CN216902685U - Time delay start control circuit and contactor equipment - Google Patents
Time delay start control circuit and contactor equipment Download PDFInfo
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- CN216902685U CN216902685U CN202220647688.2U CN202220647688U CN216902685U CN 216902685 U CN216902685 U CN 216902685U CN 202220647688 U CN202220647688 U CN 202220647688U CN 216902685 U CN216902685 U CN 216902685U
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Abstract
The utility model provides a delay start control circuit and contactor equipment, wherein the delay start control circuit comprises: the device comprises an alternating current and direct current universal power supply circuit, a voltage signal control circuit, a time delay control circuit and a switch circuit; the signal output end of the alternating current-direct current universal power supply circuit is connected with the input end of the voltage signal control circuit; the output end of the voltage signal control circuit is connected with the delay control circuit; the output end of the voltage signal control circuit is also connected with the control end of the switch circuit; the switch circuit is used for enabling the first pin, the second pin and the third pin to be conducted when the switch circuit is in a closed state, and the contactor equipment is in a starting state; the switching circuit is used for conducting the first pin and the third pin when the switching circuit is in an open state, and the contactor device is in a holding state. Through the arrangement of the voltage signal control circuit and the time delay control circuit, the on-off state of the automatic control switch circuit can be realized, and therefore the energy-saving starting control of the contactor equipment is realized.
Description
Technical Field
The utility model relates to the field of control circuits, in particular to a delay start control circuit and contactor equipment.
Background
The existing AC/DC universal energy-saving contactor rectifies the voltage at the input end and then enters two groups of coils with one end connected in parallel. The thick coil is a starting coil, the current is large, the thin coil is a holding coil, and the current is small. After the iron core is attracted, the normally closed switch is propped, the starting coil is disconnected, and the attraction of the iron core is kept by the keeping coil, so that the aim of saving energy is fulfilled.
The existing contactor starting control circuit realizes on-off control of a holding coil or a starting coil through a normally closed switch, when the starting coil is disconnected, an electric arc can be generated at a contact of the switch, strict requirements on materials and structures of the switch are met, the switch is installed in a complex mode, and a lead wire needs to be led from a printed board to an external series switch.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a delay start control circuit and contactor equipment, and the specific scheme is as follows:
in a first aspect, an embodiment of the present application provides a delay start control circuit, which is applied to a contactor device, and the delay start control circuit includes: the device comprises an alternating current and direct current universal power supply circuit, a voltage signal control circuit, a time delay control circuit and a switch circuit;
the signal output end of the alternating current and direct current universal power supply circuit is connected with the input end of the voltage signal control circuit;
the output end of the voltage signal control circuit is connected with the delay control circuit;
the output end of the voltage signal control circuit is also connected with the control end of the switch circuit;
the first connecting end of the switch circuit is respectively connected with the first pin and the second pin of the contactor device, and the second connecting end of the switch circuit is connected with the third pin;
the switch circuit is used for enabling the first pin, the second pin and the third pin to be conducted when the switch circuit is in a closed state, and the contactor equipment is in a starting state;
the switch circuit is used for conducting the first pin and the third pin when the switch circuit is in an open state, and the contactor device is in a holding state.
According to a specific implementation manner of the embodiment of the application, the alternating current and direct current universal power supply circuit comprises a first filter circuit and a bridge rectifier circuit, wherein the power supply is an alternating current power supply or a direct current power supply;
the first input end of the bridge rectifier circuit is used for accessing a positive phase voltage, and the second input end of the bridge rectifier circuit is used for accessing a negative phase voltage;
the first filter circuit is connected between the first input terminal and the second input terminal of the bridge rectifier circuit.
