DiY LEDs - How to Power Them
- Thread starter SupraSPL
- Start date
Humanrob
Well-Known Member
There is a lot I don't know, I could use some clarification with basic driver questions.
It appears some drivers run constant watts(?) no matter how many cobs are attached to them (I was told that my HLG-120H-C1400 would run either 2, 3, or 4 (cxb) cobs -- but regardless of the number attached the cobs would always run @ 50w (with varying degrees of efficiency from the driver) ). Other drivers run at a flat output watt rate, and that total number is divided by the number of cobs (HLG-120H-48A, would run 2 (50v) cobs at 75w (+/-) or 3 @ 50w (+/-) ).
What I want to confirm is the former -- that an HLG-120H-C1400 always puts out a constant level (and yes, I am clueless about amps/watts/volts) of energy and adjust 'itself' to do so with various amounts of demand downstream?
If that's true, it would be a better candidate for running in parallel with several cobs that each had an inline on/off toggle switch, and it would be OK/safe to run some or all of the cobs connected to it depending on the need?
It appears some drivers run constant watts(?) no matter how many cobs are attached to them (I was told that my HLG-120H-C1400 would run either 2, 3, or 4 (cxb) cobs -- but regardless of the number attached the cobs would always run @ 50w (with varying degrees of efficiency from the driver) ). Other drivers run at a flat output watt rate, and that total number is divided by the number of cobs (HLG-120H-48A, would run 2 (50v) cobs at 75w (+/-) or 3 @ 50w (+/-) ).
What I want to confirm is the former -- that an HLG-120H-C1400 always puts out a constant level (and yes, I am clueless about amps/watts/volts) of energy and adjust 'itself' to do so with various amounts of demand downstream?
If that's true, it would be a better candidate for running in parallel with several cobs that each had an inline on/off toggle switch, and it would be OK/safe to run some or all of the cobs connected to it depending on the need?
Abiqua
Well-Known Member
wire two in series for 48v...then if using multiple strings,wire all the positive leads together and all the negative leads together in parallel to draw the proper current.
In parallel, divide all strings by total amperage to calculate what each string will draw....cheers
OLD MOTHER SATIVA
Well-Known Member
retrofitting blackstar 240 burned out board with vero 18's
hooked 3 vero 18's on each of the two of the drivers 80-130Vf /510 ma-in Parallel***
plugged it in - pulses like a slow strobe light
should i have hooked them up series ?
hooked 3 vero 18's on each of the two of the drivers 80-130Vf /510 ma-in Parallel***
plugged it in - pulses like a slow strobe light
should i have hooked them up series ?
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OLD MOTHER SATIVA
Well-Known Member
i was not thinking and have hooked every build i have done ,parallel...[those seniors]
thankyou
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RandomHero8913
Well-Known Member
Hey guys, I have 9 vero18's that are running in sets of three, each set has its own 560ma driver that isn't dimmable. I'm thinking about picking up a Hlg-185H-36a to run these but I'm unsure about one thing. On the spec sheet it shows the Constant Current Region between 18~36v and it has an adjustable voltage of 33~40v. Now if I'm running these at the lowest end of the Current 2.6a spread over 9 cobs its 290ma and will be under 33v.
Will the driver pick the correct voltage to run at if my running voltage is under the self-adjustment threshold of 33v?
Thanks
Will the driver pick the correct voltage to run at if my running voltage is under the self-adjustment threshold of 33v?
Thanks
OLD MOTHER SATIVA
Well-Known Member
RandomHero..what a coincidence!..three for each
two drivers... 6 vero 18's
i just hooked three vero 18's in series to each 80-130Vf /510 ma driver and it works!
the two drivers and 6 cobs are only drawing 106w total at the wall
i wonder if there is any way to get more out those two drivers with vero 18's?
two drivers... 6 vero 18's
i just hooked three vero 18's in series to each 80-130Vf /510 ma driver and it works!
the two drivers and 6 cobs are only drawing 106w total at the wall
i wonder if there is any way to get more out those two drivers with vero 18's?
Abiqua
Well-Known Member
it will "settle" on a voltage from the current it draws....and may draw up to the 33v for instance if ambient temp rises....a little testing is probably in order to see what the vF settles to after warming up aka volt droop
Abiqua
Well-Known Member
adding some monos isnt a terrible idea although you may be able to squeeze a 4th vero onto your strings
RandomHero8913
Well-Known Member
Thanks. I have them all running in series now with the 560ma constant current drivers i goat fucked from a roleadro light. My area of confusion is with these parts:
OLD MOTHER SATIVA
Well-Known Member
Rnadom Sir,
i am no real person to ask but the voltages match vero18's range and the HLG will "self adjust"
i am no real person to ask but the voltages match vero18's range and the HLG will "self adjust"
Rider509
Well-Known Member
A 100k ohm linear potentiometer wired per the Meanwell diagrams. So easy a caveman could do it.
weirdingway
Member
need help new to LED
just bought (2) 100w 36v 3a full spectrum COBs from china off ebay and i need to know what i need to power and or drive them.
on amazon i found this led driver with this description
Tesfish 100W LED Driver Adaptor Power Supply AC 85~265V to 30~36V 3A For 100W High Power LED Floodlight Bulb
can anyone tell me if this driver can have just a plug attached and plug directly into the wall and the other end wired directly to the COBs?
also how many COBs will it power/drive at full power? just one or two or more?
thanks for the help!
just bought (2) 100w 36v 3a full spectrum COBs from china off ebay and i need to know what i need to power and or drive them.
on amazon i found this led driver with this description
Tesfish 100W LED Driver Adaptor Power Supply AC 85~265V to 30~36V 3A For 100W High Power LED Floodlight Bulb
can anyone tell me if this driver can have just a plug attached and plug directly into the wall and the other end wired directly to the COBs?
also how many COBs will it power/drive at full power? just one or two or more?
thanks for the help!
GBAUTO
Well-Known Member
Any information on the cob's? You will need to know how much current you want to run.
weirdingway
Member
yes sir, i think i posted it already.
each COB is rated at 100 watts, 30-36 volts and 3 amps.....
is that what you needed?
RandomHero8913
Well-Known Member
Thats a constant voltage driver. You can add all the COBs you want, just divide 3 by the number of COBs you choose and that's your current.