CN210839514U - Double-thyristor control circuit and electronic equipment - Google Patents
Double-thyristor control circuit and electronic equipment Download PDFInfo
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- CN210839514U CN210839514U CN201922203633.3U CN201922203633U CN210839514U CN 210839514 U CN210839514 U CN 210839514U CN 201922203633 U CN201922203633 U CN 201922203633U CN 210839514 U CN210839514 U CN 210839514U
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Abstract
The embodiment of the utility model provides a relate to silicon controlled rectifier technical field, disclose a two silicon controlled rectifier control circuit and electronic equipment. Wherein, two silicon controlled rectifier control circuit include: the first silicon controlled rectifier, the second silicon controlled rectifier and the switching device; the first electrode of the first controllable silicon is connected with the first input end of the double controllable silicon control circuit, the second electrode of the first controllable silicon is connected with the second electrode of the second controllable silicon, the control electrode of the first controllable silicon is connected with the first end of the switch device, the control electrode of the second controllable silicon is connected with the second end of the switch device, the first electrode of the second controllable silicon is connected with the first output end of the double controllable silicon control circuit, and the second input end of the double controllable silicon control circuit is connected with the second output end of the double controllable silicon control circuit. In this way, the embodiment of the utility model provides a can be through two silicon controlled rectifiers of a switching device control, the cost is lower.
Description
Technical Field
The embodiment of the utility model provides a relate to silicon controlled rectifier technical field, concretely relates to two silicon controlled rectifier control circuit and electronic equipment.
Background
In many electronic products, thyristors are used in large numbers for output control of ac loads. Generally, one thyristor can complete the function control of a product, but for the product with safety requirements, two thyristors are needed to realize the function control, so that the situation that the load is not controlled when one thyristor is damaged is avoided.
At present, a double-thyristor control circuit generally needs two independent switching devices to respectively and independently control two thyristors, and the cost is high.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the embodiment of the utility model provides a two silicon controlled rectifier control circuit and electronic equipment can be through two silicon controlled rectifiers of a switching device control, and the cost is lower.
According to the utility model discloses an aspect of the embodiment provides a two silicon controlled rectifier control circuits, include: the first silicon controlled rectifier, the second silicon controlled rectifier and the switching device; the first electrode of the first controllable silicon is connected with the first input end of the double controllable silicon control circuit, the second electrode of the first controllable silicon is connected with the second electrode of the second controllable silicon, the control electrode of the first controllable silicon is connected with the first end of the switch device, the control electrode of the second controllable silicon is connected with the second end of the switch device, the first electrode of the second controllable silicon is connected with the first output end of the double controllable silicon control circuit, and the second input end of the double controllable silicon control circuit is connected with the second output end of the double controllable silicon control circuit; when the first end of the switching device is conducted with the second end of the switching device, the first input end of the double silicon controlled rectifier control circuit is conducted with the first output end of the double silicon controlled rectifier control circuit.
In an optional manner, the circuit further comprises: a first capacitor and a first resistor; the first end of the first capacitor is connected with the first electrode of the first controllable silicon, the second end of the first capacitor is connected with the first end of the first resistor, and the second end of the first resistor is connected with the second electrode of the first controllable silicon;
in an optional manner, the circuit further comprises: a second capacitor and a second resistor; the first end of the second capacitor is connected with the second electrode of the second controllable silicon, the second end of the second capacitor is connected with the first end of the second resistor, and the second end of the second resistor is connected with the first electrode of the second controllable silicon.
In an optional manner, the circuit further comprises: a third resistor; and the control electrode of the first controllable silicon is connected with the first end of the switching device through the third resistor.
In an optional manner, the circuit further comprises: a fourth capacitor and a fourth resistor; the control electrode of the first controllable silicon is connected with the first end of the third resistor through the fourth resistor, the first end of the fourth capacitor is connected with the first end of the third resistor, and the second end of the fourth capacitor is connected with the first electrode of the second controllable silicon.
In an optional mode, the first silicon controlled rectifier is a one-way silicon controlled rectifier or a two-way silicon controlled rectifier; the second controllable silicon is a one-way controllable silicon or a two-way controllable silicon.
In an optional manner, the third terminal of the switching device is configured to receive a control signal, and the switching device controls the first terminal of the switching device to be connected to or disconnected from the second terminal of the switching device according to the control signal.
