CN109637893B - Magnetic latching relay control system and magnetic latching relay system - Google Patents
Magnetic latching relay control system and magnetic latching relay system Download PDFInfo
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- CN109637893B CN109637893B CN201811364749.9A CN201811364749A CN109637893B CN 109637893 B CN109637893 B CN 109637893B CN 201811364749 A CN201811364749 A CN 201811364749A CN 109637893 B CN109637893 B CN 109637893B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
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Abstract
The application provides a magnetic latching relay control system and a magnetic latching relay system compatible with manual and program control modes. The magnetic latching relay control system includes: the power-on pulse control circuit comprises a manual mode power-on pulse trigger signal generating circuit, a program-controlled mode power-on pulse trigger signal input circuit, a mode control circuit and a power-on pulse generating circuit. The manual power-on pulse trigger signal generating circuit generates a manual power-on pulse trigger signal through manual control and inputs the manual power-on pulse trigger signal into the mode control circuit. The program control mode power-on pulse trigger signal input circuit inputs an external program control power-on pulse trigger signal into the mode control circuit. The mode control circuit gates a manual power-on pulse trigger signal or an external program-controlled power-on pulse trigger signal according to the control mode and outputs a corresponding power-on pulse trigger signal. The power-on pulse generating circuit is electrically connected with the mode control circuit and generates a power-on pulse for the magnetic latching relay according to a power-on pulse trigger signal from the mode control circuit.
Description
Technical Field
The invention relates to a magnetic latching relay, in particular to a magnetic latching relay control system compatible with manual and program control modes and a magnetic latching relay system comprising the control system.
Background
A magnetic latching relay is an automatic switch that can automatically switch a circuit on and off. The opening and closing state of the magnetic latching relay contact is maintained by the magnetic force generated by the permanent magnet, and the switching state is completed by a power-on pulse or a power-off pulse with a certain width. The power-on pulse acts on the power-on coil to complete the power-on action, and the power-off pulse acts on the power-off coil to complete the power-off action. When the contact is in the holding state, the coil does not need to be electrified, and the state of the relay can be maintained by the magnetic force of the permanent magnet. The magnetic latching relay is generally used for a power input interface of a product, and a power-on pulse or a power-off pulse is provided through an external magnetic latching relay control system.
The magnetic latching relay control system is generally controlled in a manual or program control mode. The magnetic latching relay control system in manual mode typically sends a power-up pulse or a power-down pulse by means of a key. The manual mode is more applied in the product debugging process, has the advantages of being capable of being triggered at any time and has the defect of needing manual participation.
The magnetic latching relay control system in the program control mode generally sends power-on pulse or power-off pulse in a control software triggering mode, and is applied to a lot of test items such as temperature cycle tests and the like in the process of long-time and periodic test of products. The advantage of the program control mode is that it does not require human intervention and can be controlled automatically. The method has the disadvantages that a software platform needs to be established for control, and the method cannot be used under the condition without the support of the software platform.
A single-mode magnetic latching relay control system in a manual mode or a program control mode often cannot meet the requirements of automatic testing and convenient application at the same time in the product development and use processes.
Disclosure of Invention
The application provides a magnetic latching relay control system compatible with manual and program control modes, which can solve the problem that the single-mode magnetic latching relay control system in the manual mode or the program control mode cannot simultaneously take into account automatic testing and convenient application in the product development and use process.
According to an aspect of the present invention, there is provided a magnetic latching relay control system compatible with manual and programmed modes, comprising: the power-on pulse trigger signal generating circuit comprises a manual mode power-on pulse trigger signal generating circuit, a program-controlled mode power-on pulse trigger signal input circuit, a mode control circuit and a power-on pulse generating circuit, wherein:
the manual mode power-on pulse trigger signal generating circuit is electrically connected with the mode control circuit and is used for generating a manual power-on pulse trigger signal through manual control and inputting the manual power-on pulse trigger signal into the mode control circuit;
the program control mode power-on pulse trigger signal input circuit is electrically connected with the mode control circuit and is used for inputting an external program control power-on pulse trigger signal into the mode control circuit;
the mode control circuit has two control modes of a manual mode and a program control mode, and is used for gating a manual power-on pulse trigger signal or an external program control power-on pulse trigger signal according to one of the two control modes and outputting a corresponding power-on pulse trigger signal;
the power-on pulse generating circuit is electrically connected with the mode control circuit and used for generating a power-on pulse for the magnetic latching relay according to a power-on pulse trigger signal from the mode control circuit.
