CN215682690U - Anti-electromagnetic interference state indicating lamp circuit - Google Patents
Anti-electromagnetic interference state indicating lamp circuit Download PDFInfo
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- CN215682690U CN215682690U CN202120487437.8U CN202120487437U CN215682690U CN 215682690 U CN215682690 U CN 215682690U CN 202120487437 U CN202120487437 U CN 202120487437U CN 215682690 U CN215682690 U CN 215682690U
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- electromagnetic interference
- electronic relay
- state
- status indicator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses an anti-electromagnetic interference state indicating lamp circuit, which comprises a resistor R1, an electronic relay, a state indicating lamp, a resistor R2 and an MOS (metal oxide semiconductor) switching tube which are sequentially connected between a working power supply and a grounding end, wherein the control end of the electronic relay and the control end of the MOS switching tube are respectively connected with a control circuit which controls the electronic relay and the MOS switching tube to be switched on and off simultaneously according to a state input signal so as to switch the state indicating lamp, the power supply input end of the control circuit is connected with a 5V direct-current power supply, the conduction interference of a power line of the state indicating lamp is blocked through the physical disconnection of the electronic relay, and the working state of state indication is effectively stabilized.
Description
[ technical field ]
The utility model relates to an anti-electromagnetic interference state indicating lamp circuit.
[ background art ]
The most conventional design of the working state of the electronic appliance is to display the working state of the electronic appliance through a state indicator lamp, and meanwhile, the working state of the state indicator lamp is used for judging the working state of a product, so the design of the working state of the state indicator lamp needs attention.
The stable state of the state indicator lamp depends on the quality of the indicator lamp and the circuit design principle, the current state indicator lamp is the LED indicator lamp which is most commonly used, the processing technology of the LED indicator lamp is mature, the reliability of the product quality is stable, the power of the LED indicator lamp is low, the working voltage is low DC (direct current) and is 0.3V-1V, but the LED lamp belongs to the semiconductor material manufacturing, and the state of the LED lamp is easy to change due to the interference of an external electromagnetic field, so the power supply design of the LED lamp is particularly important. The existing power supply design of the LED lamp generally adopts resistance voltage division power supply. As shown in fig. 1, the control circuit controls the on-off of the MOS switch tube according to the state input signal, when the MOS switch tube is turned on, the voltage is reduced to 0.3-1V within the operating range of the LED lamp through the voltage division of the resistor R to supply power to the LED lamp, but the resistor R cannot well suppress electromagnetic interference, so that the circuit is poor in design anti-interference performance, and the operating state of the LED is unstable.
[ contents of utility model ]
The utility model overcomes the defects of the technology and provides an anti-electromagnetic interference state indicating lamp circuit.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the anti-electromagnetic interference state indicating lamp circuit is characterized in that: the control circuit comprises a resistor R1, an electronic relay, a state indicator lamp, a resistor R2 and an MOS switch tube which are sequentially connected between a working power supply and a grounding end, wherein the control end of the electronic relay and the control end of the MOS switch tube are respectively connected with a control circuit which controls the electronic relay and the MOS switch tube to be simultaneously switched on and off according to a state input signal, so that the state indicator lamp is switched on and switched off, and the power supply input end of the control circuit is connected with a 5V direct-current power supply.
An anti-electromagnetic interference state indicator lamp circuit that as above characterized in that: the resistance value of the resistor R1 ranges from 10 omega to 10k omega.
An anti-electromagnetic interference state indicator lamp circuit that as above characterized in that: the resistance value of the resistor R2 ranges from 10 omega to 10k omega.
An anti-electromagnetic interference state indicator lamp circuit that as above characterized in that: the range of the current of the electronic relay is 10 mA-10A.
An anti-electromagnetic interference state indicator lamp circuit that as above characterized in that: the MOS switch tube is a unipolar control MOS tube.
An anti-electromagnetic interference state indicator lamp circuit that as above characterized in that: the status indicator lamp is an LED lamp or a resistance indicator lamp.
The utility model has the beneficial effects that:
the state indicator lamp has strong electromagnetic interference resistance, blocks the conduction interference of a power line of the state indicator lamp through the physical cutting of the electronic relay, and effectively stabilizes the working state of state indication.
