CN203397129U - Starting circuit for industrial motor control devices - Google Patents
Starting circuit for industrial motor control devices Download PDFInfo
- Publication number
- CN203397129U CN203397129U CN201320444880.2U CN201320444880U CN203397129U CN 203397129 U CN203397129 U CN 203397129U CN 201320444880 U CN201320444880 U CN 201320444880U CN 203397129 U CN203397129 U CN 203397129U
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- Prior art keywords
- resistance
- capacitor
- resistor
- electric capacity
- triode
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- Expired - Fee Related
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Abstract
The utility model discloses a starting circuit for industrial motor control devices. The starting circuit comprises a transistor, a diode, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor and a fourth resistor. The voltage positive electrode input end is connected with the first end of the first resistor and the first end of the third resistor respectively. The second end of the third resistor is connected with the collector of the transistor and the first end of the third capacitor respectively. The second end of the third capacitor is connected with the negative electrode of the diode and the first end of the fourth resistor respectively. The positive electrode of the diode is a signal input end. The second end of the fourth resistor is connected with the emitter of the transistor and the first end of the second capacitor respectively and then is grounded. The base of the transistor is connected with the first end of the second capacitor, the first end of the second resistor, the second end of the first resistor and the first end of the first capacitor respectively. The second end of the first capacitor is connected with the second end of the second resistor. The starting circuit for industrial motor control devices of the utility model has advantages of simple circuit structure and good stability.
Description
Technical field
The utility model relates to a kind of start-up circuit, relates in particular to a kind of start-up circuit for industrial motor control device.
Background technology
The general start-up circuit using in common factory is after connecting the circuit of starter motor electromagnet, electromagnet produces adhesive, drive the gear of starter motor to do spiral helicine axially-movable, thereby by the canine tooth engagement of the gear of starter motor and flywheel, when starter motor electromagnetic actuation, also link with the contact of a large electric current in the inside, that is to say and connected the large electric current that starts use simultaneously, allow motor to be far longer than the strength starting engine of engine start resistance, the shortcomings such as the stability that general start-up circuit exists startup is inadequate, circuit structure complexity.
Utility model content
A kind of circuit structure is simple, the start-up circuit for industrial motor control device of good stability with regard to being to provide in order to address the above problem for the purpose of this utility model.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of start-up circuit for industrial motor control device, comprise triode, diode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first resistance, the second resistance, the 3rd resistance and the 4th resistance, positive polarity input end is connected with the first end of described the 3rd resistance with the first end of described the first resistance respectively, the second end of described the 3rd resistance is connected with the first end of described the 3rd electric capacity with the collector of described triode respectively, the second end of described the 3rd electric capacity is connected with the first end of described the 4th resistance with the negative pole of described diode respectively, the just very signal input part of described diode, ground connection after the second end of described the 4th resistance is connected with the emitter of described triode and the first end of described the second electric capacity respectively, the base stage of described triode respectively with the first end of described the second electric capacity, the first end of described the second resistance, the second end of described the first resistance is connected with the first end of described the first electric capacity, the second end of described the first electric capacity is connected with the second end of described the second resistance, the second end of described the second resistance is voltage negative input.
The beneficial effects of the utility model are:
The utility model is for the start-up circuit of industrial motor control device, after power connection, the collector potential of triode first promptly rises to certain voltage swing from 0V with the foundation of positive voltage, in blink after the switch of power supply closes, triode ends, the first capacitor charging subsequently, the base potential of triode constantly rises, after triode conducting, the collector potential of triode promptly drops to again 0V, the collector output waveform of triode is through the 3rd electric capacity and the 4th resistance differential, by diode every going positive spike pulse, the negative spike pulse obtaining goes to trigger monostable circuit, such a workflow has been simplified the structure of circuit significantly, strengthened the stability of circuit.
Accompanying drawing explanation
Fig. 1 is that the utility model is for the circuit diagram of the start-up circuit of industrial motor control device.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model is for the start-up circuit of industrial motor control device, comprise triode VT, diode VD, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4, positive polarity input end is connected with the first end of the 3rd resistance R 3 with the first end of the first resistance R 1 respectively, the second end of the 3rd resistance R 3 is connected with the first end of the 3rd capacitor C 3 with the collector of triode VT respectively, the second end of the 3rd capacitor C 3 is connected with the first end of the 4th resistance R 4 with the negative pole of diode VD respectively, the just very signal input part of diode VD, ground connection after the second end of the 4th resistance R 4 is connected with the emitter of triode VT and the first end of the second capacitor C 2 respectively, the base stage of triode VT respectively with the first end of the second capacitor C 2, the first end of the second resistance R 2, the second end of the first resistance R 1 is connected with the first end of the first capacitor C 1, the second end of the first capacitor C 1 is connected with the second end of the second resistance R 2, the second end of the second resistance R 2 is voltage negative input.
The utility model is as follows for the principle of work of the start-up circuit of industrial motor control device:
After power connection, the collector potential of triode VT first promptly rises to certain voltage swing from 0V with the foundation of positive voltage, in blink after the switch of power supply closes, triode VT ends, the first capacitor C 1 charging subsequently, the base potential of triode VT constantly rises, after triode VT conducting, the collector potential of triode VT promptly drops to again 0V, the collector output waveform of triode VT is through the 3rd capacitor C 3 and the 4th resistance R 4 differential, by diode VD, every going positive spike pulse, the negative spike pulse obtaining goes to trigger monostable circuit.
Because the resistance of the first resistance R 1 is larger, the capacity of the first capacitor C 1 is larger, so that the charging in the charge ratio of the first capacitor C 1 monostable circuit to be triggered is wanted is much slow, so start a negative spike pulse for level output, after monostable circuit charging, just occurs.
Claims (1)
1. the start-up circuit for industrial motor control device, it is characterized in that: comprise triode, diode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first resistance, the second resistance, the 3rd resistance and the 4th resistance, positive polarity input end is connected with the first end of described the 3rd resistance with the first end of described the first resistance respectively, the second end of described the 3rd resistance is connected with the first end of described the 3rd electric capacity with the collector of described triode respectively, the second end of described the 3rd electric capacity is connected with the first end of described the 4th resistance with the negative pole of described diode respectively, the just very signal input part of described diode, ground connection after the second end of described the 4th resistance is connected with the emitter of described triode and the first end of described the second electric capacity respectively, the base stage of described triode respectively with the first end of described the second electric capacity, the first end of described the second resistance, the second end of described the first resistance is connected with the first end of described the first electric capacity, the second end of described the first electric capacity is connected with the second end of described the second resistance, the second end of described the second resistance is voltage negative input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444880.2U CN203397129U (en) | 2013-07-23 | 2013-07-23 | Starting circuit for industrial motor control devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444880.2U CN203397129U (en) | 2013-07-23 | 2013-07-23 | Starting circuit for industrial motor control devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203397129U true CN203397129U (en) | 2014-01-15 |
Family
ID=49908651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320444880.2U Expired - Fee Related CN203397129U (en) | 2013-07-23 | 2013-07-23 | Starting circuit for industrial motor control devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203397129U (en) |
-
2013
- 2013-07-23 CN CN201320444880.2U patent/CN203397129U/en not_active Expired - Fee Related
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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: 20140115 Termination date: 20140723 |
|
| EXPY | Termination of patent right or utility model |