CN204244198U - A kind of overcurrent protector of brushless direct-current serifuge motor - Google Patents
A kind of overcurrent protector of brushless direct-current serifuge motor Download PDFInfo
- Publication number
- CN204244198U CN204244198U CN201420649679.2U CN201420649679U CN204244198U CN 204244198 U CN204244198 U CN 204244198U CN 201420649679 U CN201420649679 U CN 201420649679U CN 204244198 U CN204244198 U CN 204244198U
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- resistance
- potentiometer
- nand gate
- electric capacity
- triode
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Abstract
The utility model discloses a kind of overcurrent protector of brushless direct-current serifuge motor, comprise the first electric capacity, the second electric capacity, the 3rd electric capacity, the first NAND gate, the second NAND gate, the 3rd NAND gate, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first potentiometer, the second potentiometer, the 3rd potentiometer, relay, the first diode, the second diode, the first triode, the second triode and motor.The utility model structure circuit is simple, and safe and reliable, simple to operate, protecting the motor of centrifuge, make it to extend useful life, is a kind of product be worthy of popularization.
Description
Technical field
The utility model relates to a kind of overcurrent protector of electrode, particularly relates to a kind of overcurrent protector of brushless direct-current serifuge motor.
Background technology
Blood centrifugal machine, can be used for Accurate Measurement haemocyte, the a small amount of blood of precipitate and separate is also analyzed, and adds appropriate blood sample, can be centrifugal to required requirement in very short time, a lot of bad manufacturer in order to allow at centrifuge maximum imbalance limitation this index on compete with other producers, provide higher value, on this higher value, machine can operate as far as possible, but the out-of-balance force at this moment produced impacts bearing and support suddenly with n secondary frequencies per minute, very large to the motor infringement of centrifuge.
Utility model content
The purpose of this utility model is just the overcurrent protector providing a kind of brushless direct-current serifuge motor in order to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The overcurrent protector of a kind of brushless direct-current serifuge of the utility model motor, is characterized in that: comprise the first electric capacity, second electric capacity, 3rd electric capacity, first NAND gate, second NAND gate, 3rd NAND gate, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, first potentiometer, second potentiometer, 3rd potentiometer, relay, first diode, second diode, first triode, second triode and motor, the voltage input end of power supply simultaneously with the first end of described first electric capacity, the first end of described first resistance, the first end of described second resistance, the first end of described relay, the main control end of the relay switch of described relay is connected with the negative pole of described first diode, second end of described first electric capacity is connected with the first end of described 5th resistance and the input of described first NAND gate simultaneously, the output of described first NAND gate is connected with the first input end of described 3rd NAND gate, second end of described first resistance is connected with the first end of described first potentiometer and the sliding end of described first potentiometer simultaneously, second end of described first potentiometer is connected with the collector electrode of described first triode and the input of described second NAND gate simultaneously, the output of described second NAND gate is connected with the first end of described 3rd potentiometer and the negative pole of described second diode simultaneously, with the second end of described 3rd potentiometer while of the positive pole of described second diode, the sliding end of described 3rd potentiometer, the first end of described 3rd electric capacity is connected with the second input of described 3rd NAND gate, the collector electrode of described first triode simultaneously with the second end of described 6th resistance, second end of described second electric capacity is connected with the second end of described motor, the transmitting terminal of described first triode simultaneously with the second end of described 3rd electric capacity, the first end of described second electric capacity, the first end of described 6th resistance, second end of described second potentiometer, the sliding end of described second potentiometer, the voltage output end of described power supply is connected with the collector electrode of described second triode, the first end of described second potentiometer is connected with the second end of described 5th resistance, the output of described 3rd NAND gate is connected with the first end of described 3rd resistance, second end of described 3rd resistance is connected with the first end of described 4th resistance and the base stage of described second triode simultaneously, the transmitting terminal of described second triode is connected with the second end of described relay and the positive pole of described first diode simultaneously, second end of described 4th resistance is connected with the first end of the relay switch of described relay, and the second end of the relay switch of described relay is connected with the second end of described second resistance and the first end of described motor simultaneously.
The beneficial effects of the utility model are:
The utility model structure circuit is simple, and safe and reliable, simple to operate, protecting the motor of centrifuge, make it to extend useful life, is a kind of product be worthy of popularization.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the overcurrent protector of a kind of brushless direct-current serifuge of the utility model motor, comprises the first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, first NAND gate X1, second NAND gate X2, 3rd NAND gate X3, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, first potentiometer RP1, second potentiometer RP2, 3rd potentiometer RP3, relay K, first diode D1, second diode D2, first triode Q1, second triode Q2 and motor M, the voltage input end of power supply simultaneously with the first end of the first electric capacity C1, the first end of the first resistance R1, the first end of the second resistance R2, the first end of relay K, the main control end of the relay switch K1-1 of relay is connected with the negative pole of the first diode D1, second end of the first electric capacity C1 is connected with the first end of the 5th resistance R5 and the input of the first NAND gate X1 simultaneously, the output of the first NAND gate X1 is connected with the first input end of the 3rd NAND gate X3, second end of the first resistance R1 is connected with the first end of the first potentiometer RP1 and the sliding end of the first potentiometer RP1 simultaneously, second end of the first potentiometer RP1 is connected with the collector electrode of the first triode Q1 and the input of the second NAND gate X2 simultaneously, the output of the second NAND gate X2 is connected with the first end of the 3rd potentiometer RP3 and the negative pole of the second diode D2 simultaneously, with second end of the 3rd potentiometer RP3 while of the positive pole of the second diode D2, the sliding end of the 3rd potentiometer RP3, the first end of the 3rd electric capacity C3 is connected with second input of the 3rd NAND gate X3, the collector electrode of the first triode Q1 simultaneously with second end of the 6th resistance R6, second end of the second electric capacity C2 is connected with second end of motor M, the transmitting terminal of the first triode Q1 simultaneously with second end of the 3rd electric capacity C3, the first end of the second electric capacity C2, the first end of the 6th resistance R6, second end of the second potentiometer RP2, the sliding end of the second potentiometer RP2, the voltage output end of power supply is connected with the collector electrode of the second triode Q3, the first end of the second potentiometer RP2 is connected with second end of the 5th resistance R5, the output of the 3rd NAND gate X3 is connected with the first end of the 3rd resistance R3, second end of the 3rd resistance R3 is connected with the first end of the 4th resistance R4 and the base stage of the second triode Q2 simultaneously, the transmitting terminal of the second triode Q2 is connected with the second end of relay K and the positive pole of the first diode D1 simultaneously, second end of the 4th resistance R4 is connected with the first end of the relay switch K1-1 of relay, and second end of the relay switch K1-1 of relay is connected with second end of the second resistance R2 and the first end of motor M simultaneously.