According to a specific implementation manner of the embodiment of the present application, the voltage signal control circuit includes a second filter circuit, a first voltage control circuit, and a second voltage control circuit;
the first voltage control circuit comprises a first voltage difference linear voltage stabilizer and a first capacitor, and the second voltage control circuit comprises a second voltage difference linear voltage stabilizer and a second capacitor;
the input end of the first voltage difference linear voltage stabilizer is connected with the signal output end of the alternating current-direct current universal power supply circuit, the output end of the first voltage difference linear voltage stabilizer is respectively connected with the input end of the second voltage difference linear voltage stabilizer, one end of the first capacitor and the first input end of the switch circuit, and the other end of the first capacitor is grounded;
the output end of the second voltage difference linear voltage stabilizer is respectively connected with the delay control circuit, one end of the second capacitor and the second input end of the switch circuit, and the other end of the second capacitor is grounded;
and the second filter circuit is connected between the signal output end of the alternating current-direct current universal power supply circuit and the input end of the first voltage difference linear voltage stabilizer.
According to a specific implementation manner of the embodiment of the present application, the delay control circuit includes a first resistor and a third capacitor;
one end of the first resistor is connected with the output end of the voltage signal control circuit, the other end of the first resistor is connected with one end of the third capacitor, and the other end of the third capacitor is grounded.
According to a specific implementation manner of the embodiment of the application, a triode and a MOS tube of the switch circuit;
the base electrode of the triode is connected with the output end of the second voltage control circuit, the collector electrode of the triode is connected with the output end of the first voltage control circuit, and the emitter electrode of the triode is connected with the third pin;
the grid electrode of the MOS tube is connected with the collector electrode of the triode through a resistor, the drain electrode of the MOS tube is respectively connected with the second pin and the first pin, and the source electrode of the MOS tube is connected with the third pin;
and the emitting electrode of the triode and the source electrode of the MOS tube are both grounded.
According to a specific implementation manner of the embodiment of the present application, the electrical signal output by the output terminal of the first voltage control circuit is a 12V level signal, and the electrical signal output by the output terminal of the second voltage control circuit is a 5V level signal.
According to a specific implementation manner of the embodiment of the application, the triode is an NPN type triode, and the MOS transistor is an N-channel MOSFET.
According to a specific implementation manner of the embodiment of the present application, the second pin is connected to the first pin through a diode, wherein a cathode of the diode is connected to the first pin, and an anode of the diode is connected to the second pin;
the second pin is connected to the third pin through a capacitor and a resistor.
According to a specific implementation manner of the embodiment of the application, the delay start control circuit further includes a first rectifying diode and a second rectifying diode, a cathode of the first rectifying diode is connected with the first pin, and an anode of the first rectifying diode is connected with a signal output end of the alternating current/direct current universal power supply circuit;
and the cathode of the second rectifier diode is connected with the input end of the signal control circuit, and the anode of the second rectifier diode is connected with the signal output end of the alternating current-direct current universal power supply circuit.
In a second aspect, an embodiment of the present application provides a contactor device, where the contactor device includes the delay start control circuit described in any of the foregoing first aspect and the first aspect.
The utility model provides a delay start control circuit and contactor equipment, wherein the delay start control circuit comprises: the device comprises an alternating current and direct current universal power supply circuit, a voltage signal control circuit, a time delay control circuit and a switch circuit; the signal output end of the alternating current and direct current universal power supply circuit is connected with the input end of the voltage signal control circuit; the output end of the voltage signal control circuit is connected with the delay control circuit; the output end of the voltage signal control circuit is also connected with the control end of the switch circuit; the switch circuit is used for enabling the first pin, the second pin and the third pin to be conducted when the switch circuit is in a closed state, and the contactor equipment is in a starting state; the switch circuit is used for conducting the first pin and the third pin when the switch circuit is in an open state, and the contactor device is in a holding state. Through the arrangement of the voltage signal control circuit and the time delay control circuit, the on-off state of the automatic control switch circuit can be realized, and therefore the energy-saving starting control of the contactor equipment is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic circuit structure diagram of a delay start control circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention conventionally put into use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically connected or connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present embodiment provides a delay start control circuit applied to a contactor device, and as shown in fig. 1, the delay start control circuit provided in the present embodiment includes: the device comprises an alternating current and direct current universal power supply circuit, a voltage signal control circuit, a time delay control circuit and a switch circuit;
the signal output end of the alternating current and direct current universal power supply circuit is connected with the input end of the voltage signal control circuit;
the output end of the voltage signal control circuit is connected with the delay control circuit;
the output end of the voltage signal control circuit is also connected with the control end of the switch circuit;
the first connecting end of the switch circuit is respectively connected with the first pin and the second pin of the contactor device, and the second connecting end of the switch circuit is connected with the third pin;
the switch circuit is used for enabling the first pin, the second pin and the third pin to be conducted when the switch circuit is in a closed state, and the contactor equipment is in a starting state;
the switch circuit is used for conducting the first pin and the third pin when the switch circuit is in an open state, and the contactor device is in a holding state.
