CN208890692U - A kind of speed-adjusting circuit of alternating - Google Patents
A kind of speed-adjusting circuit of alternating Download PDFInfo
- Publication number
- CN208890692U CN208890692U CN201821096254.8U CN201821096254U CN208890692U CN 208890692 U CN208890692 U CN 208890692U CN 201821096254 U CN201821096254 U CN 201821096254U CN 208890692 U CN208890692 U CN 208890692U
- Authority
- CN
- China
- Prior art keywords
- point
- connect
- circuit
- relay
- triode thyristor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
A kind of speed-adjusting circuit of alternating.Using two step-down capacitors of silicon-controlled switching of a relay and one, realizes three kinds of rotational speed regulations of alternating current generator, saved circuit cost, reduced circuit size, improved alignment circuit stability.
Description
Technical field
The utility model relates to a kind of speed-adjusting circuit of alternating, are used for single-phase alternating current more specifically to one kind
Three velocity modulation of machine economize on electricity road.
Background technique
It is current three velocity modulation section circuit structure diagram of load motor, including three relays 1,2,3 and as shown in Figure 1
One step-down capacitor C1, the second step-down capacitor C2, MCU control unit and its supply voltage VCC and common ground GND.Three velocity modulation
Section circuit operation principle is: control three relays respectively by three GPIO pins of MCU control unit and be attracted, when after
After electric appliance 3 is attracted, it is at this time fast state that alternating current firewire, which is directly over the relay normally open contact to motor firewire,；Work as relay
After device 1 and relay 2 are attracted simultaneously, alternating current firewire is after the two relay normally open contacts using respective step-down capacitor
It is connected together after C1 and C2 and is output to motor firewire, be at this time middling speed state；When the only actuation of relay 1, city's electrical fire
Line is connected to the first step-down capacitor C1 by the relay normally open contact, and the first step-down capacitor C1 other end is output to motor fire
Line is at this time lower-speed state；
Existing three velocity modulation of load motor economize on electricity road has the following problems:
1, three kinds of speed adjustment circuit higher costs are realized using three relays；
2, circuit size is larger, is not suitable for the electronic product of some site requirements small sizes；
3, the service life of relay is reduced as its on-off number increases, and long-play influences the stability of product.
Summary of the invention
In order to overcome, the higher cost on existing three velocity modulation of load motor economize on electricity road, circuit size is larger and keeps away
Exempt from that the stability of circuit is caused to reduce using multiple relays.
The technical scheme adopted by the utility model to solve the technical problem is as follows: construction includes existing load motor
The MCU control unit and its supply voltage VCC and common ground GND on three velocity modulations economize on electricity road, the first step-down capacitor C1, the second decompression
Capacitor C2, as shown in Fig. 2, after being in addition connected by the MT1 foot of a bidirectional triode thyristor 4 with one end of the first step-down capacitor C1 again with
The A point of alternating current is connected；The other end of first step-down capacitor C1 is connected with the normally opened contact B point of relay 6；Bidirectional triode thyristor 4
After MT2 foot is connected with one end of the second step-down capacitor C2 and the normally-closed contact of relay 6 is connected to C point；Second step-down capacitor C2
The other end be connected with the contact common end D point of relay 6 after output to motor；It is controlled by trigger control circuit 5 two-way controllable
The conducting and shutdown of silicon 4；
There are two types of implementation methods for trigger control circuit 5, and first is: including a photoelectrical coupler 42, photoelectrical coupler
One output end of 42 inside bilateral diode is connect with the control electrode G of bidirectional triode thyristor 4, and the inside of photoelectrical coupler 42 is double
It is connect to another output end of diode with first resistor 41, the other end of first resistor 41 is connect with C point, photoelectric coupling
The internal diode anode of device 42 is connect with VCC, cathode and second resistance 43 connect, and the other end and F point of second resistance 43 connect
It connects；
Another method of trigger control circuit 5 is: the MT1 foot of bidirectional triode thyristor 4 is connect with A point and VCC, it is two-way can
The control electrode G of control silicon 4 is connect with one end of 3rd resistor 54, and the other end of 3rd resistor 54 and the F point of MCU control unit connect
It connects；
MCU control unit need to only provide two GPIO mouthfuls of F and E and control the trigger control circuit 5 and relay respectively
Control circuit 7；
Control relay circuit 7 uses the collector connecting relay coil of a NPN triode, transistor emitter and public affairs
Ground connection GND is connected altogether, and transistor base is connected by the 4th resistance 62 with the E of MCU control unit point；Pass through MCU control unit
GPIO mouth E point issue high level, relay is connected, otherwise cut-off；
Three velocity modulation section circuit operation principle of this load motor is: double when the F of MCU control unit point is low level
