CN206077271U - A kind of machine governor with excess current protective function - Google Patents
A kind of machine governor with excess current protective function Download PDFInfo
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- CN206077271U CN206077271U CN201621060591.2U CN201621060591U CN206077271U CN 206077271 U CN206077271 U CN 206077271U CN 201621060591 U CN201621060591 U CN 201621060591U CN 206077271 U CN206077271 U CN 206077271U
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Abstract
This utility model discloses a kind of machine governor with excess current protective function; including square-wave generator, ON-OFF control circuit and current foldback circuit; the square-wave generator includes chip IC 1, potentiometer RP1, resistance R1, resistance R3 and electric capacity C1; ON-OFF control circuit includes resistance R4 and metal-oxide-semiconductor Q1, and current foldback circuit includes resistance R6, diode D2, audion V1 and bidirectional thyristor Q2.Machine governor of this utility model with excess current protective function carries out on-off control to metal-oxide-semiconductor using timer chip composition square-wave generator; therefore regulator potentiometer is with regard to the angle of flow of energy regulation motor; reach the purpose of regulation motor rotating speed; overcurrent protection module is increased in circuit also simultaneously; it is prevented from overcurrent to cause to switch burning for metal-oxide-semiconductor, increases the service life.
Description
Technical field
This utility model is related to a kind of machine governor, specifically a kind of electric machine speed regulation with excess current protective function
Device.
Background technology
Direct current generator is referred to and direct current energy can be converted into mechanical energy（Dc motor）Or convert mechanical energy into direct current
Electric energy（DC generator）Electric rotating machine.It is the motor that can realize direct current energy and the mutual phase transformation of mechanical energy.When it makees electricity
Motivation is dc motor when running, and converts electrical energy into mechanical energy；It is DC generator to make during generator operation, by mechanical energy
Electric energy is converted to, due to its stabilization of speed, easy to control, therefore is widely used in the field of being precisely controlled.
To adopting agitator or square-wave generator to combine switch element come real the control of direct current generator in prior art more
It is existing, although easy to adjust, but easily have a problem that, exactly it is easy to make three poles when occurring overcurrent situations in circuit
The switch elements such as pipe, metal-oxide-semiconductor burn, and have a strong impact on its service life, for example, disclose/notification number：One kind of CN205039728U
DC motor speed-regulating circuit, there is above-mentioned problem, needs to be improved.
Utility model content
The purpose of this utility model is to provide a kind of simple structure, the electricity with excess current protective function easy to use
Machine speed regulator, to solve the problems, such as to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme：
A kind of machine governor with excess current protective function, including square-wave generator, ON-OFF control circuit and excessively stream
Protection circuit, the square-wave generator include chip IC 1, potentiometer RP1, resistance R1, resistance R3 and electric capacity C1, on-off control electricity
Road includes resistance R4 and metal-oxide-semiconductor Q1, and current foldback circuit includes resistance R6, diode D2, audion V1 and bidirectional thyristor Q2；
One end of the resistance R1 connects electric capacity C3, resistance R3, the pin 4 of chip IC 1, the pin 8 of chip IC 1 and power supply
The other end of U1, resistance R1 connects a fixing end of potentiometer RP1, and the sliding end of potentiometer RP1 connects the sun of diode D1
The pin 7 of pole and chip IC 1, another fixing end of potentiometer RP1 connect resistance R3, the other end connection electric capacity of resistance R3
The pin 6 of C1, the negative electrode of diode D1, the pin 2 of chip IC 1 and chip IC 1, the other end connection electric capacity C2 of electric capacity C1, electricity
Hold the other end, electric capacity C4, resistance R6, resistance R7, the pin 1 of chip IC 1 and the ground of C3, the connection resistance of pin 3 of chip IC 1
The grid of the other end connection mode Q1 of R4, resistance R4, the drain electrode connection anode of diode D3 of metal-oxide-semiconductor Q1, motor M and two-way
One main electrode of IGCT Q2, the source electrode of metal-oxide-semiconductor Q1 connect the other end, the anode of diode D2 and the two-way brilliant lock of resistance R6
Another main electrode of pipe Q2, the other end of negative electrode connection electric capacity C4 and the other end of resistance R5, resistance R5 of diode D2 connect
The base stage of audion V1 is connect, the other end and the control pole of bidirectional thyristor Q1 of the emitter stage connection resistance R7 of audion V are described
Model NE555 of chip IC 1.