In a specific embodiment, the contactor device is an electrical device which can rapidly cut off main circuits of alternating current and direct current and can be frequently connected with large current control, and is commonly used for control terminals of motors, factory equipment, electric heaters, machine tools and various electric power units.
Specifically, the alternating current-direct current universal power supply circuit is used for connecting an alternating current power supply or a direct current power supply, and the alternating current-direct current universal power supply circuit is used for carrying out preset filtering processing and rectification processing on the accessed alternating current or direct current, so that the alternating current provided by the alternating current power supply or the direct current provided by the direct current power supply is converted into a processable electric signal.
And after the electric signal is processed by the alternating current and direct current universal power supply circuit, the electric signal is transmitted to a first pin PAD3 connected with a signal end of the alternating current and direct current universal power supply circuit and an input end of a signal control circuit.
The signal control circuit performs preset adjustment processing on the voltage of the electric signals, so that the electric signals are converted into a plurality of electric signals with different sizes, and the plurality of electric signals with different sizes are transmitted to the control end of the switch unit.
The output end of the signal control circuit is also connected with the delay control circuit, so that the time of electric signals with different sizes reaching the control end of the switch unit can be controlled through the delay control circuit, and the delay control of the switch unit is realized.
The switch unit is used for controlling the on-off state of the first connecting end and the second connecting end according to electric signals of different sizes, and enabling the first pin PAD3, the second pin PAD4 and the third pin PAD5 to be connected when the first connecting end and the second connecting end are conducted, so that a starting coil and a holding coil in the contactor device are conducted, and after the starting coil is conducted, the contactor device can start control of the working state.
When the first connection end and the second connection end are cut off, the first pin PAD3 and the third pin PAD5 are connected with electricity, so that a starting coil in the contactor device is cut off, a maintaining coil is connected, a maintaining coil between the PAD3 and the PAD5 attracts a contactor iron core, and the contactor device continuously works.
It should be noted that, after the ac/dc universal power supply circuit is powered, the first pin PAD3 and the third pin PAD5 are continuously powered, and the holding coil is always in an operating state. After a time delay, the power-on state of the second pin PAD4 is automatically turned off by the switch unit, and the start coil is switched from the on state to the off state.
Specifically, the starting coil structure and the holding coil structure of the contactor device in the prior art may be referred to in the circuit connection structure of the starting coil and the holding coil, which is not described herein again.
In the present embodiment, the on-off control of the start coil is realized through three pins, i.e., the first pin PAD3, the second pin PAD4 and the third pin PAD 5.
According to a specific implementation manner of the embodiment of the application, the alternating current and direct current universal power supply circuit comprises a first filter circuit and a bridge rectifier circuit, wherein the power supply is an alternating current power supply or a direct current power supply;
the first input end of the bridge rectifier circuit is used for accessing a positive phase voltage, and the second input end of the bridge rectifier circuit is used for accessing a negative phase voltage;
the first filter circuit is connected between the first input terminal and the second input terminal of the bridge rectifier circuit.
