CN101499749B - Slow starting control circuit for DC motor - Google Patents
Slow starting control circuit for DC motor Download PDFInfo
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- CN101499749B CN101499749B CN2009100141780A CN200910014178A CN101499749B CN 101499749 B CN101499749 B CN 101499749B CN 2009100141780 A CN2009100141780 A CN 2009100141780A CN 200910014178 A CN200910014178 A CN 200910014178A CN 101499749 B CN101499749 B CN 101499749B
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Abstract
The invention discloses a control circuit for the delay starting of a direct-current (DC) starting motor, comprising an accumulator. The accumulator is respectively connected with the DC starting motor M by a gear control input circuit and a starting input circuit, and the starting input circuit is provided with a control switch S1. The circuit is characterized in that the gear control input circuit is provided with a resistance R1 and a silicon controlled rectifier Q1 which are connected in parallel with each other; the silicon controlled rectifier Q1 is connected with a delay control circuit; and the voltage input terminal of the delay control circuit is connected with the starting input circuit. The circuit leads the rotation speed of the gear of the DC starting motor to have a gradual increment process from slowness to fastness, prevents the damage of the gear due to excessively fast initial rotation speed and avoids unnecessary loss. The circuit has smart concept, simple structure and low preparation cost, effectively solves the technical problem that the rotation speed of the gear is excessively fast during the starting process of the DC starting motor and prolongs the service life of the DC starting motor.
Description
Technical field
The present invention relates to the control of DC circuit, specifically, relate to a kind of slow starting control circuit for DC motor.
Background technology
At present, existing direct current machine starts the general employing of control circuit structure as shown in Figure 1, among Fig. 1; Storage battery directly is loaded on the gear control circuit of direct current machine through gear control input circuit 1 ', and in addition, storage battery also connects direct current machine M ' through the startup input circuit 2 ' of switch S 2 controls; During direct current machine M ' work, press switch S 2, start input voltage and deliver to direct current machine M ' inside; Simultaneously; Battery tension is loaded on the gear control circuit, drives the motor gear quick rotation, thereby direct current machine starts.But; This Starting mode of direct current machine is owing to initially directly be loaded into battery tension on the gear control circuit; Cause gear to rotate too fast and abrased gear, reduce the useful life of direct current machine, cause unnecessary economic loss; Sometimes even have phenomenon such as gear interlock and take place, cause normally drive load equipment work of direct current machine.This is the weak point of prior art.
Summary of the invention
Main purpose of the present invention is the deficiency that exists to prior art; A kind of slow starting control circuit for DC motor is provided; Make the gear rotational speed of direct current machine that an increasing process from slow to fast arranged, prevent that the gear initial speed is too fast and suffer damage, avoid unnecessary loss.
The present invention adopts following technical scheme to realize goal of the invention:
A kind of slow starting control circuit for DC motor; Comprise storage battery; Said storage battery connects direct current machine M through gear control input circuit and startup input circuit respectively, and said startup input circuit is provided with control switch S1, it is characterized in that: said gear control input circuit is provided with parallel resistor R1 and controllable silicon Q1; The angle of flow of said controllable silicon Q1 connects delay control circuit, and said delay control circuit voltage input end is connected and starts on the input circuit.
Said delay control circuit comprises voltage stabilizing circuit, bistable state timing circuit, RC delay circuit and high frequency transformer T; Said startup input circuit voltage is transported to voltage stabilizing circuit; The burning voltage of said voltage stabilizing circuit output is loaded into bistable state timing circuit and RC delay circuit simultaneously; The bistable state timing circuit is started working under the control of RC delay circuit, and output bistable state square wave is given high frequency transformer T.
Said voltage stabilizing circuit comprises diode D1, NPN type triode Q2, resistance R 7 and voltage-stabiliser tube D3; The collector electrode of the negative electrode of said diode D1, NPN type triode Q2, an end of resistance R 7 are connected to and start on the input circuit; The base stage of NPN type triode Q2 connects the negative pole of resistance R 7 and voltage-stabiliser tube D3 respectively; The emitter of said NPN type triode Q2 connects the voltage input end of bistable state timing circuit, RC delay circuit and the anode of diode D1 respectively, and the positive pole of said voltage-stabiliser tube D3 connects battery terminal negative.