As preferred version of the present utility model：Model IN4001 of the diode D1.
As preferred version of the present utility model：The model 9013 of the audion V1, the model of metal-oxide-semiconductor Q1
TM45N20。
As preferred version of the present utility model：Model KP20-8 of the bidirectional thyristor Q2.
Compared with prior art, the beneficial effects of the utility model are：This utility model carries excess current protective function
Machine governor carries out on-off control, therefore regulator potentiometer with regard to energy using timer chip composition square-wave generator to metal-oxide-semiconductor
The angle of flow of regulation motor, reaches the purpose of regulation motor rotating speed, while also increased overcurrent protection module, energy in circuit
Enough prevent overcurrent from causing to switch burning for metal-oxide-semiconductor, increase the service life.
Description of the drawings
Fig. 1 is the circuit diagram of the machine governor with excess current protective function.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Refer to Fig. 1, a kind of machine governor with excess current protective function, including square-wave generator, on-off control
Circuit and current foldback circuit, the square-wave generator include chip IC 1, potentiometer RP1, resistance R1, resistance R3 and electric capacity C1,
ON-OFF control circuit includes resistance R4 and metal-oxide-semiconductor Q1, and current foldback circuit includes resistance R6, diode D2, audion V1 and double
To IGCT Q2；
One end of the resistance R1 connects electric capacity C3, resistance R3, the pin 4 of chip IC 1, the pin 8 of chip IC 1 and power supply
The other end of U1, resistance R1 connects a fixing end of potentiometer RP1, and the sliding end of potentiometer RP1 connects the sun of diode D1
The pin 7 of pole and chip IC 1, another fixing end of potentiometer RP1 connect resistance R3, the other end connection electric capacity of resistance R3
The pin 6 of C1, the negative electrode of diode D1, the pin 2 of chip IC 1 and chip IC 1, the other end connection electric capacity C2 of electric capacity C1, electricity
Hold the other end, electric capacity C4, resistance R6, resistance R7, the pin 1 of chip IC 1 and the ground of C3, the connection resistance of pin 3 of chip IC 1
The grid of the other end connection mode Q1 of R4, resistance R4, the drain electrode connection anode of diode D3 of metal-oxide-semiconductor Q1, motor M and two-way
One main electrode of IGCT Q2, the source electrode of metal-oxide-semiconductor Q1 connect the other end, the anode of diode D2 and the two-way brilliant lock of resistance R6
Another main electrode of pipe Q2, the other end of negative electrode connection electric capacity C4 and the other end of resistance R5, resistance R5 of diode D2 connect
Connect the base stage of audion V1, the other end and the control pole of bidirectional thyristor Q1 of the emitter stage connection resistance R7 of audion V.
Model NE555 of chip IC 1.Model IN4001 of diode D1.The model 9013, MOS of audion V1
Model TM45N20 of pipe Q1.Model KP20-8 of bidirectional thyristor Q2.
Operation principle of the present utility model is：Regulating element of the potentiometer in circuit as square-wave generator, changes electricity
The resistance of position device RP1, you can change the dutycycle of the output square wave of square-wave generator, and then the grid voltage of change metal-oxide-semiconductor Q1,
The result for adjusting metal-oxide-semiconductor Q1 break-makes is reached, the on-off valve regulation of metal-oxide-semiconductor Q1 is exactly the rotational speed regulation of motor M, therefore only need to adjust
Potentiometer RP1 is just capable of the rotating speed of regulation motor M, and the resistance R6 in circuit is overcurrent sample resistance, when electromotor overload,
According to Ohm's law V=I*R, therefore the pressure drop on resistance R6 increases, and then so that in the base potential of audion V1
Rise, when the base potential of V1 is higher than 0.7V, V1 conductings, voltage trigger bidirectional thyristor Q2 after audion V1, and Q2's leads
Reduction of fractions to a common denominator stream fractional load, so as to protecting power tube Q1, effective extended period service life.