In an alternative mode, the switching device is an opto-coupler switching device; the positive input end of the optical coupling switch device is connected with the power supply through a fifth resistor, the negative input end of the optical coupling switch device is the third end of the switch device, the first output end of the optical coupling switch device is the second end of the switch device, and the second output end of the optical coupling switch device is the first end of the switch device.
In an alternative mode, the switching device is a triode; the collector terminal of the triode is the first terminal of the switching device, the emitter terminal of the triode is the second terminal of the switching device, and the base terminal of the triode is the third terminal of the switching device.
In an optional manner, when the control signal is a low level signal, if the ac input to the first input terminal of the dual thyristor control circuit is positive, the ac output from the first output terminal of the dual thyristor control circuit is positive, and if the ac input to the first input terminal of the dual thyristor control circuit is negative, the ac output from the first output terminal of the dual thyristor control circuit is negative.
According to another aspect of the embodiments of the present invention, there is provided an electronic apparatus, including: a dual thyristor control circuit as described above.
The double silicon controlled rectifier control circuit of the embodiment of the utility model comprises a first silicon controlled rectifier, a second silicon controlled rectifier and a switch device, wherein a first electrode of the first silicon controlled rectifier is connected with a first input end of the double silicon controlled rectifier control circuit, a second electrode of the first silicon controlled rectifier is connected with a second electrode of the second silicon controlled rectifier, a control electrode of the first silicon controlled rectifier is connected with a first end of the switch device, a control electrode of the second silicon controlled rectifier is connected with a second end of the switch device, the first electrode of the second silicon controlled rectifier is connected with a first output end of the double silicon controlled rectifier control circuit, the second input end of the double silicon controlled rectifier control circuit is communicated with a second output end of the double silicon controlled rectifier control circuit, when the first end of the switch device is communicated with the second end of the switch device, the first input end of the double silicon controlled rectifier control circuit is communicated with the first output end, the cost of one switching device is saved, so the cost is lower, the short-circuit test in the safety certification can be passed, and the silicon controlled rectifier contactless switch control device has the advantage of silicon controlled rectifier contactless switch control.
The foregoing is only an overview of the embodiments of the present invention, and in order to make the technical means of the embodiments of the present invention more clearly understood, the embodiments of the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the embodiments of the present invention more obvious and understandable, the following detailed description of the embodiments of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic structural diagram of a dual thyristor control circuit according to an embodiment of the present invention;
FIG. 2 shows a schematic diagram of the switching device of FIG. 1;
fig. 3 shows a schematic structural diagram of a dual thyristor control circuit according to another embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The embodiment of the utility model provides a two silicon controlled rectifier control circuit can connect between power and load to accomplish the output control of power to the load.
Fig. 1 shows a schematic structural diagram of a dual thyristor control circuit according to an embodiment of the present invention. As shown in fig. 1, the dual thyristor control circuit 10 includes: a first thyristor 11, a second thyristor 12 and a switching device 13.
The first electrode T11 of the first thyristor 11 is connected to the first input end L-IN of the dual-thyristor control circuit 10, the second electrode T12 of the first thyristor 11 is connected to the second electrode T22 of the second thyristor 12, the control electrode G1 of the first thyristor 11 is connected to the first end M1 of the switching device 13, the control electrode G2 of the second thyristor 12 is connected to the second end M2 of the switching device 13, the first electrode T21 of the second thyristor 12 is connected to the first output end L-OUT of the dual-thyristor control circuit 10, and the second input end N-IN of the dual-thyristor control circuit 10 is connected to the second output end N-OUT of the dual-thyristor control circuit 10. When the first terminal M1 of the switching device 13 is conducted with the second terminal M2 of the switching device 13, the first input terminal L-IN of the dual thyristor control circuit 10 is conducted with the first output terminal L-OUT of the dual thyristor control circuit 10.
The first input end L-IN and the second input end N-IN of the dual thyristor control circuit 10 may be connected to an ac power supply. When the first input end L-IN and the second input end N-IN are connected with the alternating current power supply, the first input end L-IN is connected with a live wire end of the alternating current power supply, and the second input end N-IN is connected with a zero wire end of the alternating current power supply. Of course, IN some other embodiments, the first input terminal L-IN and the second input terminal N-IN of the dual thyristor control circuit 10 may also be connected to a dc power supply. When the first input end L-IN and the second input end N-IN are connected with the direct current power supply, the first input end L-IN is connected with the positive pole end of the direct current power supply, and the second input end N-IN is connected with the negative pole end of the direct current power supply.
