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Answer: Induce electricity.
It cannot be eliminated for the time being, but there are several ways to reduce or absorb some of it.
At both ends of the relay coil, a diode is connected in parallel in reverse direction.
It can absorb induced electricity of about 8V. This method cannot induce electricity, but it can absorb most of it.
Connect a 1k resistor in parallel at both ends of the relay coil.
Ground the 0V of the switching power supply.
Check the control circuitry to avoid possible side-by-side routing with high-voltage cables.
Do a good job of grounding. and capacitance of about 1uf.
Introduction: Induced electricity is the electricity carried by the outside of a conductive device. Generally speaking, there is no harm to the human body. Induced electricity has a greater impact on more sensitive electronic devices, such as pacemakers.
Therefore, people equipped with such instruments must pay attention.
Explanation: Induced electricity is electricity that is commonly found on the outside of conductive devices. The essence of induced electricity is to change the distribution of electrostatic charges in space by certain methods, the biggest example of which is the introduction of a metal into an electric field (because the metal contains free electrons.
Due to the action of the external electric field, the free electron motion that was originally thermally moved will have a tendency, and finally reach a new equilibrium state (of course, this equilibrium state is related to the external electric field), and the free electrons in the metal will be evenly distributed from the original.
It becomes unevenly distributed. So from the outside it seems that an electric charge is generated, but a positive charge is generated.
And the negative charge is always the same because the charge is conserved. In general, there must be switching power supplies and filters in the control system, and they all have Y capacitors in them.
That is, a 220V to ground (enclosure) capacitor, if your system is not grounded, then the enclosure will have 110V AC voltage.
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I've also encountered strong induction electricity, and it's no problem to do a good job of grounding! When I make machines now, I require the electrician to do a good job of grounding, so that both the safety and the operation of the machine will be much more assured!
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I'm working on this as well. There is no ** way to do it at the moment. If it is a DC relay, several methods have a certain effect.
1. At both ends of the relay coil, a diode is connected in parallel (positive connection will be short-circuited), which can absorb about 8V induced electricity. This method cannot induce electricity, but it can absorb most of it.
2. Connect a 1k resistor in parallel at both ends of the relay coil.
3. Ground the 0V of the switching power supply.
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There must be a switching power supply and a filter in the system? They all have a Y capacitor in them, which is a 220V capacitor to ground (case), and if your system is not grounded, then the case will have 110V AC, which is not surprising.
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Put a capacitor of about 1UF on the coil of your indicator light, and you're good to go!
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The control loop of the soft starter, the control loop looks fine.
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The most reliable way to eliminate induction electricity is to use three-prong power plugs and sockets with grounding wires instead, and to install the ground wires properly.
The essence of induced electricity is to change the distribution of electrostatic charges in space by certain methods, the biggest example of which is the introduction of a metal into an electric field (because the metal contains free electrons.
Due to the action of the external electric field, the free electron movement that originally did thermal motion will have a tendency, and finally reach a new equilibrium state (of course, this equilibrium state is related to the external electric field), and the free electrons in the metal will change from the original uniform distribution to non-uniform distribution. So from the outside it seems that a charge excitation is generated, but the positive and negative charges produced are always the same because the charges are conserved.
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Hello dear, the method of inductive electricity treatment is to eliminate induced electricity, you must first know what induced electricity is. Faraday discovered an electromagnetic induction phenomenon in 1831 and is considered by the world to be the originator of electromagnetic induction. The phenomenon of electromagnetic induction refers to a conductor placed in a changing magnetic flux that generates an electromotive force.
This electromotive force is called induced electromotive force or induced electromotive force, if the conductor is closed into a loop, the electromotive force will drive the flow of electrons, forming an induced current (induced current) The most effective way to eliminate the induced electricity is to find out the power source that produces the induced electricity from the source, and avoid mixing the power supply and the control line together and laying them in parallel (especially the wire to minimize the joint or handle the joint well). If the induced electromotive force is not particularly severe, the induced end is reliably grounded or a leakage circuit breaker is installed in the line.
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Hello, the sensor light is based on the human body red liquid sock outer line sensor work, if you want to cancel the induction, you can follow the steps below:1Manual control:
Some sensor lights will have a manual control switch on it, which can be switched to the manual state, so that the sensor light will no longer sense the infrared signal of the human body. 2.Adjust position or angle:
If there is a problem with the installation position or angle of the sensor light, it may trigger the sensor by mistake, so you can adjust the position or alarm angle of the sensor light so that it will not be triggered by mistake. 3.Power off:
If you don't want the sensor lamp to work or the sensor lamp works too often, you can directly turn off its power.
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Summary. Hello, induced electricity cannot be eliminated for the time being.
How to eliminate induced electricity?
Hello, induced electricity cannot be eliminated for the time being.
The ceiling lamps in the house are all dimly lit.
Hello, 1, the zero line is electrified This is the most common situation, because the plumber is in the wire when the wire is directly into the lamp base, and the zero line into the control switch. This causes the switch to be disconnected, but there is still a current passing through the light to reach the switch, which causes the light to be slightly bright. Workaround:
In this case, adjust the wiring so that the switch controls the live wire. The switch controls the zero line, causing the current to flow through the lamp Because the plumber is connected to the wrong line when the main gate enters the line, the fire zero line is reversed, which accidentally reverses all the fire zero lines, causing all the switches to control the zero line. Workaround for this situation:
All you need to do is swap the incoming wires. The switch correctly controls the live wire If the switch controls the live wire, the traditional mechanical wall switch is used, or the light is emitted, the neutral wire is electrified. It is a very common phenomenon that the neutral line is electrified.
If the neutral line is not well grounded, the transformer three-phase load is unbalanced, the line is too long, the wire diameter is thin, or the neutral line current is too large, it will cause the neutral line to be electrified. Solution: Re-grounding the neutral line or carrying out low-voltage renovation (this needs to be conveniently solved by the property through the electricity supply company).
2. There is a wiring error error in the double control switch, although there are several wiring methods that can also be used in the double control switch, if the wrong connection is used, the traditional incandescent lamp will not be lit, but for the LED lamp, because it is actually direct current, it will be slightly bright after turning off the light. The solution to this situation is to install the normal control live wire connection and rewire.
Correct connection, any switch can cut off the wiring method of the power supply dual control switch: single and double control switch, there are three contacts behind it, which are L, L1, L2. The two L1 and L2 are connected first, the live wire is connected to the L contact point of one dual control switch, and the neutral wire is connected to the L contact of the other dual control switch.
3. The switch has an indicator light, and the electronic and touch switch switches have an indicator light, and there will be a slight current flow after the light is turned off. Electronic touch switches If the lamps use electronic touch switches, such as infrared, voice control, remote control switches. There will also be a shimmering glow when the lights are turned off.
Workaround in this case: Change the switch. Parallel 500k resistors at the inlet part of the lamp.
However, this method is measured and installed by professional technicians, and it is best not to operate casually by non-professionals. And this method is ineffective for the zero line charged, or the glimmer caused by the leakage of the patch. LED strip light 4, non-isolated driver, light source patch and substrate leakageMany lamps and lanterns are driven by inferior resistance and capacitance step-down due to cost considerations, or the quality of the light source patch is poor, and there is leakage of patch and substrate.
Substrate copper clad and substrate capacitance effects can also cause light leakage. That's why in a room, the lights are on and off. Workaround:
Change the light fixtures. It's longer, see for yourself.
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