In a specific embodiment, as shown in fig. 1, the first filter circuit includes a voltage dependent resistor RV1 and a capacitor C9 connected in parallel, and the first filter circuit is connected in parallel to the first input AC1 of the bridge rectifier circuit and the second input AC2 of the bridge rectifier circuit, and is configured to filter the unwanted frequency band electrical signal in the alternating current or the direct current received by the positive-phase voltage pin PAD1 and the negative-phase voltage pin PAD 2.
The piezoresistor RV1 can also prevent the damage effect of heavy current on the bridge rectifier circuit, and effectively protect the contactor equipment.
Specifically, the chip U1 in fig. 1 is a bridge rectifier circuit, and the specific connection structure of the bridge rectifier circuit may refer to a connection structure of any bridge rectifier circuit in the prior art, which is not described herein again.
Specifically, in the practical application process, when the ac/dc universal power supply circuit is connected to ac power, the bridge rectifier circuit is an ac bridge rectifier circuit, and when the ac/dc universal power supply circuit is connected to dc power, the bridge rectifier circuit is a dc bridge rectifier circuit.
The bridge rectifier circuit is used for processing the accessed alternating current or direct current into a stable direct current signal.
According to a specific implementation manner of the embodiment of the present application, the voltage signal control circuit includes a second filter circuit, a first voltage control circuit, and a second voltage control circuit;
the first voltage control circuit comprises a first voltage difference linear voltage stabilizer and a first capacitor, and the second voltage control circuit comprises a second voltage difference linear voltage stabilizer and a second capacitor;
the input end of the first voltage difference linear voltage stabilizer is connected with the signal output end of the alternating current-direct current universal power supply circuit, the output end of the first voltage difference linear voltage stabilizer is respectively connected with the input end of the second voltage difference linear voltage stabilizer, one end of the first capacitor and the first input end of the switch circuit, and the other end of the first capacitor is grounded;
the output end of the second voltage difference linear voltage stabilizer is respectively connected with the delay control circuit, one end of the second capacitor and the second input end of the switch circuit, and the other end of the second capacitor is grounded;
and the second filter circuit is connected between the signal output end of the alternating current-direct current universal power supply circuit and the input end of the first voltage difference linear voltage stabilizer.
In a specific embodiment, the second filtering circuit includes a capacitor C4 and a capacitor C5, wherein a capacitance value of the capacitor C4 is 10 μ F, and a capacitance value of the capacitor C5 is 330nF, and the two capacitors with one large and one small can effectively filter the electrical signals of the unwanted frequency band for the first voltage linear regulator.
It should be noted that the capacitance values of the capacitor C4 and the capacitor C5 can be adaptively replaced according to the actual application scenario, and the numerical values mentioned herein are not limited to the specific values.
The first voltage difference linear regulator U2 and the second voltage difference linear regulator U3 are low dropout regulators (LDO).
The first voltage difference linear voltage regulator U2 receives an original electrical signal sent by a signal output terminal of the ac/dc universal power supply circuit, and processes the original electrical signal into a first electrical signal having a first preset voltage value. The second voltage difference linear voltage regulator U3 receives the first electrical signal sent by the output terminal of the first voltage difference linear voltage regulator, and processes the first electrical signal into a second electrical signal having a second preset voltage value.
It should be noted that the first preset voltage value is greater than the second preset voltage value.
According to a specific implementation manner of the embodiment of the present application, the electrical signal output by the output terminal of the first voltage control circuit is a 12V level signal, and the electrical signal output by the output terminal of the second voltage control circuit is a 5V level signal.
In a specific embodiment, the first preset voltage value and the second preset voltage value may be adaptively replaced according to an actual application scenario, which is not described herein again.
Specifically, the output terminal of the first voltage difference linear regulator U2 is further grounded through a first capacitor C1, and the first capacitor C1 may filter the first electrical signal output by the first voltage difference linear regulator U2.
The output terminal of the second voltage difference linear regulator U3 is further grounded through a second capacitor C2, and the second capacitor C2 may filter a second electrical signal output by the second voltage difference linear regulator U3.