The first thyristor 11 and the second thyristor 12 may be bidirectional thyristors. When the first controllable silicon 11 and the second controllable silicon 12 are both bidirectional controllable silicon, a first input end L-IN and a second input end N-IN of the double controllable silicon control circuit 10 are connected with an alternating current power supply, the first input end L-IN and the second input end N-IN are used for inputting alternating current, and a first output end L-OUT and a second output end N-OUT of the double controllable silicon control circuit 10 are used for outputting alternating current.
Of course, in some other embodiments, the first thyristor 11 and the second thyristor 12 may also be unidirectional thyristors. When the first controllable silicon 11 and the second controllable silicon 12 are both unidirectional controllable silicon, the first input end L-IN and the second input end N-IN of the double controllable silicon control circuit 10 are connected with a direct current power supply, the first input end L-IN and the second input end N-IN are used for inputting direct current, and the first output end L-OUT and the second output end N-OUT of the double controllable silicon control circuit 10 are used for outputting direct current.
The switching device 13 may include a third terminal M3, and the third terminal M3 of the switching device 13 is configured to receive a control signal, so that the switching device 13 controls the first terminal M1 of the switching device 13 to be connected with or disconnected from the second terminal M2 of the switching device 13 according to the control signal. When the first terminal M1 of the switching device 13 is conducted with the second terminal M2 of the switching device 13, the current flows from the second terminal M2 of the switching device 13 to the first terminal M1 of the switching device 13.
The switching device 13 may be an optocoupler switching device or another switching device. The switching device 13 may be selected according to the actual use. For example, when there is no isolation requirement, the switching device may be a transistor or other analog switch-like semiconductor device; when there is an isolation requirement, the switching device 13 may be an opto-coupler switching device.
As shown in fig. 2, when the switching device 13 is the optical coupler switching device 131, the positive input terminal U1 of the optical coupler switching device 131 is connected to the power Vcc through a fifth resistor R5, the negative input terminal U2 of the optical coupler switching device 131 is the third terminal M3 of the switching device 13, the first output terminal U3 of the optical coupler switching device 131 is the second terminal U3 of the switching device 13, and the second output terminal U4 of the optical coupler switching device 131 is the first terminal M1 of the switching device 13. That is, the negative input terminal U2 of the optocoupler switch 131 is used for receiving a control signal, the first output terminal U3 of the optocoupler switch 131 is connected to the gate G2 of the second thyristor 12, and the second output terminal U4 of the optocoupler switch 131 is connected to the gate G1 of the first thyristor 11. The control signal may be a pulse width modulation signal. When the control signal is at a high level, the positive input terminal U1 of the optocoupler switch 131 is not conducted with the negative input terminal U2 of the optocoupler switch 131, and the first output terminal U3 of the optocoupler switch 131 and the second output terminal U4 of the optocoupler switch 131 are also not conducted; when the control signal is at a low level, the positive input end U1 of the optocoupler switch device 131 is connected to the negative input end U2 of the optocoupler switch device 131, and the light emitter in the optocoupler switch device 131 emits light, so that the light receiver in the optocoupler switch device 131 receives light and then generates a photocurrent, and thus the first output end U3 of the optocoupler switch device 131 and the second output end U4 of the optocoupler switch device 131 are connected.
Optionally, the optocoupler switch 131 may specifically be a zero-cross trigger dual-silicon output optocoupler, for example, the MOC3061, and then the positive input terminal U1, the negative input terminal U2, the first output terminal U3, and the second output terminal U4 of the optocoupler switch 131 correspond to the first pin, the second pin, the fourth pin, and the sixth pin of the zero-cross trigger dual-silicon output optocoupler, respectively.