6th resistance R6 of the present utility model is current sampling resistor, in order to the big current preventing motor from producing when starting, cause the malfunction of circuit, by the first electric capacity Cl, 5th resistance R5, second potentiometer RP2 and the first NAND gate X1 constitutes power-on protection delay circuit, when motor M starts to start, no-voltage on first electric capacity Cl, now with the first NAND gate X1 output low level, 3rd NAND gate X3 then exports high level, the second triode Q2 is made to be in cut-off state, relay K does not work, its contact still keeps normally off, direct current machine M can obtain normal power supply, when the terminal voltage of the first electric capacity C1 is elevated to certain value gradually, first NAND gate X1 overturns, output becomes high level, the power cut-off of power-on protection start-up circuit, after this output state of the 3rd NAND gate X3 is then by the first potentiometer RP1, first resistance R1, the current detection circuit of the composition such as the first triode Q1 and the 6th resistance R6 controls.
Claims (1)
1. an overcurrent protector for brushless direct-current serifuge motor, is characterized in that: comprise the first electric capacity, second electric capacity, 3rd electric capacity, first NAND gate, second NAND gate, 3rd NAND gate, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, first potentiometer, second potentiometer, 3rd potentiometer, relay, first diode, second diode, first triode, second triode and motor, the voltage input end of power supply simultaneously with the first end of described first electric capacity, the first end of described first resistance, the first end of described second resistance, the first end of described relay, the main control end of the relay switch of described relay is connected with the negative pole of described first diode, second end of described first electric capacity is connected with the first end of described 5th resistance and the input of described first NAND gate simultaneously, the output of described first NAND gate is connected with the first input end of described 3rd NAND gate, second end of described first resistance is connected with the first end of described first potentiometer and the sliding end of described first potentiometer simultaneously, second end of described first potentiometer is connected with the collector electrode of described first triode and the input of described second NAND gate simultaneously, the output of described second NAND gate is connected with the first end of described 3rd potentiometer and the negative pole of described second diode simultaneously, with the second end of described 3rd potentiometer while of the positive pole of described second diode, the sliding end of described 3rd potentiometer, the first end of described 3rd electric capacity is connected with the second input of described 3rd NAND gate, the collector electrode of described first triode simultaneously with the second end of described 6th resistance, second end of described second electric capacity is connected with the second end of described motor, the transmitting terminal of described first triode simultaneously with the second end of described 3rd electric capacity, the first end of described second electric capacity, the first end of described 6th resistance, second end of described second potentiometer, the sliding end of described second potentiometer, the voltage output end of described power supply is connected with the collector electrode of described second triode, the first end of described second potentiometer is connected with the second end of described 5th resistance, the output of described 3rd NAND gate is connected with the first end of described 3rd resistance, second end of described 3rd resistance is connected with the first end of described 4th resistance and the base stage of described second triode simultaneously, the transmitting terminal of described second triode is connected with the second end of described relay and the positive pole of described first diode simultaneously, second end of described 4th resistance is connected with the first end of the relay switch of described relay, and the second end of the relay switch of described relay is connected with the second end of described second resistance and the first end of described motor simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649679.2U CN204244198U (en) | 2014-11-03 | 2014-11-03 | A kind of overcurrent protector of brushless direct-current serifuge motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649679.2U CN204244198U (en) | 2014-11-03 | 2014-11-03 | A kind of overcurrent protector of brushless direct-current serifuge motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204244198U true CN204244198U (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420649679.2U Expired - Fee Related CN204244198U (en) | 2014-11-03 | 2014-11-03 | A kind of overcurrent protector of brushless direct-current serifuge motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204244198U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363009A (en) * | 2014-11-03 | 2015-02-18 | 成都美益达医疗科技有限公司 | Overcurrent protector of brushless direct-current serum centrifuge |
| CN109300740A (en) * | 2018-11-16 | 2019-02-01 | 广州科伺智能科技有限公司 | A kind of control circuit and its control method of relay and solenoid valve |
-
2014
- 2014-11-03 CN CN201420649679.2U patent/CN204244198U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363009A (en) * | 2014-11-03 | 2015-02-18 | 成都美益达医疗科技有限公司 | Overcurrent protector of brushless direct-current serum centrifuge |
| CN109300740A (en) * | 2018-11-16 | 2019-02-01 | 广州科伺智能科技有限公司 | A kind of control circuit and its control method of relay and solenoid valve |
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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: 20150401 Termination date: 20151103 |
|
| EXPY | Termination of patent right or utility model |