Joe34
Active Member
Rofl, those chips take a beating.
Cheap and Cheerful DIY using Citizen cobs
- Thread starter JorgeGonzales
- Start date
BobCajun
Well-Known Member
How I avoid burning is to grow with LED the entire growth, from seed or cutting. When in veg I let them grow right up close to 100w LED replacement bulbs, you know, the ones that look like light bulbs. Then the COBs used for flowering don't even bother them in the slightest. But when I was using CFLs for early growth, got burnt the fuck up on moving to the COBs.
The Dawg
Well-Known Member
Ok Guy's I Stand Corrected. After Some Research I Found Out Not All Potentiometer Are The Same. I Have Since Switch To A Different Pot And I Gained 12 Watts I.E. 202 Watts Not the Original 190 With A Radio Shack 100 ohm PotBrother rocho Have You Ran Any Test On The On The 1212?? Well I Have And Below Is The Results On A 4 Cob 1212 Ran On An HLG-185-1400. Below Is Pics Well Shit The Bed Fred. The Pics I Was Going To Post Shows the 1212 Running At 190 Watts At 1.56mA
frica
Well-Known Member
Because CFLs are omnidirectional in nature and emit their light pretty much equally in every direction.
A LED bulb even with the diffuser plastic is quasi-omnidirectional at most and will still put much more light directly downwards than sidewards.
The LED bulbs are simply much more intense as it puts out much more light in a single direction.
BuddyColas
Well-Known Member
This section is all about finding and using the best pot!
Love following your 80 vs 90 CRI battle royal. I think all would agree we have a new heavy weight champ. The harvest weights will be the KO. Good on ya.
Thanx so much for your answer!! I m going to do this test!
What voltage/amperes amount would you raccomand me for this test on 5 cobs?
Hi, thanx you too.
I'm little afraid touchig wire by end even if at a low voltage.
Hoe many battery should i used in series in your opinion?
Maybe I've a low voltage charger for old mobile phones ...but as i asket to Bobby i do not know the right value of that.
Thats really strange, first time i read pot could influence the actual driver output.
Maybe Metacanna has the same your problems..I d realy like to understand why that happen...do you have any idea?
nevergoodenuf
Well-Known Member
Most of the $2 pot that are being used are horribly inconsistent and can fail. If you look at the pot that is more expensive ($9-20) you will find it very consistent from one dimmer to the next and will give you full power. If you still feel like buying the cheap dimmers, then add a switch into the circuit to give you 108% (atleast with Mean Well).
RandomHero8913
Well-Known Member
Bridgelux actually recommends that you use PWM:
Note for Figures 3 & 4: 1.
Bridgelux does not recommend driving high power LEDs at low currents. Doing so may produce unpredictable results. Pulse width modulation (PWM) is recommended for dimming effects.
This is from the Gen7 V22 Datasheet
BobCajun
Well-Known Member
That would be regarding variation in color as the current is reduced. Not a major concern in plant growth. I just like PWM because I can try various pulsed light experiments.
CobKits
Well-Known Member
LED volts/9=number of battery. Four batteries would be good for 36 volt COB, five or six for 50 volt COB....
ChefKimbo
Well-Known Member
Joe34
Active Member
Rofl, just googled what an olmec is...Guy on your sig looks like an Olmec head...
In my pic is Idi Amin - a great leader.
I choose a pot with switch included.
I did not find any different between 100% pot and the open circuit ..was a 4 dollars pot from mouser...Iwas lucky, isn t it?
Thanx man!!
Joe34
Active Member
U fell for the jewish propaganda like most of mankind?
How sad...
Speaking of Hitler, Idi Amin adored him...