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  1. V

    Best cheap material for diy low power heating element

    So this is the sort of thing I wanted to make (but spread out over a slightly larger area) but I'll just buy one, it's not worth the trouble trying to try to make. Definitely not this
  2. V

    Best cheap material for diy low power heating element

    It's ok it all sounds too risky and involved now, I just wanted a simply project without dangers or complex equations to solve, one I could test as I went along and work it out as I go more as a learning experience starting with very low power multimetre and aa testing. I did read a beginner...
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    Best cheap material for diy low power heating element

    Ok thanks. Perhaps I did not read the whole page before I posted a quick reply to that post but I would have have read more later before buying anything and of course tested anything I got with a multimetre then testing it by briefly connecting an a AA battery with a temperature probe I have...
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    Combining red leds with very low powered 850nm - 880nm leds with eye safety in mind?

    Don't worry after I turn it off I'll come back on the forum to start a new thread about how long it takes light bulbs to cool down, before thinking about touching it. :)
  5. V

    Combining red leds with very low powered 850nm - 880nm leds with eye safety in mind?

    I know it can be dangerous I was just hoping for a simple guide to using a few super low powered remote control leds spread out across more than a metre with other visible leds. Something that everyone would agree would be safe. I wanted some help working out the safety guidelines within big...
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    Best cheap material for diy low power heating element

    Ok thanks. Oh plug pack means a low voltage output power wall connected power supply not battery pack ie. 12v 500mA, but they are about the same voltage as battery packs. I thought of using wire with enough in series or parallel to get enough heat dissipation so it wouldn't have to get that...
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    Best cheap material for diy low power heating element

    Thanks for your answers, very helpful. :) It's definitely looking like nichrome wire is not suited at all to my projects. I definitely don't want 500 degree wire. I'll look at peltier modules, or ceramic resistors glued with thermal glue to a surface, what surface would be best? I'll probably...
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    Combining red leds with very low powered 850nm - 880nm leds with eye safety in mind?

    I just simply wanted some help working out distance and power for safety with low powered ir leds in various different spaced out configurations combined with visible light which I thought was quite a complex problem to work out, not simple to work out at all. I posted one other thread on this...
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    Combining red leds with very low powered 850nm - 880nm leds with eye safety in mind?

    Considering the danger with ir leds by themselves is that you can be looking at a bright light and not know it (while it is damaging your eyes all the same), would it be safe to combine low powered (eg. 3mm 20mA 2v) ir (850nm - 880nm) leds next to slightly higher powered (eg. 5mm 60mA) red leds...
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    Best cheap material for diy low power heating element

    Thanks. I had a few projects in mind (foot warmer, heating a bowl of water to about 30 degrees c, maybe seat back warmer). All with low power 12v plug packs. Also I want to try making a concrete heat rock with a diy element inside. The nichrome wire sounds like a good option, I guess I can...
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    Best cheap material for diy low power heating element

    I want to make a low voltage low power heat element, what would be a good material to use? I was thinking of something like aluminium foil but a bit thicker and able to be soldered. I want to make a track on a flat surface to make about 6 ohms for my first project.
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    Running incandescent or halogen bulb with 2/3 or lower voltage possible?

    Ok thanks
  13. V

    Expected wavelength output of ceramic coated heat lamp?

    I can't find information on this type of heat lamp about their ir spectrum wavelength output. I assume it is mid or far infrared, but does anyone have a rough idea of the wavelength spectrum range in nanometres? This sort of thing
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    Running incandescent or halogen bulb with 2/3 or lower voltage possible?

    Ok thanks. I just wondered if it was glowing red + 80% infrared whether that could be bad. When during normal use (white) the infrared addition is a much much lower percentage as per the graph (ie. the white light + 10% infrared). I mean if I used several lamps running at a lower temperature...
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    Running incandescent or halogen bulb with 2/3 or lower voltage possible?

    Thanks, you are right, however if I lowered it too much that it no longer produced much light your eyes wouldn't know if you are looking at higher than expected output including the ir. So I hope it works well glowing red because I wouldn't want to go any lower.
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    Running incandescent or halogen bulb with 2/3 or lower voltage possible?

    Thanks, I'll try that when the halogen light I ordered arrive in a few weeks. Yes I read about mirrors and the non heat reflective properties of standard mirrors. It will be difficult to make a reflector though, would plain aluminium foil be much too thin to work?
  17. V

    Running incandescent or halogen bulb with 2/3 or lower voltage possible?

    Thanks, how much would you expect I should lower the voltage by? But if I lower it too much could I be in the region of eye danger, Ie. invisible infrared that can still damage your eye? I was hoping to just lower it until it glowed red like a heat lamp. I only want it as a very low powered...
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    Running incandescent or halogen bulb with 2/3 or lower voltage possible?

    Thanks, I guess I shouldn't have ordered those halogen bulbs, oh well they were very cheap. It's hard to get incandescent bulbs here, shops can't sell them anymore except for a few specialty ones such as oven lights (which I am using for my salt lamp). I just want to create a low powered heat...
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    Running incandescent or halogen bulb with 2/3 or lower voltage possible?

    Thanks So what will happen, will it just not last as long (ie. last about the same time as a non halogen bulb) or will it break very quickly? I ordered some cheap 12v halogen bulbs but maybe I needed standard incandescent ones.
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    Running incandescent or halogen bulb with 2/3 or lower voltage possible?

    Ok thanks, so there's nothing that would stop the re coating reaction from working the same if I turned it down so much that it was red instead of white.
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