Said bistable state timing circuit comprises chip Q4, resistance R 2, R3, R6, and capacitor C 1, C2; Be loaded into the voltage pin 8 of chip Q4 from the burning voltage of said voltage stabilizing circuit output; And be loaded into the pin 4 of chip Q4 through resistance R 3, and be connected with resistance R 2 between the pin 7 and 8 of chip Q4, be connected with resistance R 6 between the pin 6 and 7 of chip Q4; The pin 2 of chip Q4 is connected battery terminal negative through capacitor C 2 simultaneously with 6, and the pin 3 of chip Q4 connects high frequency transformer T through capacitor C 1.
Said chip Q4 is 555 chips.
Said RC delay circuit comprises capacitor C 3, NPN type triode Q3, resistance R 4, R5; Be loaded into the positive pole of capacitor C 3 from the burning voltage of said voltage stabilizing circuit output; The negative pole of capacitor C 3 is through the base stage of resistance R 4 connection triode Q3, and the collector electrode of triode Q3 connects the pin 4 of chip Q4, and emitter connects the negative pole of storage battery; Resistance R 5 one ends connect the base stage of triode Q3, and the other end connects the negative pole of storage battery.
Compared with prior art; Advantage of the present invention and good effect are: the present invention is provided with divider resistance R1 on gear control input circuit; Be used to reduce and be carried in the voltage on the gear control circuit when direct current machine starts; Resistance R 1 two ends also are connected to controllable silicon Q1, and the silicon controlled angle of flow is controlled by a delay control circuit.When pressing switch S 1; Start input voltage and deliver to direct current machine inside; Battery tension is delivered to through resistance R 1 on the gear control circuit of direct current machine, because current limliting and the dividing potential drop effect of R1 are slowly rotated the inner gear of direct current machine; The quick rotation of gear when having avoided directly adding battery tension causes gear to rotate overshoot and phenomenons such as the interlock generation of abrased gear or gear.When pressing starting switch; Start input voltage and also be loaded into delay control circuit simultaneously; Delay control circuit work, the conducting of control controllable silicon is equivalent to R1 like this by short circuit; With delivering to direct current machine after the step-down of battery tension process controllable silicon, make the inner gear of direct current machine continue slowly to rotate.The controllable silicon conducting is equivalent to the R1 short circuit, can avoid resistance R 1 long-term in running order and damage like this.In addition, the present invention is skillfully constructed, and is simple in structure, cheap, efficiently solves direct current machine and starts the too fast technical problem of process gear rotational speed, prolonged the useful life of direct current machine.
Description of drawings
Fig. 1 is that the direct current machine of prior art starts electrical block diagram.
Fig. 2 is the structural representation of the preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment the present invention is made detailed description further.
Referring to Fig. 1; Storage battery of the present invention connects direct current machine M through gear control input circuit and startup input circuit respectively; Start input circuit and be provided with control switch S1; Gear control input circuit is provided with parallel resistor R1 and controllable silicon Q1, and the angle of flow of controllable silicon Q1 connects delay control circuit, and the voltage input end of delay control circuit is connected and starts on the input circuit.
Said delay control circuit comprises voltage stabilizing circuit, bistable state timing circuit, RC delay circuit and high frequency transformer T; Start input circuit voltage and be transported to voltage stabilizing circuit; The burning voltage of voltage stabilizing circuit output is loaded into bistable state timing circuit and RC delay circuit simultaneously; The bistable state timing circuit is started working under the control of RC delay circuit, and output bistable state square wave is given high frequency transformer T.
Said voltage stabilizing circuit comprises diode D1, NPN type triode Q2, resistance R 7 and voltage-stabiliser tube D3; The collector electrode of the negative electrode of said diode D1, NPN type triode Q2, an end of resistance R 7 are connected to and start on the input circuit; The base stage of NPN type triode Q2 connects the negative pole of resistance R 7 and voltage-stabiliser tube D3 respectively; The emitter of said NPN type triode Q2 connects the voltage input end of bistable state timing circuit, RC delay circuit and the anode of diode D1 respectively, and the positive pole of said voltage-stabiliser tube D3 connects battery terminal negative.
