[PSUBS-MAILIST] LED Driver

Thu Sep 3 12:31:55 EDT 2015

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On Sep 2, 2015, at 6:17 PM, Ken Martindale via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

> You are right, there wasn’t much information and I found it confusing.
>  
> Hope your 60 watt works OK. If their statement about step down is correct then your LED run voltage has to be less than your input voltage.
>  
> The circuit contains an aluminum electrolytic capacitor which makes me question the reliability. But sometimes it still works.
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> Have fun,
>  
> Ken
>  
> From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Alan James via Personal_Submersibles
> Sent: Wednesday, September 02, 2015 5:36 PM
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] LED Driver
>  
> Ken,
> that site didn't have a lot of information.
> This documentation on Ebay desribes them as constant voltage, constant current drivers
> suitable for high power LEDs. 
> LED Power Driver Constant Voltage Current Adjust CC CV
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> LED Power Driver Constant Voltage Current Adjust CC CV
> US $11.00 New in Business & Industrial, Electrical & Test Equipment, Test Equipment
> 
> View on www.ebay.com
> Preview by Yahoo
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> It does say to heat sink it if running more than 25W. Heatsink version available on his site. 
> When I mentioned the price to my LED friend yesterday
> he was a bit dubious & suggested I might get what I payed for.
> You have prompted me to do a bit more experimentation; so have it running at the moment
> driving a 60W LED & will see how long it runs for.
> Hope you enjoyed the trip to Ireland.
> Alan
>  
> 
> From: Ken Martindale via Personal_Submersibles <personal_submersibles at psubs.org>
> To: 'Personal Submersibles General Discussion' <personal_submersibles at psubs.org> 
> Sent: Thursday, September 3, 2015 8:39 AM
> Subject: Re: [PSUBS-MAILIST] LED Driver
>  
> I looked at this chip and it’s primarily a buck voltage regulator not intended for use as a constant current LED driver.
>  
> You can try using it but I’m not optimistic about them.
>  
> Let me know if it works.
>  
> Ken Martindale
>  
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> From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Alan James via Personal_Submersibles
> Sent: Tuesday, August 18, 2015 8:02 AM
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Subject: [PSUBS-MAILIST] LED Driver
>  
> Bought this LED driver & a 4000 & 6000 lumen emitter.
> It may be helpful with regard to our open source light.
> This one describes itself as having a wattage output limitation, 
> beyond which cooling is required. This may be just a heat sink but
> I'm not sure. 
> There are other higher powered constant voltage, constant
> current drivers on site. 
> There was no description of how it worked with the product, but managed to
> find one on the site posted at the bottom. The blue trim-pot on the left
> increases voltage by a clockwise turning & the right trim-pot increases current.
> Alan
> LED Power Driver Constant Voltage / Current Adjustable Module - Blue + Black
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> LED Power Driver Constant Voltage / Current Adjustable...
> I like this from DX. Find the cool gadgets at a incredibly low price with worldwide free shipping here.
> 
> View on www.dx.com
> Preview by Yahoo
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> 1~35V DC 25W Power LED Driver Supply LM2596 CC CV Light [Constant Voltage Current_A] - $15.00 : Zen Cart!, The Art of E-commerce
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> 1~35V DC 25W Power LED Driver Supply LM2596 CC CV...
> Zen Cart! 1~35V DC 25W Power LED Driver Supply LM2596 CC CV Light [Constant Voltage Current_A] - LED Power Driver Constant Voltage / Current Adjustable C...
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> View on www.xscyz.com
> Preview by Yahoo
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>  
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