Claims (4)
1. a kind of machine governor with excess current protective function, including square-wave generator, ON-OFF control circuit and excessively stream are protected
Protection circuit, it is characterised in that the square-wave generator includes chip IC 1, potentiometer RP1, resistance R1, resistance R3 and electric capacity C1,
ON-OFF control circuit includes resistance R4 and metal-oxide-semiconductor Q1, and current foldback circuit includes resistance R6, diode D2, audion V1 and double
To IGCT Q2；
One end of the resistance R1 connects electric capacity C3, resistance R3, the pin 4 of chip IC 1, the pin 8 of chip IC 1 and power supply U1,
The other end of resistance R1 connects a fixing end of potentiometer RP1, the anode of the sliding end connection diode D1 of potentiometer RP1 and
The pin 7 of chip IC 1, another fixing end of potentiometer RP1 connect resistance R3, the other end connection electric capacity C1 of resistance R3, two
The pin 6 of the negative electrode of pole pipe D1, the pin 2 of chip IC 1 and chip IC 1, the other end connection electric capacity C2 of electric capacity C1, electric capacity C3
The other end, electric capacity C4, resistance R6, resistance R7, the pin 1 of chip IC 1 and ground, the connection resistance R4 of pin 3 of chip IC 1, resistance
The grid of the other end connection mode Q1 of R4, the drain electrode of metal-oxide-semiconductor Q1 connect anode, motor M and the bidirectional thyristor of diode D3
One main electrode of Q2, the source electrode of metal-oxide-semiconductor Q1 connect the other end, the anode of diode D2 and the bidirectional thyristor Q2 of resistance R6
Another main electrode, the other end of negative electrode connection electric capacity C4 and the other end of resistance R5, resistance R5 of diode D2 connect three poles
The base stage of pipe V1, the other end and the control pole of bidirectional thyristor Q1 of the emitter stage connection resistance R7 of audion V, the chip
Model NE555 of IC1.
2. a kind of machine governor with excess current protective function according to claim 1, it is characterised in that described two
Model IN4001 of pole pipe D1.
3. a kind of machine governor with excess current protective function according to claim 1, it is characterised in that described three
The model 9013 of pole pipe V1, model TM45N20 of metal-oxide-semiconductor Q1.
4. a kind of machine governor with excess current protective function according to claim 1, it is characterised in that described double
To model KP20-8 of IGCT Q2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621060591.2U CN206077271U (en) | 2016-09-19 | 2016-09-19 | A kind of machine governor with excess current protective function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621060591.2U CN206077271U (en) | 2016-09-19 | 2016-09-19 | A kind of machine governor with excess current protective function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206077271U true CN206077271U (en) | 2017-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621060591.2U Expired - Fee Related CN206077271U (en) | 2016-09-19 | 2016-09-19 | A kind of machine governor with excess current protective function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206077271U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376395A (en) * | 2017-08-28 | 2017-11-24 | 华南理工大学云浮研究院 | A kind of long-life chemical industry reflects crystallization kettle |
| US10547257B2 (en) | 2017-05-05 | 2020-01-28 | Defond Electech Co., Ltd. | Variable-speed controller for use with an electric device |
-
2016
- 2016-09-19 CN CN201621060591.2U patent/CN206077271U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10547257B2 (en) | 2017-05-05 | 2020-01-28 | Defond Electech Co., Ltd. | Variable-speed controller for use with an electric device |
| CN107376395A (en) * | 2017-08-28 | 2017-11-24 | 华南理工大学云浮研究院 | A kind of long-life chemical industry reflects crystallization kettle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20170919 |
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| CF01 | Termination of patent right due to non-payment of annual fee |