Said bistable state timing circuit comprises chip Q4, resistance R 2, R3, R6; And capacitor C 1, C2, be loaded into the voltage pin 8 of chip Q4 from the burning voltage of said voltage stabilizing circuit output, and be loaded into the pin 4 of chip Q4 through resistance R 3; Be connected with resistance R 2 between the pin 7 and 8 of chip Q4; Be connected with resistance R 6 between the pin 6 and 7 of chip Q4, the pin 2 of chip Q4 is connected battery terminal negative through capacitor C 2 simultaneously with 6, and the pin 3 of chip Q4 connects high frequency transformer T through capacitor C 1.The chip Q4 that this preferred embodiment adopts is 555 chips.
Said RC delay circuit comprises capacitor C 3, NPN type triode Q3, resistance R 4, R5; Be loaded into the positive pole of capacitor C 3 from the burning voltage of said voltage stabilizing circuit output; The negative pole of capacitor C 3 is through the base stage of resistance R 4 connection triode Q3, and the collector electrode of triode Q3 connects 555 pin of chip 4, and emitter connects the negative pole of storage battery; Resistance R 5 one ends connect the base stage of triode Q3, and the other end connects the negative pole of storage battery.
Workflow of the present invention is: press starting switch S1, start input voltage and deliver to direct current machine M inside, input voltage is delivered on the gear control circuit of direct current machine M through resistance R 1.Because the current limliting and the dividing potential drop effect of resistance R 1 make the inner gear of direct current machine slowly rotate the quick rotation of gear when having avoided directly adding direct voltage.When pressing starting switch S1; Start input voltage and also be loaded into resistance R 7, triode Q2, diode D1 and voltage-stabiliser tube D3, voltage-stabiliser tube D3 is stabilized to a certain magnitude of voltage with voltage, is loaded into the voltage pin 8 of 555 chip Q4 through triode Q2; The bistable state timing circuit work that 555 chip Q4, resistance R 2, R3, R6, capacitor C 1, C2 are formed; But because the resetting pin 4 (R pin) of 555 chip Q4 is drawn high by resistance R 3, cause chip Q4 to be reset, chip Q4 does not work.When being loaded into the power pins 8 of chip Q4 by the stable voltage of voltage-stabiliser tube D3; Also be loaded on the RC delay circuit of capacitor C 3, resistance R 4, R5 formation; Through after the time-delay of certain hour, make triode Q3 conducting, the resetting pin 4 (R pin) of chip Q4 is dragged down; Q4 begins operate as normal, produces a series of bistable state square wave.The bistable state square wave that chip Q4 produces arrives high frequency transformer T through pin 3 (Q pin) output through capacitor C 1, the angle of flow of control controllable silicon Q1; Controllable silicon Q1 conducting is equivalent to resistance R 1 like this by short circuit, delivers to direct current machine after the battery tension process controllable silicon Q1 step-down; Make the inner gear of direct current machine continue slowly to rotate; The conducting of controllable silicon Q1, the R1 short circuit can avoid resistance R 1 long-term in running order and damage like this.
Certainly, above-mentioned explanation is not a limitation of the present invention, and the present invention also is not limited only to above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also belong to protection scope of the present invention.
Claims (4)
1. slow starting control circuit for DC motor; Comprise storage battery; Said storage battery connects direct current machine M through gear control input circuit and startup input circuit respectively; Said startup input circuit is provided with control switch S1, it is characterized in that: said gear control input circuit is provided with parallel resistor R1 and controllable silicon Q1, and the control utmost point of said controllable silicon Q1 connects delay control circuit; Said delay control circuit voltage input end is connected and starts on the input circuit; Said delay control circuit comprises voltage stabilizing circuit, bistable state timing circuit, RC delay circuit and high frequency transformer T, and said startup input circuit voltage is transported to voltage stabilizing circuit, and the burning voltage of said voltage stabilizing circuit output is loaded into bistable state timing circuit and RC delay circuit simultaneously; The bistable state timing circuit is started working under the control of RC delay circuit, and output bistable state square wave is given high frequency transformer T.