In some other embodiments, when the switching device 13 is a transistor (not shown), if the transistor is a PNP transistor, the collector terminal of the transistor is the first terminal M1 of the switching device 13, the emitter terminal of the transistor is the second terminal M2 of the switching device 13, and the base terminal of the transistor is the third terminal M3 of the switching device. The control signal is received through the base terminal of the triode, when the control signal is at a low level, the emitter terminal and the collector terminal of the triode are conducted, that is, the first terminal M1 and the second terminal M2 of the switching device 13 are conducted, and a current flows from the collector terminal of the triode to the emitter terminal of the triode, when the control signal is at a high level, the emitter terminal and the collector terminal of the triode are disconnected, that is, the first terminal M1 and the second terminal M2 of the switching device 13 are disconnected. Of course, in some other embodiments, the transistor may also be an NPN transistor, where when the control signal is at a high level, the emitter terminal and the collector terminal of the transistor are turned on, and when the control signal is at a low level, the emitter terminal and the collector terminal of the transistor are turned off.
IN the present embodiment, the first input terminal L-IN and the second input terminal N-IN of the dual thyristor control circuit 10 are connected to an AC power source. When the control signal is a low level signal, the first output terminal U3 of the optocoupler switch device 131 and the second output terminal U4 of the optocoupler switch device 131 are turned on, and if the ac input by the first input terminal L-IN of the dual thyristor control circuit 10 is positive, the control loop of the dual thyristor control circuit 10 is: the current flows into a first electrode T11 of the first controlled silicon 11 from a first input end L-IN, flows OUT through a control electrode G1 of the first controlled silicon 11, flows into a control electrode G2 of the second controlled silicon 12 through a second output end U4 of the optical coupling switching device 131 and a first output end U3 of the optical coupling switching device 131, flows OUT through a first electrode T21 of the second controlled silicon 12, and flows into a second input end N-IN of the double controlled silicon control circuit 10 from a second output end N-OUT of the double controlled silicon control circuit 10 after passing through a load connected with the double controlled silicon control circuit 10, so that a loop is formed. At this time, the first electrode T11 of the first thyristor 11 is positive, the control electrode G1 of the first thyristor 11 is negative with respect to the first end T11, and the first thyristor 11 is triggered in the negative direction, that is, the first thyristor 11 works in the third quadrant, so that the working current of the first thyristor 11 flows from the first electrode T11 of the first thyristor 11 to the second electrode T12 of the first thyristor 11; the first electrode T21 of the second thyristor 12 is negative with respect to the control electrode G2 of the second thyristor 12, and the second thyristor 12 is triggered in the positive direction, i.e., the second thyristor 12 operates in the first quadrant, so that the operating current of the second thyristor 12 flows from the second electrode T22 of the second thyristor 12 to the first terminal T21, and thus the first thyristor 11 and the second thyristor 12 are turned on simultaneously. The main current loop of the dual thyristor control circuit 10 is: the current flows into the first electrode T11 of the first controlled silicon 11 from the first input end L-IN, flows to the second electrode T12 of the first controlled silicon 11, flows to the first electrode T21 of the second controlled silicon 12 through the second electrode T22 of the second controlled silicon 12, and flows into the second input end N-IN of the double controlled silicon control circuit 10 from the second output end N-OUT of the double controlled silicon control circuit 10 after passing through the load connected with the double controlled silicon control circuit 10, thereby forming a loop.
If the alternating current input by the first input end L-IN of the dual thyristor control circuit 10 is negative, the current direction of the control loop of the dual thyristor control circuit 10 is opposite to the situation that the alternating current input by the first input end L-IN is positive, the first thyristor 11 works IN the first quadrant, the second thyristor 12 works IN the third quadrant, the first thyristor 11 and the second thyristor 12 can be simultaneously conducted, and at this time, the current direction of the working loop of the dual thyristor control circuit 10 is opposite to the situation that the alternating current input by the first input end L-IN is positive.
Therefore, when the control signal is a low level signal, the dual thyristor control circuit 10 inputs an alternating current, and the first thyristor 11 and the second thyristor 12 can alternately and stably operate in the first quadrant and the third quadrant, respectively. When the control signal is a low level signal, if the ac input from the first input terminal L-IN of the dual thyristor control circuit 10 is positive, the ac output from the first output terminal L-OUT of the dual thyristor control circuit 10 is positive, and if the ac input from the first input terminal N-IN of the dual thyristor control circuit 10 is negative, the ac output from the first output terminal L-OUT of the dual thyristor control circuit 10 is negative.
