Category Archives: electricity

Learn the basics and important rules of home security to keep your home safe.

How to choose a power supply! The old one broke down – can I buy a stronger one? Then it will surely last longer – or not?

What does stronger mean? – Stronger would mean that it can handle a higher output power.
Okay, but what parameters are we considering?
And it’s crucial whether our consumer requires current-regulated or voltage-regulated power supply.

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LED strip room lighting – fantasy

Continue reading How to choose a power supply! The old one broke down – can I buy a stronger one? Then it will surely last longer – or not?

The current and voltage generator power supply modes represent two different approaches to power sources.

The title requires immediate explanation since the term “voltage generator” is not commonly used. However, the term “current generator power supply” is accepted, and in the comparison of the two (in this context), perhaps the term “voltage generator” is more appropriate. By “voltage generator power supply,” we mean a constant voltage or voltage-regulated stabilized power supply.

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LED light fantasy drawing

It is important to compare these two fundamentally different power supply modes because more and more LED lamps are being marketed with replaceable power supplies, meaning they operate with a current generator power supply separate from the lamp. When these fail, users who have never heard of current generator power supplies understandably have completely erroneous ideas about what kind of power supply to buy for their LED if the factory power supply is not available separately.

Continue reading The current and voltage generator power supply modes represent two different approaches to power sources.

The impact of incorrectly selecting current-driven power supplies on LED lamps and the power supply

This article details our potential mistakes. Many users are not even aware that their light source is driven by a current generator, and if it fails, they tend to treat it as if it were a voltage-regulated power supply. Without knowing that a current-driven LED has much more limited options when it comes to replacing the power supply. Therefore, the issue is not that the user is unaware of the current-driven nature of their light source, but that in case of failure, they treat it as if it were a fixed voltage power supply.

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LED fantasy lights drawing

For them, I have compiled the possible scenarios when they might want to deviate from the factory-designed drive parameters, to understand the consequences in advance.
Continue reading The impact of incorrectly selecting current-driven power supplies on LED lamps and the power supply

How do LEDs work? What is nonlinear voltage-current characteristic, forward voltage, and saturation region?

The nonlinear voltage-current characteristic of LEDs has been mentioned in several articles, so it is worth learning more about what it actually entails.

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LED light fantasy drawing

LEDs are also diodes, but they are light-emitting diodes widely used in lighting and displays. The nonlinear voltage-current characteristic is a typical property of diodes, which means that for diodes, including LEDs, their current consumption does not change in direct proportion to the applied voltage. At low voltages, only a small current flows through them, and above a certain forward voltage, the current suddenly increases. With further increases in voltage, the saturation region is reached. In this region, further increases in voltage only minimally increase the current. The saturation region of an LED depends on the manufacturing technology and the type of LED, but it is generally within a few tenths of a volt above the forward voltage. In this region, the efficiency of the LED decreases, and further voltage increases do not result in a significant increase in brightness.

Continue reading How do LEDs work? What is nonlinear voltage-current characteristic, forward voltage, and saturation region?

When artificial intelligence accidentally invents an LED-lit carpet, the brainstorming on how to create it begins.

Through Copilot, I usually generate images related to interior design with Dall-E. I never would have thought to request designs for carpets combined or integrated with LED strips or optical cables.

Initially, I received this image of a carpet with edge lighting because we were discussing LED strip lighting.

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LED edge-lit carpet under a double bed – fantasy

I know there are light-up shoes and clothes with sewn-in LED strip lights. And of course, our web store also has walkable aluminum profiles to embed LED lighting in the floor.

The idea of integrating lighting into the carpet is not impossible, but I haven’t seen it yet. I asked where the idea came from. Well, they hadn’t seen it either, and in their response, they actually praised themselves. Here it is:

Indeed, an edge-lit carpet could be an exciting and creative idea in modern interior design. Although I haven’t come across it yet, who knows, maybe it could become a reality in the future!

We then discussed how to bring the idea to life. They got so into it that they created more images without me asking. I won’t show them all because some of the designs are quite over the top. The screen can handle a lot, but I’d rather skip the impossible visuals.

Some people talk to their cats, and some talk to AI. 🙂

Continue reading When artificial intelligence accidentally invents an LED-lit carpet, the brainstorming on how to create it begins.

Power consumption and luminous flux analysis of adjustable color temperature, or CCT LED strips with different wiring methods

24 Volt LED strips are increasingly replacing 12 Volt ones. Many have experienced their benefits with both single-color and RGB LED strips. The most important advantage is that with the same cross-section, double the power can be transmitted, allowing for generally half the number of connection points during installation. This facilitates the installation process, meaning that noticeable luminous flux reduction occurs further from the connection points. Many manufacturers already offer 10-meter rolls instead of the usual 5-meter rolls for 24 Volt versions.