Specifically, a diode D4 is further connected between the first voltage difference linear regulator U2 and the second voltage difference linear regulator U3, wherein an anode of the diode D4 is connected to the output terminal of the first voltage difference linear regulator U2, and a cathode of the diode D4 is connected to the output terminal of the second voltage difference linear regulator U3. The diode D4 can effectively prevent current from flowing back.
According to a specific implementation manner of the embodiment of the present application, the delay control circuit includes a first resistor and a third capacitor;
one end of the first resistor is connected with the output end of the voltage signal control circuit, the other end of the first resistor is connected with one end of the third capacitor, and the other end of the third capacitor is grounded.
In a specific embodiment, the first resistor R1 and the third capacitor C3 constitute the delay control circuit, the delay control circuit is connected to the output end of the second voltage difference linear regulator U3, when the second voltage difference linear regulator U3 outputs a second electrical signal, the third capacitor C3 needs to be charged first, and when the capacitance of the third capacitor C3 meets the capacitor voltage threshold, the second voltage difference linear regulator U3 outputs the second electrical signal to the second control end of the switch unit.
According to a specific implementation manner of the embodiment of the application, a triode and a MOS tube of the switch circuit;
the base electrode of the triode is connected with the output end of the second voltage control circuit, the collector electrode of the triode is connected with the output end of the first voltage control circuit, and the emitter electrode of the triode is connected with the third pin;
the grid electrode of the MOS tube is connected with the collector electrode of the triode through a resistor, the drain electrode of the MOS tube is respectively connected with the second pin and the first pin, and the source electrode of the MOS tube is connected with the third pin;
and the emitting electrode of the triode and the source electrode of the MOS tube are both grounded.
According to a specific implementation manner of the embodiment of the application, the triode is an NPN type triode, and the MOS transistor is an N-channel MOSFET.
In a specific embodiment, the control terminal of the switch unit includes a first control terminal and a second control terminal, the first control terminal of the switch unit is the base of the transistor Q1, and the second control terminal of the switch unit is the collector of the transistor Q1.
Specifically, when the triode Q1 is turned on, the gate voltage of the MOS transistor M1 is 0, the first connection end and the second connection end of the MOS transistor M1 are cut off, and the first pin PAD3 and the third pin PAD5 are electrically connected, where the first connection end is the drain of the MOS transistor M1, and the second connection end is the source of the MOS transistor.
When the triode Q1 is turned off, the gate voltage of the MOS transistor M1 is positive, the first connection end and the second connection end of the MOS transistor M1 are connected, and the first pin PAD3 and the second pin PAD4 are connected electrically.
Specifically, the first electric signal that first voltage difference linear regulator U2 output is in the moment that alternating current-direct current universal power supply circuit sent the electric signal, output to the collecting electrode of triode and the grid of the M1 of MOS pipe, so that MOS pipe M1 switches on, first pin PAD3, second pin PAD4 and third pin PAD5 connects the electricity, the start-up coil and the holding coil of contactor equipment switch on, contactor equipment is in the start-up state.
The second electric signal that second voltage difference linear voltage regulator U3 output is in after the alternating current-direct current general power supply circuit sends the signal of telecommunication time delay default time, output extremely the base of triode, so that the triode switches on after ending a period of time, MOS pipe M1 is by the on-state conversion off state, first pin PAD3 with second pin PAD4 disconnection, the start-up coil of contactor equipment ends, contactor equipment is in the hold state.
The delay time is determined according to the capacitance and the resistance in the delay circuit, and may be adaptively selected according to the actual application process, which is not specifically limited herein.
According to a specific implementation manner of the embodiment of the present application, the second pin is connected to the first pin through a diode, wherein a cathode of the diode is connected to the first pin, and an anode of the diode is connected to the second pin;
the second pin is connected to the third pin through a capacitor and a resistor.
