PWM = pulse width modulation. Turning the lights on/off very quickly.
Graham Collins
Secret Plans
C&C 35-III #11
On 2013-06-28 11:50 PM, Stevan Plavsa wrote:
Ok, I'm convinced .. would this work:
http://www.ebay.com/itm/CAR-LED-Waterproof-20w-DC-DC-Buck-Converter-24V-to-12v-/251173241355
Also, what about dimmers? I see PWM dimmers on ebay purpose built for
LEDs but they don't step the voltage down. How does that work?
Steve
Suhana, C&C 32
Toronto
On Fri, Jun 28, 2013 at 9:52 PM, Knowles Rich <r...@sailpower.ca
<mailto:r...@sailpower.ca>> wrote:
I'll see what it looks like when it gets here. A shot of lacquer
will probably do just fine to seal it. Or a shot of liquor for me
if it helps.
Rich Knowles
Indigo. LF38
Halifax
On 2013-06-28, at 22:07, Graham Collins
<cnclistforw...@hotmail.com <mailto:cnclistforw...@hotmail.com>>
wrote:
Hmm... screw terminals, yes, but nice?
Well, if I were buying it to put on a boat I would first give it a
scrub with isopropyl alcohol to get the flux off, and it wouldn't
hurt to brush some epoxy on it to seal it. Otherwise the residues
I can see in that picture will eat the circuit board within a year.
Graham Collins
Secret Plans
C&C 35-III #11
On 2013-06-28 5:02 PM, Knowles Rich wrote:
> Steve and others:
>
> I chose the unit I noted because it has a toroidal transformer
which likely makes it a switching unit and, according to the
description, it will maintain a constant output regardless of
input voltage. Also it has nice screw terminals.
>
> Rich Knowles
> Indigo. LF38
> Halifax
>
> On 2013-06-28, at 9:25, Steve Thomas <sthom...@sympatico.ca
<mailto:sthom...@sympatico.ca>> wrote:
>
>
> Rich,
> On a second look I realized that the devices I ordered will
not work for you since the output voltage cannot be adjusted
> lower than the input.
>
> This unit might suit your application. It is a purpose built
constant current LED driver from the same guy, and even less
> expensive.
>
>
http://www.ebay.ca/itm/DC-Converter-Constant-Current-Voltage-1-3-30V-LED-Driver-Battery-Charger-LM2596-/390616867671?pt=LH_Defaul
> tDomain_0&hash=item5af2946357
>
> Steve Thomas
> C&C27 MKIII
> Port Stanley, ON
>
> -----Original Message-----
> From: CnC-List [mailto:cnc-list-boun...@cnc-list.com
<mailto:cnc-list-boun...@cnc-list.com>]On Behalf Of Steve
> Thomas
> Sent: Friday, June 28, 2013 8:12 AM
> To: cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>
> Subject: Re: Stus-List LED cabin lights
>
>
>
> Rich,
> I ordered 4 similar devices from this guy a couple of days
ago. The price is a bit better directly from China. My intention
> is to be able to run 24 volt equipment.
>
>
http://www.ebay.ca/itm/281041084321?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
>
> Steve Thomas
> C&C27 MKIII
> Port Stanley, ON
>
>
> -----Original Message-----
> From: CnC-List [mailto:cnc-list-boun...@cnc-list.com
<mailto:cnc-list-boun...@cnc-list.com>]On Behalf Of
> Knowles Rich
> Sent: Friday, June 28, 2013 7:31 AM
> To: cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>
> Subject: Re: Stus-List LED cabin lights
>
>
> For those who may recall my little LED cabin lighting project
(Fred for one), I noticed that there is some light level flutter
> when my Espar heater or refrigeration is running, an effect that
is not noticed on incandescent lights. I am also concerned about
> the long term negative effect of high voltage levels during
battery charging. The only practical solution is to install a voltage
> regulator in the lighting circuits.
>
> After a day of unsuccessful local research, I stumbled on the
URL below and have ordered a couple to try out. The source dx.com
<http://dx.com> is
> an interesting one you may wish to explore a bit.
>
>
http://dx.com/p/car-150w-dc-8-32v-to-9-46v-voltage-boost-converter-regulator-for-laptop-blue-206971?utm_rid=95527470%2C95527470&ut
> m_source=shopping&utm_medium=pcs&utm_campaign=paidshopping
>
> Rich Knowles
> INDIGO LF38
> Halifax, NS.
>
>
>
>
>
>
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