When the short circuit test in the safety certification requirement is carried out, the two pins of any device (except the switch device) are short-circuited, no output exists, and therefore the safety of the circuit can be guaranteed. For example, when the first electrode T11 and the second electrode T12 of the first thyristor 11 are short-circuited, if the switching device 13 is not turned on, the second thyristor 12 is not turned on, and the first input terminal L-IN and the first output terminal L-OUT of the dual thyristor control circuit 10 are not turned on, the dual thyristor control circuit 10 does not have output, and if the switching device 13 is turned on, the second thyristor 12 can normally operate; when the first electrode T21 and the second electrode T22 of second silicon controlled rectifier 12 short circuit, if switching device 13 does not switch on, first silicon controlled rectifier 11 does not switch on, and the first input end L-IN and the first output end L-OUT of two silicon controlled rectifier control circuit 10 do not switch on, then two silicon controlled rectifier control circuit 10 can not have the output, if switching device 13 switches on, first silicon controlled rectifier 11 can normal work to when arbitrary silicon controlled rectifier damages, the circuit homoenergetic is normal work, thereby guarantee the circuit safety.
The utility model discloses two silicon controlled rectifier control circuit 10 include first silicon controlled rectifier 11, second silicon controlled rectifier 12 and switching device 13, first input L-IN of two silicon controlled rectifier control circuit 10 is connected to first electrode T11 of first silicon controlled rectifier 11, second electrode T22 of second silicon controlled rectifier 12 is connected to second electrode T12 of first silicon controlled rectifier 11, first end M1 of switching device 13 is connected to first silicon controlled rectifier 11's control pole G1, second end M2 of second silicon controlled rectifier 12's control pole G2 connecting switch device 13, first output L-OUT of two silicon controlled rectifier control circuit 10 is connected to second electrode T21 of second silicon controlled rectifier 12, second input N-IN of two silicon controlled rectifier control circuit 10 and second output N-OUT of two silicon controlled rectifier control circuit 10 communicate, when first end M1 of switching device 13 and second end M2 of switching device 13 switch on, first input L-IN of two silicon controlled rectifier control circuit 10 and two silicon controlled rectifier control circuit 10's first end M2 switch on The output end L-OUT is conducted, two silicon controlled rectifiers can be controlled through one switching device, the cost of one switching device is saved, the cost is low, short-circuit test in safety certification can be achieved, and the advantage of silicon controlled rectifier contactless switching control is achieved.
Fig. 3 shows a schematic structural diagram of a dual thyristor control circuit according to another embodiment of the present invention. As shown in fig. 3, the difference from the above embodiment is that the dual thyristor control circuit 10 further includes: the circuit comprises a first capacitor C1, a second capacitor C2, a fourth capacitor C4, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4.
The first end of the first capacitor C1 is connected to the first end T11 of the first thyristor T11, the second end of the first capacitor C1 is connected to the first end of the first resistor R1, and the second end of the first resistor R1 is connected to the second end of the first thyristor T11. A first terminal of the second capacitor C2 is connected to the second terminal T21 of the second thyristor 12, a second terminal of the second capacitor C2 is connected to a first terminal of the second resistor R2, and a second terminal of the second resistor R2 is connected to a first terminal of the second thyristor 12. By arranging the first capacitor C1 and the first resistor R1 as the absorption protection element of the first thyristor 11 and the second capacitor C2 and the second resistor R2 as the absorption protection element of the second thyristor 12, the thyristor du/dt can be prevented from being damaged due to too high voltage.
The gate G1 of the first thyristor 11 is connected to the second output terminal U4 of the optocoupler switch device 131 (i.e., the first terminal M1 of the switch device 13) through a third resistor R3. The control electrode G1 of the first thyristor 11 is connected to the first end of the third resistor R3 through the fourth resistor R4, the first end of the fourth capacitor C4 is connected to the first end of the third resistor R3, and the second end of the fourth capacitor C4 is connected to the first electrode T21 of the second thyristor 12. The third resistor R3, the fourth resistor R4 and the fourth capacitor C4 are arranged to form an absorption loop, so that the false triggering rate of the bidirectional photoelectric coupler can be reduced.
In this embodiment, when the ac power is input, timing is started when the ac power zero point is detected, and a control signal is input after a time delay to trigger the first output terminal U3 of the optocoupler switch device 131 and the second output terminal U4 of the optocoupler switch device 131 to be turned on. The delay time can be set as required, and the longer the delay time is, the smaller the conduction angle is, the smaller the effective value of the output voltage of the double silicon controlled control circuit 10 is. When the load of the dual thyristor control circuit 10 is a motor, the speed and power of the motor can be controlled by changing the extension time to change the effective value of the output voltage of the dual thyristor control circuit 10.