In a specific embodiment, the second PAD4 is connected to the first PAD3 through a diode D3, and the diode D3 can effectively prevent the electrical signal of the first PAD3 from flowing back to the second PAD4, so as to effectively protect the contactor device.
Second pin PAD4 through electric capacity C8 and series connection resistance R8 and resistance R9 with third pin PAD5 is connected, through electric capacity C8, resistance R8 and resistance R9's blocking effect, can realize the on-off control of the start coil of contactor equipment is realized only through three pin to the time delay start control circuit.
According to a specific implementation manner of the embodiment of the application, the delay start control circuit further comprises a first rectifying diode and a second rectifying diode, wherein a cathode of the first rectifying diode is connected with the first pin, and an anode of the first rectifying diode is connected with a signal output end of the alternating current-direct current universal power supply circuit;
and the cathode of the second rectifier diode is connected with the input end of the signal control circuit, and the anode of the second rectifier diode is connected with the signal output end of the alternating current-direct current universal power supply circuit.
In a specific embodiment, as shown in fig. 1, the first rectifying diode is diode D1 and the second rectifying diode is diode D2.
The first rectifying diode D1 can effectively prevent the electrical signal of the first pin PAD3 from flowing back, and can rectify the electrical signal output by the ac/dc universal power supply circuit.
The second rectifying diode D2 can effectively prevent the electrical signal at the receiving end of the signal control circuit from flowing back.
In addition, the second rectifier diode D2 is further connected to the input terminal of the signal control circuit through a resistor R2, a resistor R3, a resistor R4 and a resistor R5 which are connected in series, and the resistor R2, the resistor R3, the resistor R4 and the resistor R5 which are connected in series can carry a large-current signal output by the ac/dc universal power supply circuit.
And the cathode of the second rectifier diode is grounded through a capacitor C7, and the input end of the signal control circuit is grounded through a resistor R6, so that the high-current filtering protection effect can be further realized for the signal control circuit.
In a second aspect, an embodiment of the present application provides a contactor device, where the contactor device includes the delay start control circuit described in any one of the foregoing first aspect and the foregoing first aspect.
In summary, the utility model provides a delay start control circuit and a contactor device, which implement voltage division processing of a stable electrical signal processed by an ac/dc universal power supply circuit by setting a first voltage difference linear regulator and a second voltage difference linear regulator, so as to provide control voltages of different sizes for a switch unit, thereby implementing on-off control of the switch unit. By using a triode and an MOS tube to replace a switch component in a conventional starting control circuit, the manufacturing cost of the starting control circuit can be further saved, and more energy-saving and stable starting control is provided. Through setting up time delay control circuit, can realize the automatic on-off control of switch element to further reduce the loss of signal of telecommunication and the damage to switch assembly. In addition, as for the specific implementation of the contactor device, reference may be made to the specific implementation of the circuit embodiment described above, and details are not repeated here.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A delayed start control circuit for use with a contactor device, the delayed start control circuit comprising: the device comprises an alternating current and direct current universal power supply circuit, a voltage signal control circuit, a time delay control circuit and a switch circuit;
the signal output end of the alternating current and direct current universal power supply circuit is connected with the input end of the voltage signal control circuit;
the output end of the voltage signal control circuit is connected with the delay control circuit;
the output end of the voltage signal control circuit is also connected with the control end of the switch circuit;
the first connecting end of the switch circuit is respectively connected with the first pin and the second pin of the contactor device, and the second connecting end of the switch circuit is connected with the third pin;
the switch circuit is used for enabling the first pin, the second pin and the third pin to be conducted when the switch circuit is in a closed state, and the contactor equipment is in a starting state;
the switch circuit is used for conducting the first pin and the third pin when the switch circuit is in an open state, and the contactor device is in a holding state.
