CN203605954U - Quotient meter circuit - Google Patents
Quotient meter circuit Download PDFInfo
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- CN203605954U CN203605954U CN201320763544.4U CN201320763544U CN203605954U CN 203605954 U CN203605954 U CN 203605954U CN 201320763544 U CN201320763544 U CN 201320763544U CN 203605954 U CN203605954 U CN 203605954U
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- 239000003990 capacitor Substances 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to the field of aviation electronic technology, specifically to a quotient meter circuit. The quotient meter circuit comprises a rectification circuit, a filter circuit, a temperature compensating electric bridge, a coil Q1, a coil Q2, a power resistor R1, and a power resistor R2, wherein the rectification circuit is formed by a diode V1 and a diode V2, a filter circuit is formed by a capacitor C1 and a capacitor C2, a temperature compensating electric bridge is formed by resistors (R3, R4, R5, R6 and R7). The rectifier diodes convert an AC full wave power supply into an AC half-wave power supply. The filter capacitors allow the AC half-wave power supply to be smoothly filtered, so as to prevent a pointer of a quotient meter from jittering. The temperature compensating electric bridge enables the quotient meter circuit to be normally and reliably operated within a temperature scope between -55 DEG C to 70 DEG C. The circuit utilizes electronic components in common use with simple structure. The circuit can be normally and reliably operated within a temperature scope between -55 DEG C to 70 DEG C. The circuit can prevent the pointer of the quotient meter from jittering.
Description
Technical field
The utility model belongs to avionics field, is specifically related to a kind of logolmeter circuit.
Background technology
Logolmeter is a kind of parts that current ratio signal converted to pointer displacement.Logolmeter adopts bridge diagram, signal (temperature, pressure) sensor is connected on respectively on the brachium pontis of respective electrical bridge circuit, the variation of measured signal forms corresponding current ratio signal through the conversion of electric bridge, then converts the displacement of pointer to through logolmeter, thereby indicates the size of dut temperature.
Conventionally the bridge diagram of logolmeter has adopted half-wave rectifying circuit in inside, due to the one-way conduction characteristic of commutation diode, when AC-input voltage is during in negative half period, output voltage is zero, now circuit and logolmeter are in off working state, pointer is got back to rapidly mechanical zero state under the effect of hairspring, because negative half period (T/2=1.25ms) time is shorter, pointer is not also got back to mechanical zero, input voltage has entered positive half cycle, pointer is in running order again, now can not stop at working position owing to thering is the kinetic energy pointer activity system that returns to working position at once, (coil cutting magnetic line in magnetic field produces induced current in the magnetic induction damping of this part kinetic energy by pointer activity system, the magnetic fields of this electric current and magnet steel produces the damping torque with coil direction of rotation) absorb.But the damping time of the pointer activity system of logolmeter is larger, be greater than the shake time interval that 4ms(human eye can catch when damping time) time, logolmeter pointer just there will be jitter phenomenon in working position.
Summary of the invention
The purpose of this utility model is: propose a kind of simple in structure, can eliminate pointer shake, logolmeter circuit that reliability is high.
The technical solution of the utility model is: a kind of logolmeter circuit, comprise the rectification circuit being formed by diode V1, V2, the filtering circuit that capacitor C 1, C2 form, the temperature compensation electric bridge that resistance R 3, R4, R5, R6, R7 form, coil Q1, Q2, power resistor R1, R2, diode V1, V2 is connected on respectively input end and capacitor C 1, between C2, capacitor C 1, C2 is connected on respectively diode V1, V2 and coil Q1, between the common port of Q2, resistance R 3, R4, pin of R5 and power resistor R1, a pin of R2 is connected in parallel, resistance R 3, a pin and the capacitor C 1 of R6 are connected in parallel, resistance R 4, a pin and the capacitor C 2 of R7 are connected in parallel, resistance R 6 is connected with coil Q1, resistance R 7 is connected with coil Q2, resistance R 5 one pins and coil Q1, the common port parallel connection of Q2, power resistor R1, a pin of R2 is in parallel with output terminal.
The anode of capacitor C 1, C2 is connected on respectively diode V1, V2 negative terminal, between the negative terminal of capacitor C 1, C2 and the common port of coil Q1, Q2, is connected in parallel.
