http://store.marinebeam.com/dc-dc-converter.html

Dennis C.

Sent from my iPhone

On Jun 28, 2013, at 9:31 AM, bria...@aol.com wrote:

>  
> One other thing... when my batteries were charging on the charger after I'd 
> been away from the boat for a month, the voltage initially approached 14.2 
> volts. Before I used the buck converters, I measured the temperature of the 
> LEDs with a temperature probe in contact with an LED. It approached 182 
> degrees F, much to hot. This temperature will dramatically shorten the LEDs 
> life, or cause damage to the circuitry built into the strips, causing 
> premature failure.
>  
> After installing the buck converters, the LED  temperature (after being on 
> for 1/2 hour) was in the 100-110 degrees F range as best I recall. Ambient 
> temperature in both cases was about 80 degrees F, and these are high-output 
> LEDs.
>  
> Part of the problem with these strips is that they cannot/do not have 
> effective heat sinks to dissipate high temperatures. This is even more of a 
> factor with the newer higher-output LEDs being used.
>  
> Bill
>  
> MYSTY
> Landfall 39
> From: bria...@aol.com
> To: cnc-list@cnc-list.com
> Sent: 6/28/2013 8:13:29 A.M. Eastern Daylight Time
> Subj: Re: Stus-List LED cabin lights
>  
> Rich,
>  
> I replaced all the recessed light fixtures on    MYSTY with LED's that I 
> made, using the cleaned-up carcasses of the original fluorescents, some very 
> bright double-wide LED strips, and buck voltage converters.
>  
> I used buck converters (that's really what they're called) that I found on 
> eBay. They serve the same function as the devices your link describes. I 
> bought 5 at a time, and paid approximately US$10 for all, including shipping 
> from China.
>  
> I then, using an adjustable DC power supply, connected the completed 
> converted lights and set the converters. I set the converter output to 12 
> volts when the input voltage is 15.0. The net result is slightly less light 
> output at voltages lower than 15.0, but the LEDs are protected should the 
> voltage go that high.
>  
> Only one issue to be aware of. The converters DO NOT tolerate being connected 
> with "+" and "-" inputs reversed. Don't ask how I know....
>  
> Bill
>  
> MYSTY
> Landfall 39
>  
>  
>  
>  
>  
> In a message dated 6/28/2013 7:31:03 A.M. Eastern Daylight Time, 
> r...@sailpower.ca writes:
> http://dx.com/p/car-150w-dc-8-32v-to-9-46v-voltage-boost-converter-regulator-for-laptop-blue-206971?utm_rid=95527470%2C95527470&utm_source=shopping&utm_medium=pcs&utm_campaign=paidshopping
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