At Downlights.co.uk, we understand the frustration of dealing with flickering LED lights. Luckily, advancements in technology have minimized this issue considerably. To help you put an end to LED flickering or strobing, we have compiled our top five tips.
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1. Ensure LEDs are Dimmable
Not all LEDs are dimmable, so it's essential to double-check before purchasing. In the past, dimmable LEDs came with a higher price tag, making them less accessible. However, reputable brands like Philips now offer affordable dimmable options. Confirm that the LEDs you've chosen have dimmable capabilities to avoid any flickering problems.
2. Check Your Dimmer Switch Compatibility
Using an old, incompatible dimmer switch with LEDs often results in flickering. Traditional inductive dimmers are notorious for this issue. To resolve it, consider investing in modern LED-compatible dimmer switches. The Varilight V-Pro, for example, is programmable, allowing you to fine-tune the dimming settings based on the LED load on each circuit. By switching to a compatible dimmer switch, you can eliminate flickering.
3. Meet the Minimum Load Requirement
Most dimmer switches have a minimum load requirement, usually around 40 watts. If this requirement is not met, flickering may occur, particularly at lower dimming levels. There are two solutions to this problem. Firstly, you can use a resistive load to fool the dimmer switch into thinking there is enough load on the circuit. Alternatively, you can opt for an LED-specific dimmer switch, like the Varilight V-Pro, which has a lower minimum load requirement, or explore options like the Danlers RESLOADE for home automation systems.
4. Consider Maximum Quantity of LEDs per Switch
While the Varilight V-Pro is an excellent LED dimmer switch, it has limitations on the number of LEDs it can handle per switch. The standard V-Pro can dim a range of 1-10 LEDs, making it suitable for most rooms. However, if you need to dim more than that, Varilight offers high-output versions capable of dimming up to 30 LEDs. Remember not to exceed the switch's maximum wattage, which is usually 120W.
5. Ensure Compatibility Between Dimmer Switch and LED
The compatibility of dimmer switches and LEDs is not necessarily guaranteed, even when using the same product code from the same manufacturer. It's essential to ensure compatibility between these two components to avoid flickering issues. Additionally, keep in mind that dimmer switches with wattage ratings of 250W or 400W are intended for incandescent bulbs and need to be de-rated for LED use. Automated lighting systems such as Lutron, Rako, or Crestron might require over-rating calculations to account for current spikes.
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Buzzing LEDs
Buzzing noises can also be associated with LED lighting, often caused by incompatibility between components like dimmer switches, LED drivers, and bulbs. While modern dimmer switches and control systems are designed to work seamlessly with LEDs, older leading-edge dimmers may produce buzzing sounds due to small coils. Consider installing a lighting filter to minimize buzzing and ensure compatibility between all components.
It's worth mentioning that various scientific factors can contribute to LED flickering. While understanding these may not solve your specific issue, you can explore Lutron's comprehensive 'Controlling LEDs' white paper for more information. Feel free to contact us at 01706 868343 for any further inquiries, but please note that we don't offer advice on cheap, unbranded LEDs as we don't sell or test them.
Frequently Asked Questions (FAQ)
Q: How can I prevent LEDs from flickering?
A: To prevent LED flickering, make sure you're using dimmable LEDs, compatible dimmer switches, and meeting the minimum load requirements. Additionally, consider the maximum quantity of LEDs per switch and ensure compatibility between the dimmer switch and LED.
Q: Why do LEDs flicker when dimmed?
A: LED flickering when dimmed can occur due to various factors such as incompatible dimmer switches, insufficient load requirements, or using non-dimmable LEDs.
Q: Can buzzing noises be eliminated in LED lighting?
A: Buzzing noises in LED lighting can be minimized by ensuring compatibility between components, such as dimmer switches, LED drivers, and bulbs. Installing a lighting filter can also help reduce buzzing.
Q: Are all dimmer switches suitable for LED lighting?
A: Not all dimmer switches are suitable for LED lighting. It's crucial to use LED-compatible dimmer switches to ensure proper operation and prevent issues like flickering or buzzing.
Q: Do you offer advice on unbranded LEDs?
A: We don't offer advice on cheap, unbranded LEDs as we prioritize high-quality, tested brands like Philips and Aurora. For reliable LED solutions, we recommend sticking to reputable lighting brands.
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