need help looking for a DC input led power supply (12-24V)

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dacflyer
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need help looking for a DC input led power supply (12-24V)

Post by dacflyer » Sun Sep 11, 2016 9:50 am

i have some 10w (36v @ 350ma) 9x9 led chips (DC-LE14177)
i am looking for a DC powered PS for them, i can find plenty of AC powered supplies, but can't find DC.
can anyone help me look ? thanks..

sad thing is,, i bought these for almost free at a flea market, guy did not know what he had.
but these leds i found out were not typical series parallel , they are in all series. 36v..
if PS is gonna be too expensive, i'll just toss em, unless someone wants em..
i am wanting to make me some dc led flood lights.

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Janitor Tzap
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Re: need help looking for a DC input led power supply (12-24

Post by Janitor Tzap » Sun Sep 11, 2016 10:44 am

Found this on E-bay.
http://www.ebay.com/itm/10W-Warm-White- ... 0933941476

I hope you got the Heatsink that goes on the back of these.
Image


Signed: Janitor Tzap

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Re: need help looking for a DC input led power supply (12-24

Post by Externet » Sun Sep 11, 2016 4:49 pm

Dacflyer : A DC to DC converter module from the candy store should work. If you have 10, counterparallel them to 125VAC.

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Re: need help looking for a DC input led power supply (12-24

Post by dacflyer » Mon Sep 12, 2016 8:03 am

that heatsink is over kill..lol
i actually have some of them china made 10W led flood lights i got for super cheap at a flea market, 220V models. i got em for 5.00 each, was only 2 of them.
anyway i want to convert them to DC for solar use, may even put one on my electric lawn mower ( 24VDC ) for mowing some in the evenings, and not wanting to disturb my neighbors with gas mower. i have 1/3 acre yard, and i can cut 3/4 of it before it needs recharged.

but the leds in the light are 9 leds in series, i have seen others of the same looking style that are series / parallel
so i guess i need to look for a DC/DC converter rather than a DC led power supply ??

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Re: need help looking for a DC input led power supply (12-24

Post by MicroRem » Mon Sep 12, 2016 12:12 pm

AllElectronics.com has a 29.4 volt supply for $9. You would lose some brightness but the price is right. CAT# PS-294.

Tom

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Re: need help looking for a DC input led power supply (12-24

Post by Externet » Mon Sep 12, 2016 12:41 pm

Electric mower... niiiice !
Is there any room to add another smaller 12V battery, even hanging on the side as a canteen ?

Use the 24V from the mower plus the additional 12V battery in series only for your 36V light. Choose the extra battery for lights that will be capable of the lights consumption time.
Yes, you will need an extra 12V charger alligator-connectable only to the added battery.

Code: Select all

(+)Extra12V Batt(-)----------Mower(+)-------12VBatt----------12VBatt-------Mower(-)
(+)-------------------./.--------------Lights-----------------------------------(-)
(+)Extra12V Batt(-)----------Mower(+)-------12VBatt----------12VBatt-------Mower(-)
(+)-----------------------./.------------------Lights---------------------------------------(-)

Or, from the candy store, $7 :
----> https://www.aliexpress.com/item/2PCS-15 ... 4443696967

Or at $5 :
----> https://www.aliexpress.com/item/DC-DC-A ... d09531f769
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Re: need help looking for a DC input led power supply (12-24

Post by haklesup » Mon Sep 12, 2016 3:58 pm

You didn't say what DC voltage you wanted to convert to 36V. I think we have been assuming you are starting with 12V. In any case, there is no way to increase DC voltage without turning it into AC first than back to DC. You can probably find a 12V to 36V DC-DC module if you search but you can also use a 12VDC to 120VAC converter in series with a 120V to 36V LED Driver which are dirt cheap. It won't be particularly efficient and by the time you are done though and you may already have these components.

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Re: need help looking for a DC input led power supply (12-24

Post by Lenp » Mon Sep 12, 2016 9:24 pm

Dacflyer
Look at this DC booster. I have used several to compensate for voltage drop on 112 volt well sampling pumps.
They worked well for me!
Under $4, free shipping from China!

http://www.ebay.com/itm/1pc-DC-Converte ... Sw7s5XhMfK
Len

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Re: need help looking for a DC input led power supply (12-24

Post by dacflyer » Tue Sep 13, 2016 2:20 pm

LENP >>> i have one of them already for a 100W led chip i have for a 100W led flashlight..lol but it is too big for a 10W led.

i think i found what i need.. if you can see this link..Ebay..
http://www.ebay.com/itm/161634991380?_t ... EBIDX%3AIT

it is a 300ma current supply for leds..
( 300mA Boost Regulator LED Driver Board for 10W High Power LED (LE-LL44112))
made by SURE, same people that made the led. so i should be set with a matching set..

it will take a while to get here since it comes from CHINA....

haklesup>> i am wanting to go from 24v source,. the led needs 3 volts to light up...and 300ma current draw.
the boost regulator does just that.. i remember that leds like current regulators, not voltage regulators.

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Re: need help looking for a DC input led power supply (12-24

Post by Lenp » Wed Sep 14, 2016 10:47 am

Since you're dabbling with LED's....
Previously I posted about the Microchip CL220. It is an LED 20ma current regulator with an input of 5V-220V, and, they can be paralleled for more current!
Mouser lists them at $1.58 under 10 qty. Here's the factory data: http://www.microchip.com/downloads/en/D ... 05413A.pdf
Len

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Re: need help looking for a DC input led power supply (12-24

Post by jwax » Wed Sep 14, 2016 12:07 pm

Why not build yourself a rechargeable Li-Ion battery pack? Size it to whatever your voltage/current needs may be.
18650 size Li-Ion cells are all over ebay for cheap.

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Re: need help looking for a DC input led power supply (12-24

Post by Externet » Wed Sep 14, 2016 5:23 pm

Interesting, lots of options... Making a 36V power pack from LiIon... ductaping a plain flashlight... adding a 12V to the 24V to make it 36V... DC converting from 24V to 36V... Current driver...
I would reserve those 36V LEDs for something else, as there is yet another option : Two 12V automotive LED-or-not lamps in series, or independent 12V lamps to each battery... There is also heavy truck 24 V lamps...
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Re: need help looking for a DC input led power supply (12-24

Post by dacflyer » Sat Sep 17, 2016 11:22 am

well i already have the led and fixture, so all i have to do to make it DC operable is to change the PS.
i thought bout 2 - 12v lights in series, but i did not have any fixtures handy..
2 tractor fixtures would have been easy. i got par 36 bulbs, but no fixtures..

LENP >>> wow such a large voltage range..

JWAX >>> i already have 11V Lion battery packs, i'll be using one of them on my 100W led flashlight when finished.
and my mower already has 24v handy.

Externet >> thought bout 24v lamps also..but again no fixture..

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