IN this embodiment, when the control signal is a low level signal, the first output terminal U3 of the optocoupler switch device 131 and the second output terminal U4 of the optocoupler switch device 131 are turned on, and at this time, if the ac input by the first input terminal L-IN of the dual thyristor control circuit 10 is positive, the control loop of the dual thyristor control circuit 10 is: the current flows into the first electrode T11 of the first controlled silicon 11 from the first input end L-IN, flows OUT through the control electrode G1 of the first controlled silicon 11, flows into the control electrode G2 of the second controlled silicon 12 through the fourth resistor R4, the third resistor R3, the second output end U4 of the optical coupling switching device 131 and the first output end U3 of the optical coupling switching device 131, flows OUT through the first electrode T21 of the second controlled silicon 12, and flows into the second input end N-IN of the double controlled silicon control circuit 10 from the second output end N-OUT of the double controlled silicon control circuit 10 after passing through a load connected with the double controlled silicon control circuit 10, thereby forming a loop. The first electrode T11 of the first thyristor 11 is positive, the control electrode G1 of the first thyristor 11 is negative with respect to the first end T11, and the first thyristor 11 is triggered in the negative direction, that is, the first thyristor 11 operates in the third quadrant, so that the working current of the first thyristor 11 flows from the first electrode T11 of the first thyristor 11 to the second electrode T12 of the first thyristor 11; the first electrode T21 of the second thyristor 12 is negative with respect to the control electrode G2 of the second thyristor 12, and the second thyristor 12 is triggered in the positive direction, i.e., the second thyristor 12 operates in the first quadrant, so that the operating current of the second thyristor 12 flows from the second electrode T22 of the second thyristor 12 to the first terminal T21, and thus the first thyristor 11 and the second thyristor 12 are turned on simultaneously. The main current loop of the dual thyristor control circuit 10 is: the current flows into the first electrode T11 of the first controlled silicon 11 from the first input end L-IN, flows to the second electrode T12 of the first controlled silicon 11, flows to the first electrode T21 of the second controlled silicon 12 through the second electrode T22 of the second controlled silicon 12, and flows into the second input end N-IN of the double controlled silicon control circuit 10 from the second output end N-OUT of the double controlled silicon control circuit 10 after passing through the load connected with the double controlled silicon control circuit 10, thereby forming a loop.
If the alternating current input by the first input end L-IN of the dual thyristor control circuit 10 is negative, the current direction of the control loop of the dual thyristor control circuit 10 is opposite to the situation that the alternating current input by the first input end L-IN is positive, the first thyristor 11 works IN the first quadrant, the second thyristor 12 works IN the third quadrant, the first thyristor 11 and the second thyristor 12 can be simultaneously conducted, and at this time, the current direction of the working loop of the dual thyristor control circuit 10 is opposite to the situation that the alternating current input by the first input end L-IN is positive.
The utility model discloses two silicon controlled rectifier control circuit 10 include first silicon controlled rectifier 11, second silicon controlled rectifier 12 and switching device 13, first input L-IN of two silicon controlled rectifier control circuit 10 is connected to first electrode T11 of first silicon controlled rectifier 11, second electrode T22 of second silicon controlled rectifier 12 is connected to second electrode T12 of first silicon controlled rectifier 11, first end M1 of switching device 13 is connected to first silicon controlled rectifier 11's control pole G1, second end M2 of second silicon controlled rectifier 12's control pole G2 connecting switch device 13, first output L-OUT of two silicon controlled rectifier control circuit 10 is connected to second electrode T21 of second silicon controlled rectifier 12, second input N-IN of two silicon controlled rectifier control circuit 10 and second output N-OUT of two silicon controlled rectifier control circuit 10 communicate, when first end M1 of switching device 13 and second end M2 of switching device 13 switch on, first input L-IN of two silicon controlled rectifier control circuit 10 and two silicon controlled rectifier control circuit 10's first end M2 switch on The output end L-OUT is conducted, two silicon controlled rectifiers can be controlled through one switching device, the cost of one switching device is saved, the cost is low, short-circuit test in safety certification can be achieved, and the advantage of silicon controlled rectifier contactless switching control is achieved.
