CN203399075U - No-chip type soft-starting device employing field effect transistor for large-power industrial equipment - Google Patents
No-chip type soft-starting device employing field effect transistor for large-power industrial equipment Download PDFInfo
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- CN203399075U CN203399075U CN201320437708.4U CN201320437708U CN203399075U CN 203399075 U CN203399075 U CN 203399075U CN 201320437708 U CN201320437708 U CN 201320437708U CN 203399075 U CN203399075 U CN 203399075U
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- effect transistor
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Abstract
The utility model discloses a no-chip type soft-starting device employing a field effect transistor for large-power industrial equipment. The device comprises a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a second capacitor, the field effect transistor, a transformer, a bidirectional silicon controlled rectifier, a voltage regulator tube, and a switch. The device provided by the utility model mainly employs the third resistor and the second capacitor to form a time-relay circuit. In use, the charging process of the second capacitor enables the phase shift of the bidirectional silicon controlled rectifier, enables the circuit to move forward gradually, enables the conduction angle of the bidirectional silicon controlled rectifier to increase gradually, and enables an electrical appliance to be started gradually. According to the utility model, the field effect transistor serves as a core element, and the connection of the field effect transistor, along with a small number of peripheral electronic elements, forms the soft-starting device for the large-power industrial equipment. Compared with the prior art, the device provide by the utility model is simple in circuit structure, employs fewer elements, is small in size, is light in weight, is low in cost, is convenient to install, and is in favor of popularization.
Description
Technical field
The utility model relates to a kind of high-power industrial equipment servicing unit, relate in particular to a kind of adopt field effect transistor exempt from the high-power industrial equipment relaxed starter of chip type.
Background technology
Relaxed starter is to adopt power electronic technology, microprocessing and modern control theory and design the Novel starting equipment with current international most advanced level of production.This product is starting current during limiting AC asynchronous motor starting effectively, blower fan, water pump, conveying class and the compressor even load that can be widely used in industrial equipment are the desirable regeneration products of the decompression devices such as traditional star/triangle conversion, self-coupling voltage reducing, magnetic control step-down.
Powerful industrial equipment is when operation, in order to prevent the damage of equipment and the useful life of improving equipment, adopt voltage slowly to rise to rated voltage by zero, make the overall process of device start not have impact torque, but the mode of level and smooth startup operation, Here it is relaxed starter, and relaxed starter complex structure of the prior art, the electronic component of employing is more, and cost is higher, volume is large, is unfavorable for promoting.
Utility model content
The purpose of this utility model with regard to be to provide in order to address the above problem a kind of adopt field effect transistor exempt from the high-power industrial equipment relaxed starter of chip type.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises the first diode to the five diodes, the first resistance to the seven resistance, the first electric capacity, the second electric capacity, field effect transistor, transformer, bidirectional triode thyristor, voltage-stabiliser tube and switch, one end of AC power is connected with the first end of electrical appliance, the other end while of described AC power and the first end of described bidirectional triode thyristor, described the 7th first end of resistance and the first end of described primary are connected, the second end of described bidirectional triode thyristor is connected with the second end of described electrical appliance, the control end of described bidirectional triode thyristor is connected with the positive pole of described the 5th diode with the second end of described the 7th resistance simultaneously, the negative pole of described the 5th diode is connected with the second end of described primary, the first end while of described transformer secondary output and the first end of described the first electric capacity, the first end of described the second electric capacity, the first end of described the second resistance, the positive pole of described voltage-stabiliser tube, the positive pole of described the 4th diode is connected with the positive pole of described the 3rd diode, the second end of described transformer secondary output is connected with the source electrode of described field effect transistor, the drain electrode of described field effect transistor is connected with the first end of described the 6th resistance, the grid of described field effect transistor is connected with the first end of described the 5th resistance and the second end of described the first electric capacity simultaneously, the second end while of described the 6th resistance and the positive pole of described the 6th diode, the negative pole of described voltage-stabiliser tube is connected with the first end of described the first resistance, the second end of described the 5th resistance is connected with the first end of described the 4th resistance, the second end of described the 4th resistance is connected with the first end of described the 3rd resistance with the second end of described the second electric capacity simultaneously, the second end of described the 3rd resistance is connected with the negative pole of described the 6th diode with the second end of described the second resistance simultaneously, the second end of described the first resistance is connected with the negative pole of described the first diode with the negative pole of described the second diode simultaneously, the anodal of described the second diode is connected with described the 4th negative pole of diode and the first end of described switch simultaneously, the second end of described switch is connected with the negative pole of described the 3rd diode with the positive pole of described the first diode simultaneously.
The beneficial effects of the utility model are:
It is core parts that the utility model adopts field effect transistor, add a few peripheral electronic component and connect the relaxed starter that can be configured for high-power industrial equipment, the utility model with respect to prior art have advantages of that circuit structure is simple, adopt that element is few, volume is little, lightweight, with low cost and be convenient to install, be conducive to promote.