2. The delayed start control circuit according to claim 1, wherein said ac/dc universal power supply circuit comprises a first filter circuit and a bridge rectifier circuit, wherein said power supply is an ac power supply or a dc power supply;
the first input end of the bridge rectifier circuit is used for accessing a positive phase voltage, and the second input end of the bridge rectifier circuit is used for accessing a negative phase voltage;
the first filter circuit is connected between the first input terminal and the second input terminal of the bridge rectifier circuit.
3. The delay start control circuit of claim 1, wherein the voltage signal control circuit comprises a second filter circuit, a first voltage control circuit and a second voltage control circuit;
the first voltage control circuit comprises a first voltage difference linear voltage stabilizer and a first capacitor, and the second voltage control circuit comprises a second voltage difference linear voltage stabilizer and a second capacitor;
the input end of the first voltage difference linear voltage stabilizer is connected with the signal output end of the alternating current-direct current universal power supply circuit, the output end of the first voltage difference linear voltage stabilizer is respectively connected with the input end of the second voltage difference linear voltage stabilizer, one end of the first capacitor and the first input end of the switch circuit, and the other end of the first capacitor is grounded;
the output end of the second voltage difference linear voltage stabilizer is respectively connected with the delay control circuit, one end of the second capacitor and the second input end of the switch circuit, and the other end of the second capacitor is grounded;
and the second filter circuit is connected between the signal output end of the alternating current-direct current universal power supply circuit and the input end of the first voltage difference linear voltage stabilizer.
4. The delayed start control circuit of claim 3, wherein said delayed control circuit comprises a first resistor and a third capacitor;
one end of the first resistor is connected with the output end of the voltage signal control circuit, the other end of the first resistor is connected with one end of the third capacitor, and the other end of the third capacitor is grounded.
5. The delay start control circuit of claim 3, wherein a transistor and a MOS transistor of the switching circuit;
the base electrode of the triode is connected with the output end of the second voltage control circuit, the collector electrode of the triode is connected with the output end of the first voltage control circuit, and the emitter electrode of the triode is connected with the third pin;
the grid electrode of the MOS tube is connected with the collector electrode of the triode through a resistor, the drain electrode of the MOS tube is respectively connected with the second pin and the first pin, and the source electrode of the MOS tube is connected with the third pin;
and the emitting electrode of the triode and the source electrode of the MOS tube are both grounded.
6. The delayed start control circuit of claim 3, wherein the electrical signal outputted from the output terminal of the first voltage control circuit is a 12V level signal, and the electrical signal outputted from the output terminal of the second voltage control circuit is a 5V level signal.
7. The delayed start control circuit of claim 5, wherein said transistor is an NPN transistor, and said MOS transistor is an N-channel MOSFET.
8. The delayed start control circuit of claim 1, wherein said second pin is connected to said first pin through a diode, wherein a cathode of said diode is connected to said first pin and an anode of said diode is connected to said second pin;
the second pin is connected to the third pin through a capacitor and a resistor.
9. The delayed start control circuit of claim 1, further comprising a first rectifying diode and a second rectifying diode, wherein a cathode of the first rectifying diode is connected to the first pin, and an anode of the first rectifying diode is connected to a signal output terminal of the ac/dc universal power supply circuit;
and the cathode of the second rectifier diode is connected with the input end of the signal control circuit, and the anode of the second rectifier diode is connected with the signal output end of the alternating current-direct current universal power supply circuit.
10. A contactor device, characterized in that it comprises a delayed start control circuit according to any of the preceding claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220647688.2U CN216902685U (en) | 2022-03-23 | 2022-03-23 | Time delay start control circuit and contactor equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220647688.2U CN216902685U (en) | 2022-03-23 | 2022-03-23 | Time delay start control circuit and contactor equipment |
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| Publication Number | Publication Date |
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| CN216902685U true CN216902685U (en) | 2022-07-05 |
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|---|---|---|---|
| CN202220647688.2U Active CN216902685U (en) | 2022-03-23 | 2022-03-23 | Time delay start control circuit and contactor equipment |
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| Country | Link |
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| CN (1) | CN216902685U (en) |
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