To silicon-controlled 4 conducting, alternating current firewire reaches the C point of relay 6 after the bidirectional triode thyristor 4, using the normal of the relay 6
It after closed contact to common end D point, directly powers to motor, the first step-down capacitor C1 is in open circuit, the second step-down capacitor C2 at this time
In bypass, two step-down capacitors are not worked, and motor works in fast state；
Under above-mentioned fast state, the E point of MCU control unit is high level, and relay 6 is attracted, C, D of relay 6
Two o'clock it is separated, connected between B, D two o'clock, alternating current reaches motor by two-way, and the first via is alternating current firewire by silicon-controlled 4
Motor is reached after the second step-down capacitor C2 again after reaching C point afterwards, is in addition alternating current firewire all the way by the first step-down capacitor C1
Motor is reached again after relay normally open contact reaches D point after arriving B point afterwards, at this time two step-down capacitor parallel operations, motor
Work is in middling speed state；
Under above-mentioned middling speed state, when the F point of MCU control unit is high level, silicon-controlled 4 are disconnected, and alternating current firewire only passes through
It crosses to motor is reached again after relay normally open contact reaches D point after B point after the first step-down capacitor C1, at this time the only first drop
Voltage capacitance C1 work, the second step-down capacitor C2 are in open circuit, and motor works in lower-speed state；
1, the beneficial effects of the utility model are: three relays of three velocity modulation of load motor economize on electricity routing originally change
Become a relay and a bidirectional triode thyristor, circuit cost reduces, and circuit size reduces, and the stability of circuit improves.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is existing three velocity modulation section circuit structure diagram of load motor；
Fig. 2 is the circuit structure diagram of the embodiment 1 on three velocity modulation of the utility model load motor economize on electricity road, embodiment 2；
Fig. 3 is the circuit of the trigger control circuit 5 of three velocity modulation section circuit embodiments 1 of the utility model load motor
Figure；
Fig. 4 is the circuit of the trigger control circuit 5 of three velocity modulation section circuit embodiments 2 of the utility model load motor
Figure；
Fig. 5 is the relay control electricity of three velocity modulation section circuit embodiments 1 of the utility model load motor, embodiment 2
The circuit diagram on road 7；
Specific embodiment
Embodiment 1:
Fig. 2 is the circuit structure diagram of the embodiment 1 on three velocity modulation of the utility model load motor economize on electricity road, and Fig. 3 is this
The circuit diagram of the trigger control circuit 5 of three velocity modulation section circuit embodiments 1 of utility model load motor.As shown in Fig. 2, including
The MCU control unit and its supply voltage VCC and common ground of the adjusting circuit of three kinds of speed of existing load motor
GND, the first step-down capacitor C1, the second step-down capacitor C2；
In Fig. 3: MT1, MT2 foot of a bidirectional triode thyristor 4 are connect with A, C point respectively；One photoelectrical coupler 42
One output end of internal bilateral diode is connect with the control electrode G of bidirectional triode thyristor 4, the inside of photoelectrical coupler 42 two-way two
Another output end of pole pipe is connect with first resistor 41, and the other end of first resistor 41 is connect with C point, photoelectrical coupler 42
Internal diode anode connect with VCC, the connection of cathode and second resistance 43, the other end of second resistance 43 connect with F point；It adopts
It is the photoelectrical coupler of bilateral diode type with internal output, such as MOC3063, MOC3083 etc., F point are the low level time
Electric coupler 42 and bidirectional triode thyristor 4 are connected, and when high level turns off；43 resistance value of second resistance is according to VCC point voltage and photoelectricity coupling
Clutch driving current and forward conduction voltage are calculated, such as: optocoupler forward voltage is 1.2V, driving current 6mA, VCC
Point voltage is 5V, and the resistance value of second resistance 43 is (5-1.2)/6 kilo-ohm.
Embodiment 2:
Fig. 2 is the circuit structure diagram of the embodiment 2 on three velocity modulation of the utility model load motor economize on electricity road, and Fig. 3 is this
The circuit diagram of the trigger control circuit 5 of three velocity modulation section circuit embodiments 1 of utility model load motor.As shown in Fig. 2, including
The MCU control unit and its supply voltage VCC and common ground of the adjusting circuit of three kinds of speed of existing load motor
GND, the first step-down capacitor C1, the second step-down capacitor C2；
In Fig. 4: the MT1 foot of bidirectional triode thyristor 4 is connect with A point and VCC；By the MT1 foot of bidirectional triode thyristor 4 and A point and
The control electrode G of VCC connection, bidirectional triode thyristor 4 is connect with one end of 3rd resistor 54, and the other end and MCU of 3rd resistor 54 are controlled
The F point of unit processed connects；The resistance value of 3rd resistor 54 is carried out according to VCC voltage and bidirectional triode thyristor triggering pressure drop and trigger current
It calculates, such as: control machines pressure drop 0.65V, driving current 10mA, VCC point voltage are 5V, and 54 resistance value of 3rd resistor is
(5-0.65)/10 kilo-ohm.