The embodiment of the utility model provides a still provide an electronic equipment, this electronic equipment includes the two silicon controlled rectifier control circuit in above-mentioned arbitrary embodiment.
Alternatively, the electronic device may be a smart switch or the like for connecting between the power supply and the load.
Optionally, the electronic device may further include a motor, and the motor is connected to an output end of the dual thyristor control circuit, so that the dual thyristor control circuit may control start and stop of the motor. The double-thyristor control circuit is also used for controlling the speed and the power of the motor by inputting control signals with different conduction angles.
It should be noted that unless otherwise indicated, technical or scientific terms used in accordance with embodiments of the present invention shall have the ordinary meaning as understood by those skilled in the art to which embodiments of the present invention pertain.
In the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated on the drawings, which is only for convenience of describing the embodiments of the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the embodiments of the present invention.
Furthermore, the technical terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the novel embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In describing the novel embodiments of this embodiment, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. A dual thyristor control circuit, comprising: the first silicon controlled rectifier, the second silicon controlled rectifier and the switching device;
the first electrode of first silicon controlled rectifier is connected the first input of two silicon controlled rectifier control circuit, the second electrode of first silicon controlled rectifier is connected the second electrode of second silicon controlled rectifier, the control pole of first silicon controlled rectifier is connected the first end of switching device, the control pole of second silicon controlled rectifier is connected the second end of switching device, the first electrode of second silicon controlled rectifier is connected the first output of two silicon controlled rectifier control circuit, the second input of two silicon controlled rectifier control circuit is connected the second output of two silicon controlled rectifier control circuit.
2. The circuit of claim 1, further comprising: a first capacitor and a first resistor;
the first end of the first capacitor is connected with the first electrode of the first controllable silicon, the second end of the first capacitor is connected with the first end of the first resistor, and the second end of the first resistor is connected with the second electrode of the first controllable silicon.
3. The circuit of claim 1, further comprising: a second capacitor and a second resistor;
the first end of the second capacitor is connected with the second electrode of the second controllable silicon, the second end of the second capacitor is connected with the first end of the second resistor, and the second end of the second resistor is connected with the first electrode of the second controllable silicon.
4. The circuit of claim 1, further comprising: a third resistor;
and the control electrode of the first controllable silicon is connected with the first end of the switching device through the third resistor.
5. The circuit of claim 4, further comprising: a fourth capacitor and a fourth resistor;
the control electrode of the first controllable silicon is connected with the first end of the third resistor through the fourth resistor, the first end of the fourth capacitor is connected with the first end of the third resistor, and the second end of the fourth capacitor is connected with the first electrode of the second controllable silicon.
6. The circuit of claim 1,
the first silicon controlled rectifier is a one-way silicon controlled rectifier or a two-way silicon controlled rectifier;
the second controllable silicon is a one-way controllable silicon or a two-way controllable silicon.
7. The circuit according to any one of claims 1-6, wherein the third terminal of the switching device is configured to receive a control signal, and the switching device controls the first terminal of the switching device to be connected to or disconnected from the second terminal of the switching device according to the control signal.
8. The circuit of claim 7, wherein the switching device is an optocoupler switching device;
the positive input end of the optical coupling switch device is correspondingly connected with the power supply through a fifth resistor, the negative input end of the optical coupling switch device is the third end of the switch device, the first output end of the optical coupling switch device is the second end of the switch device, and the second output end of the optical coupling switch device is the first end of the switch device.
9. The circuit of claim 7, wherein the switching device is a triode;
the collector terminal of the triode is the first terminal of the switching device, the emitter terminal of the triode is the second terminal of the switching device, and the base terminal of the triode is the third terminal of the switching device.
10. An electronic device, characterized in that the electronic device comprises: a dual thyristor control circuit as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922203633.3U CN210839514U (en) | 2019-12-10 | 2019-12-10 | Double-thyristor control circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922203633.3U CN210839514U (en) | 2019-12-10 | 2019-12-10 | Double-thyristor control circuit and electronic equipment |
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| CN210839514U true CN210839514U (en) | 2020-06-23 |
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| CN201922203633.3U Active CN210839514U (en) | 2019-12-10 | 2019-12-10 | Double-thyristor control circuit and electronic equipment |
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