2. according to the said slow starting control circuit for DC motor of claim 1; It is characterized in that: said voltage stabilizing circuit comprises diode D1, NPN type triode Q2, resistance R 7 and voltage-stabiliser tube D3; The collector electrode of the negative electrode of said diode D1, NPN type triode Q2, an end of resistance R 7 are connected to and start on the input circuit; The base stage of NPN type triode Q2 connects the other end of resistance R 7 and the negative pole of voltage-stabiliser tube D3 respectively; The emitter of said NPN type triode Q2 connects the voltage input end of bistable state timing circuit, RC delay circuit and the anode of diode D1 respectively, and the positive pole of said voltage-stabiliser tube D3 connects battery terminal negative.
3. according to the said slow starting control circuit for DC motor of claim 1; It is characterized in that: said bistable state timing circuit comprises 555 chip Q4; Resistance R 2, R3, R6; And capacitor C 1, C2, be loaded into the power pins VCC of 555 chip Q4 from the burning voltage of said voltage stabilizing circuit output, and be loaded into the reset pin RESET of 555 chip Q4 through resistance R 3; Be connected with resistance R 2 between the discharge pin DISCHARGE of 555 chip Q4 and the power pins VCC; The triggering input pin TRIGGER that is connected with resistance R 6,555 chip Q4 between the threshold value pin THRESHOLD of 555 chip Q4 and the discharge pin DISCHARGE is connected battery terminal negative through capacitor C 2 simultaneously with threshold value pin THRESHOLD, and the output pin OUTPUT of 555 chip Q4 connects high frequency transformer T through capacitor C 1.
4. according to the said slow starting control circuit for DC motor of claim 1; It is characterized in that: said RC delay circuit comprises capacitor C 3, NPN type triode Q3, resistance R 4, R5; Be loaded into the positive pole of capacitor C 3 from the burning voltage of said voltage stabilizing circuit output; The negative pole of capacitor C 3 is through the base stage of resistance R 4 connection triode Q3, and the collector electrode of triode Q3 connects the pin 4 of 555 chip Q4, and emitter connects the negative pole of storage battery; Resistance R 5 one ends connect the base stage of triode Q3, and the other end connects the negative pole of storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100141780A CN101499749B (en) | 2009-02-24 | 2009-02-24 | Slow starting control circuit for DC motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100141780A CN101499749B (en) | 2009-02-24 | 2009-02-24 | Slow starting control circuit for DC motor |
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| Publication Number | Publication Date |
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| CN101499749A CN101499749A (en) | 2009-08-05 |
| CN101499749B true CN101499749B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100141780A Active CN101499749B (en) | 2009-02-24 | 2009-02-24 | Slow starting control circuit for DC motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110071696B (en) * | 2019-04-24 | 2023-06-09 | 聚辰半导体股份有限公司 | Continuous time integrator for temperature sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87215144U (en) * | 1987-12-05 | 1988-09-07 | 孙克恂 | Choked starter for electric motors |
| US5254916A (en) * | 1992-07-31 | 1993-10-19 | Sgs-Thomson Microelectronics, Inc. | Windshield wiper speed and delay control |
| CN2202271Y (en) * | 1994-10-25 | 1995-06-28 | 宋一鸣 | Soft starting controller for air conditioners |
| CN1563696A (en) * | 2004-04-02 | 2005-01-12 | 梅一峰 | Starter of diesel engine |
| CN201365214Y (en) * | 2009-02-24 | 2009-12-16 | 山东精久科技有限公司 | Direct current motor delay start control circuit |
-
2009
- 2009-02-24 CN CN2009100141780A patent/CN101499749B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87215144U (en) * | 1987-12-05 | 1988-09-07 | 孙克恂 | Choked starter for electric motors |
| US5254916A (en) * | 1992-07-31 | 1993-10-19 | Sgs-Thomson Microelectronics, Inc. | Windshield wiper speed and delay control |
| CN2202271Y (en) * | 1994-10-25 | 1995-06-28 | 宋一鸣 | Soft starting controller for air conditioners |
| CN1563696A (en) * | 2004-04-02 | 2005-01-12 | 梅一峰 | Starter of diesel engine |
| CN201365214Y (en) * | 2009-02-24 | 2009-12-16 | 山东精久科技有限公司 | Direct current motor delay start control circuit |
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| CN101499749A (en) | 2009-08-05 |
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