit regulates the cathode voltage of the indicator light, the cathode voltage is led out by a power supply and is grounded after passing through a first resistor and a potentiometer, the output of the potentiometer is divided into two paths, one path is connected with the cathode of the indicator light through a second resistor, the other path is connected with the base electrode of a PNP triode, the emitting electrode of the PNP triode is connected with the cathode of the indicator light, the collecting electrode of the PNP triode is connected with the base electrode of an NPN triode, the collecting electrode of the NPN triode is connected with the cathode of the indicator light, and the emitting electrode of the NP; the voltage of the power supply is 28V; a protection diode is also connected between the indicator lamp and the regulating circuit; the potentiometer adopts a knob type potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811483729.3A CN109673091B (en) | 2018-12-05 | 2018-12-05 | Flight control system control console indicator lamp current regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811483729.3A CN109673091B (en) | 2018-12-05 | 2018-12-05 | Flight control system control console indicator lamp current regulating circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109673091A CN109673091A (en) | 2019-04-23 |
| CN109673091B true CN109673091B (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811483729.3A Active CN109673091B (en) | 2018-12-05 | 2018-12-05 | Flight control system control console indicator lamp current regulating circuit |
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| Country | Link |
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| CN (1) | CN109673091B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112004271B (en) * | 2020-07-24 | 2022-11-18 | 西安爱生技术集团公司 | Intelligent heater of small unmanned aerial vehicle airspeed head |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202634833U (en) * | 2012-06-12 | 2012-12-26 | 潮州市晟晖陶瓷有限公司 | Diming circuit for light-emitting diode (LED) lamp |
| CN203645875U (en) * | 2013-12-04 | 2014-06-11 | 兰州飞行控制有限责任公司 | Flight control system console indicating lamp control circuit |
| CN106686830A (en) * | 2017-02-17 | 2017-05-17 | 吴建堂 | Movable type LED (Light Emitting Diode) steering lamp of car tail |
| CN207780642U (en) * | 2018-01-24 | 2018-08-28 | 江西荣力航空工业有限公司 | Regulating circuit for aircraft instrument panel illumination |
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- 2018-12-05 CN CN201811483729.3A patent/CN109673091B/en active Active
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| CN109673091A (en) | 2019-04-23 |
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