Quick Driver Question
- Thread starter DukeFluke
- Start date
Rocket Soul
Well-Known Member
It will run in CC mode for voltages under 48, same max current as with a 48V load. So you wont get 480 w out of it, youd get approx (38/4
*480w output. Comes out as 380w output. Mitigation: making the voltages match up better, adding about 10V for each string/strip. For example adding a 1 foot bxeb 3, slim version to every string. Please double check the voltage of the slims cause im a bit rusty on specs
Rocket Soul
Well-Known Member
If using A-version with voltage regulation you could probably even use two hlg240-36A, you can tweak them to 40V
Cheers bud... Not the A model?
Rocket Soul
Well-Known Member
A is internal dimmer, the screw driver in the whole variant. Somewhat messy for fine tuning. B is for external dimmer.
7CardBud
Well-Known Member
The A model is fine. You may want a trimpot adjuster as well.
Gc Electronics Tools - 8608: Electronic Components: Amazon.com: Tools & Home Improvement
Hey, another quick question. Just ordered two HLG-480h-42AB from Ledlightingsave but they're out of stock and are offering me 6 x HLG-185h-42AB instead. Any reasons why that would be an issue to use the 6 instead of the two? Cheers
Apart from the extra wiring of course.
Apart from the extra wiring of course.
7CardBud
Well-Known Member
Findchips: hlg-480h-42 Price and Stock
I can vouch for Mouser, I have used them for decades with great service.
Yea I've used Mouser and Digikey before but I've also heard decent reviews of this place from people who've checked out serial numbers with manufacturers etc, just want to know whether the 3 x 185s would be a pain in the ass or an advantage over the single 480? Thanks again
7CardBud
Well-Known Member
Unless there is a big price savings I would rather wire 2 drivers instead of six. 2 mains lines, 2 dimmers and 4 dc leads vs 6 mains, 6 dimmers and 12 dc leads.
grotbags
Well-Known Member
no disadvantage other than the wiring like you mentioned.
using 6 drivers instead of 2 could have its advantages, depending on your strip layout you could power and dim the center of the light fixture independantly of the edges allowing you to get a more even ppfd across your canopy.
if you didnt want independant control of different lighting sections you could still use all 6 drivers with just 1 dimmer to make things a bit more simple.
How so buddy?
shimbob
Well-Known Member
There used to be plenty of chatter in this forum about the hlg-185 delivering more than spec'ed. (In general all MW drivers seem to give a little more than promised)
Looking at the test report shows it can do up to 4.8A
Looking at the test report shows it can do up to 4.8A
shimbob
Well-Known Member
Had a setup with an HLG-600H-42A drawing 730W at the wall and pushing 700W on the DC side, crazy times
Rocket Soul
Well-Known Member
Everyone of these threads i rec the test report, love to see someone else using it. Between about a few percent more in actual current, and the sometimes up 10% extra Voltage the A-type driver can give theres almost 15% extra output over rating. Im not sure but i think when i looked into this its generally more prominent on the lower watt drivers. If OP wanted he could probably make this work with 36A drivers, especially if he wanted to run around nominal power, for about 38V output. The 185-36A can get up to 40V output which is enough. But then again you can never be 100% sure that you can get over spec, but i believe 38V would be in spec.
It was actually @CobKits who clued me in in an old thread: test report will give you values which are closest to actual measured output.
The extra power from A-type drivers are twofold: 1: some extra current in the output. Usually a few percent at least. Again, check test report.
2: extra voltage: you can adjust voltage up by about 10% or even more which would make it easy for a 48A driver to handle 50V boards/cobs usually.
For the B-type driver the extra power lies in running the driver without dimmer pot: the dimmer will make the range from 0/5% (some will dim to off) to 100% out current but if you either unplug the dimmer (or just keep a switch on the circuit to break it whenever you want that extra boost) or you set up your pot with a small resistor in series taking the restiance of the dimmer circuit up a bit to get the extra juice. I cant remember quite how to do this though, its on some thread somewhere.
But you wouldnt get that extra voltage on a B-type driver, only on A-type.
Ive still not got a real sense of what actually is the case of AB-type drivers; ive seen some say they have voltage + current dimming knobs, and external dimming aswell. Some says its only current for onboard dimming. Some schematics show 2 knobs (or holes) some show only one.
7CardBud
Well-Known Member
It most likely would.
My 480H-C2800 is a few years old and maxes out at 163V at 3.15amps on the DC side. It probably pulls about 550watts from the wall.