According to some embodiments, the power-on pulse generation circuit is configured to generate the power-on pulse according to a pulse width and a voltage required for power-on of the magnetic latching relay after being triggered by the power-on pulse trigger signal.
According to some embodiments, the magnetic latching relay control system further comprises: manual mode outage pulse trigger signal generating circuit, programme-controlled mode outage pulse trigger signal input circuit and outage pulse generating circuit, wherein:
the manual mode power-off pulse trigger signal generating circuit is electrically connected with the mode control circuit and used for generating a manual power-off pulse trigger signal through manual control and inputting the manual power-off pulse trigger signal into the mode control circuit;
the program-controlled mode power-off pulse trigger signal input circuit is electrically connected with the mode control circuit and is used for inputting an external program-controlled power-off pulse trigger signal into the mode control circuit;
the mode control circuit is also used for gating a manual power-off pulse trigger signal or an external program-controlled power-off pulse trigger signal according to one of the two control modes and outputting a corresponding power-off pulse trigger signal;
the power-off pulse generating circuit is electrically connected with the mode control circuit and used for generating power-off pulses for the magnetic latching relay according to the power-off pulse trigger signals from the mode control circuit.
According to some embodiments, the power-off pulse generation circuit is configured to generate the power-off pulse according to a pulse width and a voltage required for the magnetic latching relay to be powered off after being triggered by the power-off pulse trigger signal.
According to some embodiments, the mode control circuit comprises:
and the power-on pulse trigger signal gating circuit is used for gating the manual power-on pulse trigger signal or the external program control power-on pulse trigger signal according to one of the two control modes.
According to some embodiments, the mode control circuit further comprises:
and the power-on pulse trigger signal filtering circuit is used for filtering the manual power-on pulse trigger signal or the external program-controlled power-on pulse trigger signal from the power-on pulse trigger signal gating circuit and outputting the power-on pulse trigger signal.
According to some embodiments, the mode control circuit comprises:
and the power-off pulse trigger signal gating circuit is used for gating the manual power-off pulse trigger signal or the external program-controlled power-off pulse trigger signal according to one of the two control modes.
According to some embodiments, the mode control circuit further comprises:
and the power-off pulse trigger signal filtering circuit is used for filtering the manual power-off pulse trigger signal or the external program-controlled power-off pulse trigger signal from the power-off pulse trigger signal gating circuit and outputting the power-off pulse trigger signal.
According to some embodiments, the mode control circuit further comprises:
and the mode setting circuit is used for setting the control mode of the mode control circuit.
According to another aspect of the present invention, there is provided a magnetic latching relay system comprising any one of the magnetic latching relay control systems described above.
According to the embodiment of the invention, the mode control circuit is utilized to set the manual mode and the program control mode, the two control modes are compatible, and the mode setting is carried out according to the requirements in the use process, so that the problem that the single-mode magnetic latching relay control system in the manual mode or the program control mode cannot simultaneously give consideration to automatic testing and convenient application in the product development and use process is solved.
Drawings
Other characteristics and advantages of the invention will become more apparent in the following detailed description of non-limiting embodiments thereof, with reference to the attached drawings, in which:
FIG. 1 shows a schematic diagram of a manual and programmable mode compatible magnetic latching relay control system according to an embodiment of the present invention;
FIG. 2 shows a block schematic diagram of a mode control circuit according to an embodiment of the invention.