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 utility model comprises the first diode D1 to the five diode D5, the first resistance R 1 is to the 7th resistance R 7, the first capacitor C 1, the second capacitor C 2, field effect transistor VS, transformer T, bidirectional triode thyristor SCR, voltage-stabiliser tube DW and K switch, one end of AC power is connected with the first end of electrical appliance RF, the other end while of AC power and the first end of bidirectional triode thyristor SCR, the first end of the 7th resistance R 7 is connected with the elementary first end of transformer T, the second end of bidirectional triode thyristor SCR is connected with the second end of electrical appliance RF, the control end of bidirectional triode thyristor SCR is connected with the positive pole of the 5th diode D5 with the second end of the 7th resistance R 7 simultaneously, the negative pole of the 5th diode D5 second end elementary with transformer T is connected, the first end while of T level of transformer and the first end of the first capacitor C 1, the first end of the second capacitor C 2, the first end of the second resistance R 2, the positive pole of voltage-stabiliser tube DW, the positive pole of the 4th diode D4 is connected with the positive pole of the 3rd diode D3, the second end of T level of transformer is connected with the source electrode of field effect transistor VS, the drain electrode of field effect transistor VS is connected with the first end of the 6th resistance R 6, the grid of field effect transistor VS is connected with the second end of the first capacitor C 1 with the first end of the 5th resistance R 5 simultaneously, the second end while of the 6th resistance R 6 and the positive pole of the 6th diode D6, the negative pole of voltage-stabiliser tube DW is connected with the first end of the first resistance R 1, the second end of the 5th resistance R 5 is connected with the first end of the 4th resistance R 4, the second end of the 4th resistance R 4 is connected with the first end of the 3rd resistance R 3 with the second end of the second capacitor C 2 simultaneously, the second end of the 3rd resistance R 3 is connected with the negative pole of the 6th diode D6 with the second end of the second resistance R 2 simultaneously, the second end of the first resistance R 1 is connected with the negative pole of the first diode D1 with the negative pole of the second diode D2 simultaneously, the anodal of the second diode D2 is connected with the 4th negative pole of diode D4 and the first end of K switch simultaneously, the second end of K switch is connected with the negative pole of the 3rd diode D3 with the positive pole of the first diode D1 simultaneously.
As shown in Figure 1: the utility model mainly adopts the 3rd resistance R 3 and the second capacitor C 2 to form delay circuit, during use, due to the charging process of the second capacitor C 2, make bidirectional field-effect pipe VS phase shift, circuit moves forward gradually, the angle of flow of bidirectional triode thyristor SCR slowly increases, and electrical appliance RF is slowly started.
Claims (1)
- One kind adopt field effect transistor exempt from the high-power industrial equipment relaxed starter of chip type, it is characterized in that: comprise the first diode to the five diodes, the first resistance to the seven resistance, the first electric capacity, the second electric capacity, field effect transistor, transformer, bidirectional triode thyristor, voltage-stabiliser tube and switch, one end of AC power is connected with the first end of electrical appliance, the other end while of described AC power and the first end of described bidirectional triode thyristor, described the 7th first end of resistance and the first end of described primary are connected, the second end of described bidirectional triode thyristor is connected with the second end of described electrical appliance, the control end of described bidirectional triode thyristor is connected with the positive pole of described the 5th diode with the second end of described the 7th resistance simultaneously, the negative pole of described the 5th diode is connected with the second end of described primary, the first end while of described transformer secondary output and the first end of described the first electric capacity, the first end of described the second electric capacity, the first end of described the second resistance, the positive pole of described voltage-stabiliser tube, the positive pole of described the 4th diode is connected with the positive pole of described the 3rd diode, the second end of described transformer secondary output is connected with the source electrode of described field effect transistor, the drain electrode of described field effect transistor is connected with the first end of described the 6th resistance, the grid of described field effect transistor is connected with the first end of described the 5th resistance and the second end of described the first electric capacity simultaneously, the second end while of described the 6th resistance and the positive pole of described the 6th diode, the negative pole of described voltage-stabiliser tube is connected with the first end of described the first resistance, the second end of described the 5th resistance is connected with the first end of described the 4th resistance, the second end of described the 4th resistance is connected with the first end of described the 3rd resistance with the second end of described the second electric capacity simultaneously, the second end of described the 3rd resistance is connected with the negative pole of described the 6th diode with the second end of described the second resistance simultaneously, the second end of described the first resistance is connected with the negative pole of described the first diode with the negative pole of described the second diode simultaneously, the anodal of described the second diode is connected with described the 4th negative pole of diode and the first end of described switch simultaneously, the second end of described switch is connected with the negative pole of described the 3rd diode with the positive pole of described the first diode simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320437708.4U CN203399075U (en) | 2013-07-19 | 2013-07-19 | No-chip type soft-starting device employing field effect transistor for large-power industrial equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320437708.4U CN203399075U (en) | 2013-07-19 | 2013-07-19 | No-chip type soft-starting device employing field effect transistor for large-power industrial equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203399075U true CN203399075U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320437708.4U Expired - Fee Related CN203399075U (en) | 2013-07-19 | 2013-07-19 | No-chip type soft-starting device employing field effect transistor for large-power industrial equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203399075U (en) |
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2013
- 2013-07-19 CN CN201320437708.4U patent/CN203399075U/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: 20140719 |
|
| EXPY | Termination of patent right or utility model |