All Questions
Tagged with light power-supply
12 questions
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Is Power Factor only relevant at rated load in Light Equipment?
As you might know, LED lamps over 25W require a minimum 0.9 power factor in Europe.
I have designed a PSU for a specific LED lamp which is rated about 50W. There is a PFC-stage (crm) in order to ...
- 11
1
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976
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How to connect a LED G13 Tube directly to a power socket?
I am trying to build my own cheap lighting for my greenhouse. I have found a couple LED tubes that would be perfect for the task, only they are supposed to be mounted on a lamp of some sort. They have ...
- 11
0
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233
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LED strip in series
I am planning to order LED strips, I need to connect 6 x 5m LED strips in parallel so that they can be controlled via single controller, but am not sure if the controller will be able to handle the ...
- 273
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2
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1k
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Connecting 220V mains switches (with on-indicator lights) to 12V COB LED lights in series
I wil be switching COB Led lights (each one rated at 12V, 200mA) individually with these switches.
One end of each of the 60 COB LED lights is connected to 12V, the other end to 60 of these 220V ...
- 515
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151
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Instead of a battery, can I connect this light to a DC power supply?
I bought this LED video light recently, which to my surprise doesn't have a DC power / wall wart input to connect it to mains power. Instead, you're required to use a 7.4V Sony 970 series camera ...
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1k
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Constant DC 12V, 2A from USB 3.0, SATA, Molex or other common PSU cable?
I'm in the process of trying to power a simple LED strip lights, spec 12V, 2A, through a PC rather than transformer. So far, I am debating the first stage.
After looking into USB 3.0, it can supply ...
- 103
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2
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526
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Turn a METAL HALIDE BULB On/Off in 1 minute Intervals?
OK, let me 1st give you some background information.
I need to generate 40,000 lux of light in an indoor environment (in a area of around 5 feet by 3 feet) and I need the ability to turn the light on/...
- 86
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395
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How to Generate Light in the 10,000K Spectrum?
I need to generate a lot of light with the same spectrum as the sun - 10,000 Kelvin (10000K). I have searched around for hours, however all full spectrum lights available are either 5500K or 6500K - ...
- 71
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526
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SMD LED Perimeter Lighting with PWM for Dimming on each colour
simulate this circuit – Schematic created using CircuitLab
So from the start what Im trying to achieve is drive way lighting in which each colour is separately dimmable with a pulse width ...
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586
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Using Arduino Uno R3 + Ethernet Module, how to control current pass to Lamps?
I have Arduino Uno R3 and Arduino Ethernet Shield V5.
What's missing in order to control 6+ lights (bulbs) from my home? Those are connected to 220V AC.
My idea is to send a packet via ethernet that ...
- 149
2
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2
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491
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Correct EL Driver Rating for 8 Channel Sequencer
I'm trying to use an 8 channel EL sequencer (found here) to control eight 10-foot segments of EL wire. I'm having trouble figuring out what the appropriate length rating is that I need on an inverter....
- 641
3
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3
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667
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How do I build a cheap/efficient mains adapter for some LED lighting?
I've been considering building some LED lights to replace the mains-supplied lights in my house (as a more efficient alternative). For it to be worthwhile though I'd need to build an efficient UK ...
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