Fig. 5 is the relay control electricity of three velocity modulation section circuit embodiments 1 of the utility model load motor, embodiment 2
The circuit diagram on road 7, in Fig. 5: one end of the coil of relay 6 is connected with VCC, the collection of other end and a PNP triode 61
Electrode is connected；61 emitter of triode is connected with common ground GND, base stage is connected with the 4th resistance 62, the 4th resistance 62 it is another
Outer one end is connected with the E of MCU control unit point, the base current that 62 resistance value of the 4th resistance need to be provided according to triode saturation conduction
Ib is determining, such as: VCC point voltage is 5V, and the resistance value of the 4th resistance 62 is (5-0.7)/Ib.
Claims (3)
1. a kind of speed-adjusting circuit of alternating, it is characterised in that: the MT1 foot of bidirectional triode thyristor (4) and the first step-down capacitor C1's
One end is connected with the A of alternating current point again after being connected；The normally opened contact B point phase of the other end of first step-down capacitor C1 and relay (6)
Even；The MT2 foot of bidirectional triode thyristor (4) is connect after being connected with one end of the second step-down capacitor C2 with the normally-closed contact of relay (6)
In C point；The other end of second step-down capacitor C2 exports after being connected with the contact common end D point of relay (6) to motor；By triggering
Control circuit (5) controls the conducting and shutdown of bidirectional triode thyristor (4).
2. speed-adjusting circuit of alternating according to claim 1, it is characterised in that: trigger control circuit (5) includes one
Photoelectrical coupler (42), an output end of the inside bilateral diode of photoelectrical coupler (42) and the control of bidirectional triode thyristor (4)
Another output end of G connection in pole processed, the inside bilateral diode of photoelectrical coupler (42) is connect with first resistor (41), the
The other end of one resistance (41) is connect with C point, and the internal diode anode of photoelectrical coupler (42) connect with VCC, cathode and
Two resistance (43) connection, the other end of second resistance (43) are connect with F point.
3. speed-adjusting circuit of alternating according to claim 1, it is characterised in that: the MT1 foot and A of bidirectional triode thyristor (4)
Point connected with VCC, the control electrode G of bidirectional triode thyristor (4) is connect with one end of 3rd resistor (54), 3rd resistor (54) it is another
End is connect with the F of MCU control unit point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821096254.8U CN208890692U (en) | 2018-07-11 | 2018-07-11 | A kind of speed-adjusting circuit of alternating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821096254.8U CN208890692U (en) | 2018-07-11 | 2018-07-11 | A kind of speed-adjusting circuit of alternating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208890692U true CN208890692U (en) | 2019-05-21 |
Family
ID=66506514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821096254.8U Expired - Fee Related CN208890692U (en) | 2018-07-11 | 2018-07-11 | A kind of speed-adjusting circuit of alternating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208890692U (en) |
-
2018
- 2018-07-11 CN CN201821096254.8U patent/CN208890692U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107069655B (en) | Voltage protection circuit | |
| CN207117156U (en) | A kind of voltage protection circuit | |
| CN104767505A (en) | Switching circuit with circuit protection function | |
| CN204167203U (en) | A kind of relay contact protection circuit | |
| CN208890692U (en) | A kind of speed-adjusting circuit of alternating | |
| CN101895216B (en) | State switching circuit of wide-voltage switch | |
| CN205016421U (en) | Relay switch drive arrangement and domestic appliance | |
| CN201860094U (en) | Short circuit protection circuit for switch power | |
| CN205353651U (en) | Soybean milk machine control circuit | |
| CN104465221A (en) | Relay control circuit | |
| CN103475191A (en) | Control circuit of switching power supply | |
| CN106847581A (en) | Electronic arc eliminating feedback device and arc-control device | |
| CN103956946B (en) | A kind of low-pressure high-power DC motor control circuit of band overcurrent protection | |
| CN105929744A (en) | Power on/off circuit and household electrical appliance | |
| CN208672722U (en) | A kind of DC load fault condition detection circuit | |
| CN209282925U (en) | A kind of driving circuit for automatic transfer switching electric appliance controller | |
| CN209267544U (en) | The driving of IGBT a kind of and protection circuit | |
| CN107204651A (en) | The energy-saving circuit and method of work, charger of rear power themselves down are full of in charger | |
| CN203813714U (en) | Motor driving device and frequency-conversion household electrical appliance | |
| CN208675582U (en) | A kind of Novel blood pressure-reducing type LED power circuit | |
| CN201717796U (en) | Wide voltage switch state converting circuit | |
| CN205583660U (en) | Output current foldback circuit of converter | |
| CN106683946B (en) | A kind of direct insertion electronic type intermediate relay | |
| CN206147061U (en) | Speed governing voltage switching circuit and electric source plate | |
| CN201782611U (en) | Safe soymilk machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 Termination date: 20200711 |