Description of reference numerals:
1 manual mode power-on pulse trigger signal generation circuit
2 program control mode power-on pulse trigger signal input circuit
3 manual mode outage pulse trigger signal generation circuit
4 program control mode power-off pulse trigger signal input circuit
5-mode control circuit
6 power-on pulse generating circuit and 7 power-off pulse generating circuit
8 power-on pulse output circuit and 9 power-off pulse output circuit
10 power-on pulse trigger signal gating circuit 11 power-on pulse trigger signal filtering circuit
12 power-off pulse trigger signal gating circuit 13 power-off pulse trigger signal filtering circuit
14-mode setting circuit
51. 52, 53, 54, 55, 56 interface
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the embodiments of the invention and that the invention is not limited thereto. It should be noted that, for convenience of description, only the parts closely related to the embodiments are shown in the drawings. Embodiments may be embodied in many different forms and should not be construed as limited to the forms set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. The same reference numbers in the drawings identify the same or similar elements.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other alternatives. It is to be understood that the block diagrams shown in the figures do not necessarily correspond to physically separate entities.
FIG. 1 shows a schematic diagram of a manual and programmable mode compatible magnetic latching relay control system according to an embodiment of the present invention.
As shown in fig. 1, a magnetic latching relay control system compatible with manual and program control modes according to an embodiment of the present invention includes: the power-on control circuit comprises a manual mode power-on pulse trigger signal generating circuit 1, a program control mode power-on pulse trigger signal input circuit 2, a mode control circuit 5 and a power-on pulse generating circuit 6.
The manual mode power-on pulse trigger signal generating circuit 1 is electrically connected with the mode control circuit 5, and is used for generating a manual power-on pulse trigger signal through manual control and inputting the manual power-on pulse trigger signal into the mode control circuit 5.
The program control mode power-on pulse trigger signal input circuit 2 is electrically connected with the mode control circuit 5 and is used for inputting an external program control power-on pulse trigger signal into the mode control circuit 5.
The mode control circuit 5 has two control modes, namely a manual mode and a program control mode, and is used for gating a manual power-on pulse trigger signal or an external program control power-on pulse trigger signal according to one of the two control modes and outputting a corresponding power-on pulse trigger signal.
The power-on pulse generating circuit 6 is electrically connected to the mode control circuit 5, and generates a power-on pulse for the magnetic latching relay in accordance with a power-on pulse trigger signal from the mode control circuit 5.
According to some embodiments, the power-on pulse generating circuit 6 is configured to generate the power-on pulse according to a pulse width and a voltage required for power-on of the magnetic latching relay after being triggered by the power-on pulse trigger signal.
As shown in fig. 1, according to some embodiments, the magnetic latching relay control system further comprises: a manual mode power-off pulse trigger signal generating circuit 3, a program-controlled mode power-off pulse trigger signal input circuit 4 and a power-off pulse generating circuit 7.
The manual mode power-off pulse trigger signal generating circuit 3 is electrically connected with the mode control circuit 5 and is used for generating a manual power-off pulse trigger signal through manual control and inputting the manual power-off pulse trigger signal into the mode control circuit 5.
The program-controlled mode power-off pulse trigger signal input circuit 4 is electrically connected with the mode control circuit 5 and is used for inputting an external program-controlled power-off pulse trigger signal into the mode control circuit 5.
The mode control circuit 5 is further configured to gate the manual power-off pulse trigger signal or the external program-controlled power-off pulse trigger signal according to one of the two control modes, and output a corresponding power-off pulse trigger signal.
The deenergizing pulse generating circuit 7 is electrically connected to the mode control circuit 5 for generating a deenergizing pulse for the magnetic latching relay according to a deenergizing pulse trigger signal from the mode control circuit 5.
According to some embodiments, the deenergizing pulse generating circuit 7 is configured to generate the deenergizing pulse according to a pulse width and a voltage required for deenergizing the magnetic latching relay after being triggered by the deenergizing pulse trigger signal.
According to some embodiments, as shown in fig. 1, the output terminal of the power-on pulse generating circuit 6 is connected to the input terminal signal line of the power-on pulse output circuit 8, and the output terminal of the power-off pulse generating circuit 7 is connected to the input terminal signal line of the power-off pulse output circuit 9.
FIG. 2 shows a block schematic diagram of a mode control circuit according to an embodiment of the invention.
As shown in fig. 2, the mode control circuit 5 according to an embodiment of the present invention includes a power-on pulse trigger signal gating circuit 10 for gating a manual power-on pulse trigger signal or an externally programmed power-on pulse trigger signal according to one of two control modes.
According to some embodiments, as shown in fig. 2, the mode control circuit 5 further includes a power-on pulse trigger signal filtering circuit 11 for filtering the manual power-on pulse trigger signal or the external programmed power-on pulse trigger signal from the power-on pulse trigger signal gating circuit 10 and outputting the power-on pulse trigger signal.
According to some embodiments, as shown in FIG. 2, the mode control circuit 5 includes a power down pulse trigger signal gating circuit 12 for gating either a manual power down pulse trigger signal or an externally programmed power down pulse trigger signal according to one of two control modes.
According to some embodiments, as shown in fig. 2, the mode control circuit 5 further includes a power-off pulse trigger signal filtering circuit 13 for filtering the manual power-off pulse trigger signal or the external programmed power-off pulse trigger signal from the power-off pulse trigger signal gating circuit 12 and outputting the power-off pulse trigger signal.
According to some embodiments, as shown in fig. 2, the mode control circuit 5 further comprises a mode setting circuit 14 for setting a control mode of the mode control circuit 5.
According to some embodiments, as shown in fig. 2, the mode control circuit 5 includes interfaces 51, 52, 53, 54, 55, 56 for electrically connecting the manual mode power-on pulse trigger signal generation circuit 1, the programmed mode power-on pulse trigger signal input circuit 2, the manual mode power-off pulse trigger signal generation circuit 3, the programmed mode power-off pulse trigger signal input circuit 4, the power-on pulse generation circuit 6, and the power-off pulse generation circuit 7.
According to some embodiments, as shown in fig. 1 and 2, the output terminal of the manual mode power-on pulse trigger signal generating circuit 1 is connected to the input terminal signal line of the mode control circuit 5, and the output terminal of the programmable mode power-on pulse trigger signal input circuit 2 is connected to the input terminal signal line of the mode control circuit 5. The output end of the manual mode power-off pulse trigger signal generating circuit 3 is connected with the input end signal line of the mode control circuit 5, and the output end of the program-controlled mode power-off pulse trigger signal input circuit 4 is connected with the input end signal line of the mode control circuit 5. The output end of the mode control circuit 5 is connected with the input end signal line of the power-on pulse generating circuit 6, and the output end of the mode control circuit 5 is connected with the input end signal line of the power-off pulse generating circuit 7. The output end of the power-on pulse generating circuit 6 is connected with the input end signal line of the power-on pulse output circuit 8, and the output end of the power-off pulse generating circuit 7 is connected with the input end signal line of the power-off pulse output circuit 9.
According to the exemplary embodiment of the present invention, when the power-on control is performed in the manual mode, the mode control circuit 5 is set to the manual mode, the power-on pulse trigger signal generating circuit 1 generates a power-on pulse trigger signal in the manual mode, and the power-on pulse trigger signal is sent to the power-on pulse generating circuit 6 through the mode control circuit 5.
According to some embodiments, the power-on pulse trigger signal generated by the manual mode power-on pulse trigger signal generation circuit 1 is a power-on pulse trigger signal in the form of a TTL level. After being triggered by the power-on pulse trigger signal, the power-on pulse generating circuit 6 generates power-on pulses according to the pulse width and voltage required by the power-on of the magnetic latching relay, and then the power-on pulses are output to the magnetic latching relay by the power-on pulse output circuit 8.
According to the exemplary embodiment of the present invention, when the power-on control is performed in the program-controlled mode, the mode control circuit 5 is set to the program-controlled mode, and the power-on pulse trigger signal input circuit 2 in the program-controlled mode is utilized to send an external program-controlled power-on pulse trigger signal to the power-on pulse generation circuit 6 through the mode control circuit 5.
According to some embodiments, the power-on pulse trigger signal generated by the power-on pulse trigger signal generation circuit 2 in the program control mode is a signal in the form of a TTL level. After being triggered by the power-on pulse trigger signal, the power-on pulse generating circuit 6 generates power-on pulses according to the pulse width and voltage required by the power-on of the magnetic latching relay, and then the power-on pulses are output to the magnetic latching relay by the power-on pulse output circuit 8.
According to the exemplary embodiment of the present invention, when the power-off control is performed in the manual mode, the mode control circuit 5 is set to the manual mode, and the power-off pulse trigger signal is generated by the manual mode power-off pulse trigger signal generation circuit 3 and sent to the power-off pulse generation circuit 7 via the mode control circuit 5.
