Author Topic: Passenger car lighting with LED strips  (Read 7585 times)

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Lemosteam

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Re: Passenger car lighting with LED strips
« Reply #45 on: June 20, 2013, 06:28:48 AM »
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Self-stick aluminum tape for duct work?

craigolio1

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Re: Passenger car lighting with LED strips
« Reply #46 on: June 22, 2013, 02:42:01 PM »
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I thought of that but it's pretty thick.

Craig

peteski

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Re: Passenger car lighting with LED strips
« Reply #47 on: June 22, 2013, 03:17:10 PM »
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I thought of that but it's pretty thick.

Craig

Bare Metal Foil maybe?  It is very thin and pliable. I use it on model automobiles (another one of my hobbies).
http://bare-metal.com/  Available in hobby shops catering to model car crowd.
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craigolio1

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Re: Passenger car lighting with LED strips
« Reply #48 on: June 22, 2013, 07:48:39 PM »
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Peteski, that is a great idea.  I too use it on my model cars and there for i happen to have some.  It doesn't come thinner than that.

I sent you a pm (or would it be an email?) about another lighting circuit not related to trains.

Craig

wdhalsey

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Re: Passenger car lighting with LED strips
« Reply #49 on: April 12, 2019, 04:09:04 PM »
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Petski, in your diagram R2 is a resistor to set the brightness of the LEDs.  Would it be possible to replace that with a pot to allow the brightness to be adjustable for different circumstances?

peteski

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Re: Passenger car lighting with LED strips
« Reply #50 on: April 12, 2019, 04:38:50 PM »
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Petski, in your diagram R2 is a resistor to set the brightness of the LEDs.  Would it be possible to replace that with a pot to allow the brightness to be adjustable for different circumstances?



A potentiometer is just a variable resistor, so yes, you sure can replace a fixed-resistance R2 with a pot.  If you are using a 12V LED strip then the R1 will limit the maximum current going through the circuit, even if you adjust the R2 pot to zero ohms.  Going in the other direction (higher resistance) you can make R2 resistance high enough to make the LEDs barely glow.  As for the pot's power raring, that depends on the range of resistance you will be using.  If you are planning on using pot's resistance 15k or higher, then a 1/10W power rated pot will work. But if you use a lower resistance (brighter LEDs), then you should use resistors with a higher power rating (since more current will go through the circuit.  That goes for both R1 and R2 (or a pot as R2). In that scenario a 1/4W R1 and R2-pot should be used.
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wdhalsey

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Re: Passenger car lighting with LED strips
« Reply #51 on: April 12, 2019, 04:46:03 PM »
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Peteski, Thank you for the quick reply and confirmation.  I have been looking for a reasonable alternative to the passenger lighting solutions offered by the manufacturers and the after market battery boards.  I think the circuit you designed and publised is an affordable and elegant solution and I appreciate your efforts very much.

peteski

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Re: Passenger car lighting with LED strips
« Reply #52 on: April 12, 2019, 04:47:36 PM »
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Peteski, Thank you for the quick reply and confirmation.  I have been looking for a reasonable alternative to the passenger lighting solutions offered by the manufacturers and the after market battery boards.  I think the circuit you designed and publised is an affordable and elegant solution and I appreciate your efforts very much.

You're very welcome!  :D
--- Peteski de Snarkski
--- Honorary Resident Curmudgeon

wdhalsey

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Re: Passenger car lighting with LED strips
« Reply #53 on: May 17, 2019, 04:43:50 PM »
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Hi Peteski, I sent you a PM.

peteski

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Re: Passenger car lighting with LED strips
« Reply #54 on: May 17, 2019, 05:34:08 PM »
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Hi Peteski, I sent you a PM.

Got it - will respond soon.  :)
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