[ description of the drawings ]
Fig. 1 is a schematic diagram of a prior art structure.
[ detailed description of the utility model ]
The following is a more detailed description of embodiments of the utility model, taken in conjunction with the accompanying drawings of which:
as shown in fig. 1, an anti-electromagnetic interference status indicator lamp circuit comprises a resistor R1, an electronic relay 1, a status indicator lamp 2, a resistor R2, and a MOS switch tube 3, which are sequentially connected between a working power supply and a ground terminal, wherein a control end of the electronic relay 1 and a control end of the MOS switch tube 3 are respectively connected with a control circuit 4 for controlling the electronic relay 1 and the MOS switch tube 3 to be simultaneously turned on and off according to a status input signal, so that the status indicator lamp 2 is turned on and off, and a power input end of the control circuit 4 is connected with a 5V direct current power supply.
The working power supply is from the power supply of an electric appliance product, the state disorder of the LED lamp is easily caused after the product power supply is interfered, the circuit adopts the electronic relay 1 to be physically disconnected, an interference signal is physically blocked, the state indicating lamp 2 controls the attraction of the electronic relay 1 and the conduction of the MOS switch tube 3 only when the control circuit 4 receives a state input signal to allow the connection, so that the state indicating lamp circuit is conducted, and the state indicating lamp 2 works at the moment. When the status indicator lamp 2 does not work, the control circuit 4 controls the electronic relay 1 to be switched off; under the condition of disconnection, the energy of the interference signal is not enough to close the electronic relay 1, and the anti-interference performance of the control circuit 4 is far greater than the anti-infection performance of the status indicator lamp 2, so that the status indicator lamp 2 is stable in working state under the condition of electromagnetic interference.
The resistance range of the resistor R1 is 10 omega-10 k omega, the resistance range of the resistor R2 is 10 omega-10 k omega, the circulating current range of the electronic relay 1 is 10 mA-10A, the MOS switch tube 3 is a single-pole control MOS tube, and the status indicator lamp 2 is an LED lamp or a resistance indicator lamp. The user can set the parameters of each part according to the actual requirement, thereby setting the anti-electromagnetic interference capability of the circuit of the utility model.
Claims (6)
1. The anti-electromagnetic interference state indicating lamp circuit is characterized in that: including connecting resistance R1 between working power supply and earthing terminal in order, electronic relay (1), status indicator lamp (2), resistance R2, MOS switch tube (3), electronic relay (1) control end, MOS switch tube (3) control end is connected respectively and is had good grounds status input signal control electronic relay (1), thereby MOS switch tube (3) break-make makes control circuit (4) of status indicator lamp (2) switch simultaneously, control circuit (4) power input end is connected with 5V DC power supply.
2. A circuit for an anti-electromagnetic interference status indicator light, according to claim 1, wherein: the resistance value of the resistor R1 ranges from 10 omega to 10k omega.
3. A circuit for an anti-electromagnetic interference status indicator light, according to claim 1, wherein: the resistance value of the resistor R2 ranges from 10 omega to 10k omega.
4. A circuit for an anti-electromagnetic interference status indicator light, according to claim 1, wherein: the flowing current range of the electronic relay (1) is 10 mA-10A.
5. A circuit for an anti-electromagnetic interference status indicator light, according to claim 1, wherein: the MOS switch tube (3) is a unipolar control MOS tube.
6. A circuit for an anti-electromagnetic interference status indicator light, according to claim 1, wherein: the status indicator lamp (2) is an LED lamp or a resistance indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120487437.8U CN215682690U (en) | 2021-03-08 | 2021-03-08 | Anti-electromagnetic interference state indicating lamp circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120487437.8U CN215682690U (en) | 2021-03-08 | 2021-03-08 | Anti-electromagnetic interference state indicating lamp circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215682690U true CN215682690U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120487437.8U Active CN215682690U (en) | 2021-03-08 | 2021-03-08 | Anti-electromagnetic interference state indicating lamp circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215682690U (en) |
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2021
- 2021-03-08 CN CN202120487437.8U patent/CN215682690U/en active Active
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