According to some embodiments, the power-down pulse trigger signal generated by the manual mode power-down pulse trigger signal generation circuit 3 is a signal in the form of TTL level. After being triggered by the power-off pulse trigger signal, the power-off pulse generating circuit 7 generates power-off pulses according to the pulse width and voltage required by the power-off of the magnetic latching relay, and then the power-off pulses are output to the magnetic latching relay by the power-off pulse output circuit 9.
According to the exemplary embodiment of the present invention, when the program-controlled mode performs the power-off control, the mode control circuit 5 is set to the program-controlled mode, and the external program-controlled power-off pulse trigger signal is transmitted to the power-off pulse generation circuit 7 through the mode control circuit 5 by using the program-controlled mode power-off pulse trigger signal input circuit 4.
According to some embodiments, the externally programmed power down pulse trigger signal is a signal in the form of a TTL level. After being triggered by the power-off pulse trigger signal, the power-off pulse generating circuit 7 generates power-off pulses according to the pulse width and voltage required by the power-off of the magnetic latching relay, and then the power-off pulses are output to the magnetic latching relay by the power-off pulse output circuit 9.
According to some embodiments, the present application also provides a magnetic latching relay system including a magnetic latching relay control system according to an embodiment of the present invention.
Those skilled in the art may implement the trigger signal generating circuit, the input circuit, the gating circuit, the filtering circuit, the pulse generating circuit, the pulse output circuit, etc. according to the embodiments of the present invention in various ways, which is not limited by the present invention. Since a person skilled in the art can easily implement the relevant circuits, a description of a specific circuit configuration is omitted here.
According to the concept and the embodiment of the invention, the mode control circuit is utilized to set the manual mode and the program control mode, and the two control modes are compatible.
According to the embodiment of the invention, mode setting is carried out according to requirements in the use process, so that the problem that a single-mode magnetic latching relay control system in a manual mode or a program control mode cannot simultaneously give consideration to automatic testing and convenient application in the product development and use process is solved.
The technical idea of the present invention and the embodiments according to the technical idea of the present invention are described above. Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the examples given herein. This application is intended to cover any variations, uses, or adaptations of the invention. Such variations, uses, or adaptations are to be regarded as a general matter of the invention and include such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims. It will be understood that the invention is not limited to what has been described above and shown in the drawings, but that various modifications and changes can be made by those skilled in the art without departing from the scope of the present disclosure.
Claims (10)
1. A manual and programmable mode compatible magnetic latching relay control system, comprising: the power-on pulse control circuit comprises a manual mode power-on pulse trigger signal generating circuit (1), a program-controlled mode power-on pulse trigger signal input circuit (2), a mode control circuit (5) and a power-on pulse generating circuit (6), wherein:
the manual mode power-on pulse trigger signal generating circuit (1) is electrically connected with the mode control circuit (5) and is used for generating a manual power-on pulse trigger signal through manual control and inputting the manual power-on pulse trigger signal into the mode control circuit (5);
the program-controlled mode power-on pulse trigger signal input circuit (2) is electrically connected with the mode control circuit (5) and is used for inputting an external program-controlled power-on pulse trigger signal into the mode control circuit (5);
the mode control circuit (5) has two control modes, namely a manual mode and a program control mode, and is used for gating the manual power-on pulse trigger signal or the external program control power-on pulse trigger signal according to one of the two control modes and outputting a corresponding power-on pulse trigger signal;
the power-on pulse generating circuit (6) is electrically connected with the mode control circuit (5) and is used for generating a power-on pulse for the magnetic latching relay according to the power-on pulse trigger signal from the mode control circuit (5).
2. The magnetic latching relay control system according to claim 1, wherein the power-on pulse generating circuit (6) is configured to generate the power-on pulse according to a pulse width and a voltage required for power-on of the magnetic latching relay after being triggered by the power-on pulse trigger signal.