The utility model has the advantages that: the utility model commutation diode will exchange the power supply of all-wave power supply conversion alternation, and filter capacitor is powered and carried out smothing filtering alternation, eliminates the shake of logolmeter pointer; Temperature compensation electric bridge assurance logolmeter circuit can be worked to normal reliable in the temperature range of-55 ℃～70 ℃.This circuit adopts conventional electronic devices and components, simple in structure; Energy normal reliable work in the temperature range of-55 ℃～70 ℃; Can eliminate the shake of logolmeter pointer.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Below the present invention is described in further details.With reference to figure 1.A kind of logolmeter circuit, comprises the rectification circuit being made up of diode V1, V2, the filtering circuit that capacitor C 1, C2 form, the temperature compensation electric bridge that resistance R 3, R4, R5, R6, R7 form, coil Q1, Q2, power resistor R1, R2, diode V1, V2 is connected on respectively input end 1, 2 and capacitor C 1, between C2, capacitor C 1, C2 is connected on respectively diode V1, V2 and coil Q1, between the common port of Q2, resistance R 3, R4, pin of R5 and power resistor R1, a pin of R2 is connected in parallel, resistance R 3, a pin and the capacitor C 1 of R6 are connected in parallel, resistance R 4, a pin and the capacitor C 2 of R7 are connected in parallel, resistance R 6 is connected with coil Q1, resistance R 7 is connected with coil Q2, resistance R 5 one pins and coil Q1, the common port parallel connection of Q2, power resistor R1, a pin of R2 is in parallel with output terminal 3.
The anode of capacitor C 1, C2 is connected on respectively diode V1, V2 negative terminal, between the negative terminal of capacitor C 1, C2 and the common port of coil Q1, Q2, is connected in parallel.
When AC-input voltage is during in negative half period, the V1 of half-wave rectifying circuit, the output voltage of V2 negative terminal are zero, between output voltage terminal V1, V2 negative terminal and the coil Q1 of half-wave rectifying circuit, Q2 common port, increase after capacitor C 1, C2, due to capacitor C 1, the effect of C2 smothing filtering, the operating voltage of coil Q1, Q2 is greater than zero, assurance logolmeter is in running order, and pointer can be not zero to cause shake because of operating voltage.
Claims (2)
1. a logolmeter circuit, is characterized in that, comprises the rectification circuit being made up of diode V1, V2, the filtering circuit that capacitor C 1, C2 form, the temperature compensation electric bridge that resistance R 3, R4, R5, R6, R7 form, coil Q1, Q2, power resistor R1, R2, diode V1, V2 is connected on respectively input end and capacitor C 1, between C2, capacitor C 1, C2 is connected on respectively diode V1, V2 and coil Q1, between the common port of Q2, resistance R 3, R4, pin of R5 and power resistor R1, a pin of R2 is connected in parallel, resistance R 3, a pin and the capacitor C 1 of R6 are connected in parallel, resistance R 4, a pin and the capacitor C 2 of R7 are connected in parallel, resistance R 6 is connected with coil Q1, resistance R 7 is connected with coil Q2, resistance R 5 one pins and coil Q1, the common port parallel connection of Q2, power resistor R1, a pin of R2 is in parallel with output terminal.
2. a kind of logolmeter circuit according to claim 1, is characterized in that: the anode of capacitor C 1, C2 is connected on respectively diode V1, V2 negative terminal, between the negative terminal of capacitor C 1, C2 and the common port of coil Q1, Q2, is connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763544.4U CN203605954U (en) | 2013-11-27 | 2013-11-27 | Quotient meter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763544.4U CN203605954U (en) | 2013-11-27 | 2013-11-27 | Quotient meter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203605954U true CN203605954U (en) | 2014-05-21 |
Family
ID=50718620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320763544.4U Expired - Fee Related CN203605954U (en) | 2013-11-27 | 2013-11-27 | Quotient meter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203605954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167098A (en) * | 2021-10-09 | 2022-03-11 | 北京青云航空仪表有限公司 | Method for adjusting clearance of active system of current ratio meter |
-
2013
- 2013-11-27 CN CN201320763544.4U patent/CN203605954U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167098A (en) * | 2021-10-09 | 2022-03-11 | 北京青云航空仪表有限公司 | Method for adjusting clearance of active system of current ratio meter |
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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: 20140521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |