LED灯是令人惊叹的现代照明解决方案。与其他选择（白炽灯和荧光灯）相比，它们消耗的能量降低了90％，并具有长期工作寿命的亮度。但是，一些用户最近报告了由LED引起的问题。
一个这样的问题是广播或电视干扰。一些用户声称，升级汽车LED后，他们面临着骚扰AM / FM无线电信号。这在某种程度上破坏了经历。如果您面临类似的问题并想要解决方案，请继续阅读。
什么是无线电干扰？
Radio signals travel through the air. Whenever you turn your radio on, your car’s antenna picks-up the radio signals and you hear a sound. It’s the reason, in some cases, you might hear those humming or buzzing sounds while your radio is on. And this humming or buzzing sound is what you can call radio interference.
Radio signals use Radio Frequency, which is usually transmitted between100kHz-300GHz。如果有电子设备near your radio that uses the same frequency range, a disturbance can be caused. Most of the time, you’ll hear a buzzing sound / noise, but it’s inaudible sometimes.
为什么LED灯会引起无线电干扰？
大多数时候，您的汽车中的LED是罪魁祸首。但这不是全部。周围可用的其他灯也可能导致干扰。最近生产的汽车带有许多LED，从主大灯，门灯，头顶灯到照明条形和聚光灯。
一个令人震惊的事实是,led在家里also affect the wireless signal, causing radio interference. LED lights are not the main source that causes the problem. It is the device that powers the LED, which causes the disturbance. The power supply of the LED is often called as LED Driver (or sometimes, but rarely, a Ballast).
LEDs work because of a series of controlled bursts of power called Pulse Width Modulation or PWM, which is handled through its duty cycle. The Power to an LED is delivered from a ballast / LED Driver in the form of a series of Pulses, whose frequency will decide how many times the LED will flicker per second.
在此闪烁控制过程中，HZ比率将转换为电信号，您的汽车无线电或其他无线电设备将进一步接收。
当这种情况发生时，您会听到收音机扬声器的声音。引起这种干扰的另一个流行原因是在像变压器这样的电源中使用低质量的电子产品。
引起干扰的另一个问题是嵌入式照明。当您同时使用收音机和嵌入式灯时，此问题就会发挥作用。现在，让我们迈向解决这些问题的解决方案。
LED灯无线电干扰解决方案 - 如何修复？
在转到解决方案之前，您需要找到引起问题的元素。为此，您需要传感设备。低技术便携式AM收音机将完成这项工作。它很容易获得，也很便宜。但是，请确保它具有新的电池和不错的音量控制。
Once you’re set, you need to find a station on the lower end of the AM dial. Tune it in such a way that you hear nothing and there’s no static. Now, this will act as a stud finder for you. Now you need to wave it all over the devices that use LED lights.
在挥舞AM收音机时，如果您听到一些嗡嗡声，繁荣，您会发现自己的罪魁祸首。现在，您已经找到了问题的根源，可以更换变压器，灯泡或压载器。灯泡可以易于更换，但是您需要一个专业的内部零件，例如变压器。他会帮助您找到零件，这是错误的，并导致了问题。
干扰汽车的解决方案
First, you need to troubleshoot the problem. And for this, you need to cover all the LED lights which are connected. Examples being brake lights, fog lights, panel lights, and headlights.
如果您在汽车中发现罪魁祸首，那么更换内部零件可能不是一个不错的选择。您要么需要用新的高质量的LED替换有故障的LED，要么需要使用铁氧体核心夹。这样的夹子是特殊的过滤器，可有效地针对电子无线电干扰。
可能的解决方案列表
- 在安装最优质的LED灯泡的新车型中，您可能不会面对这个问题。而且，如果您有旧车或具有低质量的LED灯泡，则应用优质的LED灯泡代替它们。有著名的品牌，例如飞利浦，Osram，它们销售兼容的灯泡，可以最大程度地减少您的问题。
- 您可以做的另一件事是在为LED供电的设备中安装高质量的内部零件。在这里，我们谈论的是变压器。您应该找到一个提供更好抑制EMI的变压器。同样，您应该从一个知名的品牌购买。
- You should use wires of short length to prevent any disturbance. You can also use a shielded cable as it is considered as a very effective solution.
- 您可以在变压器的输出或输入处使用EMI过滤器。这些过滤器也被称为铁氧体窒息或铁氧体珠。
经常问的问题
ANS：不幸的是，是的。尽管LED灯的运行频率比Wi-Fi信号（以2.4GHz - 5GHz之间的频率运行）更高，但Wi-Fi路由器 /设备仍可以拦截LED的一些噪音。
ANS：Radio interference from LEDs affects both these signals. However, AM radio is more susceptible as compared to FM. It’s because AM uses shorter signal transmission while FM uses a stronger signal.
ANS：Yes, they can. And the solution is fairly simple. Once you find the culprit, in this case the cables which carry signals, you can install ferrite core filters to them. These filters will shield your TV cables that’ll significantly reduce the disturbance.
ANS：Yes. And it’s the most common reason behind the problem of interference. In such cases, you’ll have to purchase a good-quality LED bulb.
结论
In a nutshell, LEDs can significantly ruin your experience whether you’re in your home or your car. It can cause a buzzing/humming sound, which is not pleasing. However, the most common reason behind this is poor-quality parts, which can be replaced all the time.
最难的部分是故障排除。但是您可以使用AM仪表轻松处理。然后，您可以调整设置，找到真正的罪魁祸首，然后向解决方案移动。