3. The magnetic latching relay control system of claim 1, further comprising: manual mode power-off pulse trigger signal generating circuit (3), program-controlled mode power-off pulse trigger signal input circuit (4) and power-off pulse generating circuit (7), wherein:
the manual mode power-off pulse trigger signal generating circuit (3) is electrically connected with the mode control circuit (5) and is used for generating a manual power-off pulse trigger signal through manual control and inputting the manual power-off pulse trigger signal into the mode control circuit (5);
the programmable mode power-off pulse trigger signal input circuit (4) is electrically connected with the mode control circuit (5) and is used for inputting an external programmable power-off pulse trigger signal into the mode control circuit (5);
the mode control circuit (5) is also used for gating the manual power-off pulse trigger signal or the external program-controlled power-off pulse trigger signal according to one of the two control modes and outputting a corresponding power-off pulse trigger signal;
the power-off pulse generating circuit (7) is electrically connected with the mode control circuit (5) and is used for generating a power-off pulse for the magnetic latching relay according to the power-off pulse trigger signal from the mode control circuit (5).
4. A magnetic latching relay control system according to claim 3, characterized in that the deenergizing pulse generating circuit (7) is configured to generate the deenergizing pulse according to a pulse width and voltage required for deenergizing the magnetic latching relay after being triggered by the deenergizing pulse trigger signal.
5. A magnetic latching relay control system according to claim 1, characterized in that the mode control circuit (5) comprises:
and the power-on pulse trigger signal gating circuit (10) is used for gating the manual power-on pulse trigger signal or the external program control power-on pulse trigger signal according to one of the two control modes.
6. A magnetic latching relay control system according to claim 5, characterized in that the mode control circuit (5) further comprises:
and the power-on pulse trigger signal filtering circuit (11) is used for filtering the manual power-on pulse trigger signal or the external program-controlled power-on pulse trigger signal from the power-on pulse trigger signal gating circuit (10) and outputting the power-on pulse trigger signal.
7. A magnetic latching relay control system according to claim 3, characterized in that the mode control circuit (5) comprises:
and the power-off pulse trigger signal gating circuit (12) is used for gating the manual power-off pulse trigger signal or the external program-controlled power-off pulse trigger signal according to one of the two control modes.
8. The magnetic latching relay control system according to claim 7, characterized in that the mode control circuit (5) further comprises:
and the power-off pulse trigger signal filtering circuit (13) is used for filtering the manual power-off pulse trigger signal or the external program-controlled power-off pulse trigger signal from the power-off pulse trigger signal gating circuit (12) and outputting the power-off pulse trigger signal.
9. A magnetic latching relay control system according to claim 1, characterized in that the mode control circuit (5) further comprises:
a mode setting circuit (14) for setting a control mode of the mode control circuit (5).
10. A magnetically held relay system, comprising a magnetically held relay control system according to any of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811364749.9A CN109637893B (en) | 2018-11-16 | 2018-11-16 | Magnetic latching relay control system and magnetic latching relay system |
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| CN201811364749.9A CN109637893B (en) | 2018-11-16 | 2018-11-16 | Magnetic latching relay control system and magnetic latching relay system |
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| CN109637893B true CN109637893B (en) | 2020-04-03 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62242561A (en) * | 1986-04-08 | 1987-10-23 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Multiple actuator |
| US5128825A (en) * | 1990-02-01 | 1992-07-07 | Westinghouse Electric Corp. | Electrical contactor with controlled closure characteristic |
| CN2368153Y (en) * | 1999-02-03 | 2000-03-08 | 林李杰 | Self-holding energy-saving type ac. contactor |
| CN2497424Y (en) * | 2001-09-27 | 2002-06-26 | 陈丁人 | Switching system of wireless remote control is compatible with its hand-control |
| CN2519535Y (en) * | 2002-01-28 | 2002-10-30 | 黄华杰 | Remote controlled illuminating switch |
| CN2716932Y (en) * | 2004-02-20 | 2005-08-10 | 梁敏超 | An integrative digital radio control dual-purpose mechanical switch |
| CN102062833B (en) * | 2010-12-03 | 2015-05-20 | 北京航天万方科技有限公司 | Programmable airplane power supply characteristic comprehensive test apparatus |
| CN102568930A (en) * | 2010-12-07 | 2012-07-11 | 西安华澳电子科技有限公司 | Low pressure control relay circuit |
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