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    Current and lights and things OH MY!!

    As promised Pics of the "Church in the Rocks" or "Kirchenstein", in German As she sits high on the shelf. Has been gathering dust since 2022. You can see my rail tunnel,under it, and I forgot I included the tower ruins at the top, which dates from the 1500's. Church was built some say in late...
  2. C

    Current and lights and things OH MY!!

    Thanks Dennis. In my younger days I would have thought of that. lately though, I'm not as quick. Here is a pic of one place I'm modelling for my layout. It's in "Idar Oberstein" a little village in the Barvarian mountains, about 60 miles Southwest of Mainz It sits in a huge cave, about...
  3. C

    Current and lights and things OH MY!!

    Agreed. The 9v example was just a test computation double checking my theory AHA !!! (Color understood) I have a 600 watt PC power supply that I have made a panel from. I'm using this along with Arduino, and DCC-EX for the layout . that's where the 5 Volt refrence comes from. Due to...
  4. C

    Current and lights and things OH MY!!

    Some guess work on my part....... Lessee.... if they are truly 3v LED's and there are 2 of them connected to a common 330ohm resistor, If V=IxR therefore R=V/I substituting the numbers R = 6 /.018 Then the math would be 330 / 6 = 0.018 Amps, or 18 milliamps half of which or 9 mA...
  5. C

    Current and lights and things OH MY!!

    Hello Jim, Yes a typo. But they are NOT SMD's sfter all. Further investigation under magnification, reveals them to be just small LED's . Their actual physical measurement is 3mm x 5 m. There are no specifications on the site (a middleman for a European Co.) where purchased, they are...
  6. C

    Current and lights and things OH MY!!

    Thanks for the quick reply, KJD! No, you have all the info I have. designed for 16v and R=330 ohms I thought someone with a similar scenario might have an answer. I know that with Ohms law having any two parameters, can give one the third. E= I x R, I =E/R, R= I x E I don't know the...
  7. C

    Current and lights and things OH MY!!

    Here's one for those electrically / electronically inclined. I recently purchased a set of HO gauge street lamps. they came with instructions for a 16 volt supply and separate 330 Ohm resistors for each pair of SMS lights There are eight units of 2 lamps I wish to use five units, in one...




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