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  1. T

    using a resistor

    Wow, interesting these 1206 resistors that can take the power, let me crystalyse my battery and led config and will ask you for the correct size. Thanks
  2. T

    using a resistor

    Thanks for your comprehensive explanation, I do not have such detailed idea, even the 2h runtime is a simple quotation, but from your answer I gathered the following matters: 1 - A driver will keep a more consistent brightness output, but may stop working abruptly at the end (as it buck and...
  3. T

    Looking for special glue

    No, there is no pressurised can in Singapore REF NOS : 1350609/Q/CL Thank you for your inquiry. Please find our quote below. 1. LOCTITE 598 BLACK HIGH PERFORMANCE SILICONE GASKET MAKER - 300ML, P/N:25752 …… @S$40.00/btl (not spray type) This is what I got after having specified SPRAY...
  4. T

    using a resistor

    Thanks HarryN for your reply, I am sure that it works fine but is it efficient? Let me put it another way, if I adjusted it so that I have the same brightness (say on half maximum) on 2 identical torches but one using a driver board and one using a resistor, which one will draw more mA...
  5. T

    using a resistor

    If all I want is some alternative dimming position and the led is directly driven, then would it be efficient to use resistor to achieve the dimmed light? i.e. would it waste some battery power in heating the resistor and that a driver board will be more efficient? What more is it really that...
  6. T

    Looking for special glue

    Wow, thank you for the information, I will look for it today.
  7. T

    Is there a continously variable driver board?

    I don't like the type of "click to change" set up, some time you want just to switch off but have to click twice etc. but I do need a variable output, not just fixed type. Is there a type that is controlled by a rotary knob? Like a radio volume, when you first turn on in is low then go...
  8. T

    How to bore out the battery tube?

    I have a torch that I like very much, trouble is it take only 2xCR123 and it has a very close fit. I want to use 18650 battery in it and need to open up the barrel the 1 mm or so but I don't want to go to a machine shop for that, the charge they make will probably be almost as much as buying a...
  9. T

    Looking for special glue

    I don't know how the RTV pressurised can work, remember that I need to apply very precisely around a small diameter device, don't want any overspary here, beside I don't think I can find this in Singapore, they don't service car themselves and usually go to the service centre for that. Multi...
  10. T

    Looking for special glue

    Thanks, the idea of silicone sealant applied from a syringe sounds good. Will try, it's not as if I am working on a US$100 torch here :-) so it shouldn't matter if I experiment a bit
  11. T

    Looking for special glue

    I have sourced a very cheap host torch which uses 3AAA but which I can easily convert to accepting 18650, I wanted to use 18650 since I have an ample supply of this type of cell. The torch only cost about US$5 but has a reasonnably good LED and reflector. it has poor quality O rings which can...
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