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Author Topic: Texan looking for help  (Read 5721 times)

inertia

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Re: Texan looking for help
« Reply #25 on: July 02, 2015, 04:57:44 PM »

For bulbs you'd need an even number of 3v bulbs, because they need to wired in series pairs to run from a 6v supply. This shows 6 plus your three 6v bulbs:
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CaptTex

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Re: Texan looking for help
« Reply #26 on: July 02, 2015, 05:02:18 PM »

Very useful diagram Inertia, explains what you mentioned earlier very clearly! So even if I were to run 6v through a 3v there arent going to be any negative effects?






Cheers, Tex
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malcolmfrary

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Re: Texan looking for help
« Reply #27 on: July 02, 2015, 05:31:55 PM »

Very useful diagram Inertia, explains what you mentioned earlier very clearly! So even if I were to run 6v through a 3v there arent going to be any negative effects?






Cheers, Tex
Running a 3 volt lamp off 6 volts will be bright, but short lived, unless there is something in the circuit to limit the current - as Dave shows in his diagram, another identical 3 volt lamp.
Whether using incandescent or LED, the usual problem for nav lights is that they are too bright.  The cure for incandescents is to run with a bit less voltage (say, 4.8 instead of 6), for LEDs, a higher value ballast resistor does the job.  I've watched ships at sea at night, because nav lights "only" fulfill a legal need, they tend to be the last thing you see if deck lights are on.  Deck lights are much brighter because the crew need them to see to do work, and that is a cost with a return.
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CaptTex

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Re: Texan looking for help
« Reply #28 on: July 02, 2015, 05:37:52 PM »

Ah ok I see what youre saying, so if I were to do the LED's like martin mentioned then I wouldnt need a resistor unless I needed to dim them, in which case I would use a ballast resistor?
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inertia

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Re: Texan looking for help
« Reply #29 on: July 02, 2015, 06:49:24 PM »

Tex
My advice would be to
a) Go and sit in The Den with a large JD (my first father-in-law was a Kentuckian who lived in Dallas. In sympathy for me for marrying his daughter he taught me some very good hiding-holes!):
b) Suspend your disbelief; and
c) Read these words of wisdom.
http://www.componentshop.co.uk/led-exp/
It ain't rocket science.
It was written by a long-haired bloke from Preston.
DM
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CaptTex

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Re: Texan looking for help
« Reply #30 on: July 02, 2015, 07:08:10 PM »

Thanks Inertia! I'll give it a look!




Cheers, Tex
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malcolmfrary

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Re: Texan looking for help
« Reply #31 on: July 02, 2015, 08:52:46 PM »

Ah ok I see what youre saying, so if I were to do the LED's like martin mentioned then I wouldnt need a resistor unless I needed to dim them, in which case I would use a ballast resistor?
With LEDs you ALWAYS need a resistor.  The only question is what value and where in the circuit it might be.  More resistance, less current, dimmer.  Less resistance, more current, brighter.  This has its limits.  Not enough resistance, too much current, a lot of brightness, but not for long.
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CaptTex

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Re: Texan looking for help
« Reply #32 on: July 03, 2015, 03:48:02 AM »

Ok resistor either way, now I just need her to get here so I can make a more educated placement of the lights that arent on the mast or side boards. Umi's lights look to be top notch, so I might have to go with her as I also see that she has bumper accesories as well!






Cheers, Tex
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