Anyone made any real life voltage measurements of the vesta strips? Im trying to confirm if i can run 9 vestas (one channel) at 1400mA on a hlg320-c1400. Max Output voltage is 229V so would be a real tight fit, estimating 25.25V at 1400 mA. by "one channel" do you mean "2700K AND 5000K together" or...

LivingLight wrote: ↑

Thu Apr 19, 2018 9:56 am

unfortunately i can't find any datasheets for your luxmeter

i found the relative sensitivity curve they also list correction factors:
x 1.1 for mercury lamps,
(x 1.0 for: CFL, cold light, daylight)

LivingLight wrote: ↑

Wed Apr 18, 2018 10:15 am

If you tell me what model you got

i have this one. it's over 10 years old.
i don't know about the quality, probably low. but then again i don't need super accurate measurements.
anyway thank you very much for your calculations.

That's a good price I'm gonna try to see if i can order this elsewhere cuz i always got to pay 15eu for customs charges with digikey. they are an American company. but see what you can do. the price comes down to less than 0.15€ per watt. and considering their dimmability with a 50Kohm potentiomete...

LivingLight wrote: ↑

Sat Apr 14, 2018 12:17 pm

What is a TRP driver?

brand: Thomas Research Products
75W 12$
https://www.digikey.com/product-detail/ ... ND/4332671

they are rated 1A for each color temp. row. so 1 strip is rated for 2A. max is 4A (but that sounds like they would melt). with my 3A CC driver i would give each CCT row 3/5 Amps, which is only 60%. i haven't yet ordered any CV driver, but having an eye on a HLG -185-24A for the future. but these TRP...

in parallel. each temp has it's own + and - connections.

ordered 5pcs of these fellas. i will run them with 2 dimmable 3A CC drivers so i can adjust the intensity of each color temperature

i found it just from a quick Google and only read the abstract. but i found i could download the whole study by using sci-hub.tw very cool for research. this page reminded me of aaron swartz and his guerrilla open access manifesto... and how he commited suicide because law enforcement wanted to pros...

you did an amazing job. thanks for your work.