Of course, this is not always true, as the power per meter and the construction of the strip also affect this.

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Just Dall-E fantasy – for illustration purposes

A reasonable question arises: what about CCT, or color temperature-adjustable LED strips? Is it enough to connect these 10-meter sections at both ends?

We will also examine how to interpret the nominal consumption of LED strips, as when a controller mixes colors, or in this case the color temperature, manufacturers consider that during mixing, fluctuations in luminous flux are eliminated. Thus, it can be assumed that a mixed color or color temperature will not light up with twice the power as if only one color channel were used. Therefore, we cannot assume that using a multi-color LED strip through a controller will reach nominal consumption.

Continue reading Power consumption and luminous flux analysis of adjustable color temperature, or CCT LED strips with different wiring methods

Comparison of the light performance and consumption of 12 Volt and 24 Volt white light LED strips at different power connection densities

It is common to install an LED strip on a cornice running around the ceiling of a room to achieve a diffused ceiling lighting effect. This not only looks beautiful but also provides a discreet base lighting for the room, which can be made exclusive with additional accent lighting.

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Ceiling, wall, and furniture ambient lighting made from white LED strips

Those who have switched from the previously used 12 Volt strips to 24 Volt ones have already experienced the advantage, especially if they have created longer, larger systems. The fact is, with LED strips of the same performance and cross-section, the 24 Volt ones allow for nearly twice the distance between connection points while maintaining almost the same light experience when examining the lighting further from the power source. Thus, installing longer systems becomes simpler with 24 Volt LED strips.

Let’s examine this with specific strip measurements to discuss more than just theory!

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The above graph shows the changes in light performance of a 30-meter 12 Volt and a 24 Volt Pannon LED strip at different power connection densities. If you find the graph too complicated, read on as we break down the topic in detail for easier understanding.

Continue reading Comparison of the light performance and consumption of 12 Volt and 24 Volt white light LED strips at different power connection densities

Which DRGB LED strip has what power consumption?

The actual power consumption of a DRGB LED strip depends on several factors.

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These include:

  • Manufacturers provide nominal power consumption values for LED strips, but they never specify under what power connection density these values are true.
  • We buy Digital RGB LED strips to have different colors run along them. However, our lighting needs to be designed with the maximum possible consumption in mind, which logically can only be achieved with fixed white light – but only logically.
  • Some DRGB controllers manipulate the lights. Certain manufacturers’ DRGB controllers light up weaker in fixed white light mode compared to any colored flashing effect mode.

Let’s look at it in detail:

Continue reading Which DRGB LED strip has what power consumption?

V-TAC 60LED/meter – 24 Volt RGB LED strip measurement data between 1-15 meters, powered from one end

Customer Request:

Since I have already received the measurement data for the Pannon 30 LEDs per meter 24 Volt RGB strip per meter, could I get the same for the V-TAC 60 LEDs per meter 24 Volt strip in a per meter breakdown?

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I’ve done it! Not just up to 10 meters, but up to 15 meters, which is understandable as 30 meters with both-end connections.

Continue reading V-TAC 60LED/meter – 24 Volt RGB LED strip measurement data between 1-15 meters, powered from one end

When comparing 24 Volt RGB LED strips, the V-TAC performed well even at 10 meters, but it would also be good to know what the Pannon 30 LEDs per meter would produce over 10 meters!

Question regarding the Pannon 30 LED per meter 24 Volt RGB LED strip:

On the following page: HERE the 24 Volt RGB LED strips were compared to show how much better they are compared to the 12 Volt ones. I understand that because the rolls are 5 meters long, the performance of 5 meter lengths were compared, and since the V-TAC roll is 10 meters long, its values ​​for 10 meters were also shown. I also understand that this V-TAC strip has been adequately praised for how good it is, with 60 LEDs per meter and only 40% of the light at the end of 10 meters, but I’m curious about the 10-meter performance of two Pannon LED strips (30 LEDs/meter) that I solder together, as I feel that the decrease in light would be even smaller. And Pannon is still expected to be of higher quality because it is double-layered PCB and at such a great length many people may not mind that there are only half as many LEDs. After all, consumption is theoretically the same order of magnitude, so luminous flux is similar.

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So I would like to know what the Pannon 30 LED/meter 24 Volt RGB LED strip produces over 10 meters, because I think it would win.

Continue reading When comparing 24 Volt RGB LED strips, the V-TAC performed well even at 10 meters, but it would also be good to know what the Pannon 30 LEDs per meter would produce over 10 meters!

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