DIY CXB2530 3000K 80cri U2 bin (Vero Killers!)

[ttystikk]

"As long as the heatsink is connected to the ground"

Do you mean where the ground wire is grounded when saying connected to the ground (on the metal) or it needs to be grounded to the literal....ground. (rod mounted in dirt like my dad has at his workbench)

....ground, ground........ground.

Even typed something so much that the spelling starts to look wrong..? Yea...

Grounding wire in your electrical system. This is either the third wire in 120V or the FOURTH wire in 240V, not to be confused with the neutral in a three prong 240V dryer outlet.

I've totally been there with your brain playing tricks on you...

 

[churchhaze]

It looks like the price per individual cob has been reduced.

$21.00 bucks at digikey for U2 bins now. When I made this, they were 24.15 each individually!

To scale this up, cost of leds:
was $2.81/PARW
now $2.44/PARW

 

[churchhaze]

I turned out the lights to check the writing for "B" to make sure digikey sent me cxb and not cxa. Of course the ideal holders got in my way.. so I couldn't read... That's not the point of this post.

I turned the lights back on and saw a fat ass lady bug crawling around on a fan leaf... I really hope there are no spider mites.. but my main point.. Don't HPS lamps kill lady bugs? Isn't that one of the main reasons they aren't effective to use against spider mites? That they'll all just die?

 

[bicit]

I turned out the lights to check the writing for "B" to make sure digikey sent me cxb instead of cxa. Of course the ideal holders got in my way.. so I couldn't read... That's not the point of this post.

I turned the lights back on and saw a fat ass lady bug crawling around on a fan leaf... I really hope there are no spider mites.. but my main point.. Don't HPS lamps kill lady bugs? Isn't that one of the main reasons they aren't effective to use against spider mites? That they'll all just die?

I've never heard of this, I've used lady bugs before for mites. They usually die off due to lack of food IME.

Where does one acquire these cob holders for a CXB3590?

 

[churchhaze]

I've never heard of this, I've used lady bugs before for mites. They usually die off due to lack of food IME.

Where does one acquire these cob holders for a CXB3590?

I think Newark is the best place to get them, although I'd pay a little more to reduce total number of places ordered from if possible. I'm using cxb2530 just to be clear, which has a LES diameter of 19mm, similar to vero 18.

 

[REALSTYLES]

I turned out the lights to check the writing for "B" to make sure digikey sent me cxb and not cxa. Of course the ideal holders got in my way.. so I couldn't read... That's not the point of this post.

I turned the lights back on and saw a fat ass lady bug crawling around on a fan leaf... I really hope there are no spider mites.. but my main point.. Don't HPS lamps kill lady bugs? Isn't that one of the main reasons they aren't effective to use against spider mites? That they'll all just die?

yep I've seen them fly straight into them and smell like burnt popcorn lol.

 

[nogod_]

They are $13 on verical for the u2 bin but you gotta buy a hunnid. Ive had them in my cart for a week and a half but i promised myself no dessert until im done with my dinner.

It looks like the price per individual cob has been reduced.

$21.00 bucks at digikey for U2 bins now. When I made this, they were 24.15 each individually!

To scale this up, cost of leds:
was $2.81/PARW
now $2.44/PARW

 

[AquariusPanta]

As long as the heat sink is connected to ground, it should work to create a short circuit if any live wire touches the heat sink, so all the current goes through the ground and hopefully trips a breaker.

How about the socket is grounded and bolted to the chassis, which feeds off the power from the power cord, which in turn feeds the driver(s), ultimately powering on the COB(s)?

Does that give users the same safety results? I'm thinking of just 120V AC / ~30V DC per driver @~700mA, all COBs ran on CPU heat sinks...

 

[churchhaze]

How about the socket is grounded and bolted to the chassis, which feeds off the power from the power cord, which in turn feeds the driver(s), ultimately powering on the COB(s)?

Does that give users the same safety results? I'm thinking of just 120V AC / ~30V DC per driver @~700mA, all COBs ran on CPU heat sinks...

What? lol

 

[PSUAGRO.]

Yes some beneficial s can't see under hps......

 

[AquariusPanta]

What? lol

Forget it. lol

 

[Getgrowingson]

How about the socket is grounded and bolted to the chassis, which feeds off the power from the power cord, which in turn feeds the driver(s), ultimately powering on the COB(s)?

Does that give users the same safety results? I'm thinking of just 120V AC / ~30V DC per driver @~700mA, all COBs ran on CPU heat sinks...

Just extend the ground from the 120v power cord your using to power your drivers ect and mount the wire to the heatsink. easy peasy

just make sure the outlet your powering them on has a ground on the receptacle lol

 

[AquariusPanta]

Just extend the ground from the 120v power cord your using to power your drivers ect and mount the wire to the heatsink. easy peasy

just make sure the outlet your powering them on has a ground on the receptacle lol

Well uh... if there is one heat sink per COB/driver... just forget it... thank you for the input though lol.

 

[Getgrowingson]

Are the heat sinks attached with anything ie aluminum or metal? If so they are all bonded to some point so all you need is it attached to one provided there is some sort of connection

 

[AquariusPanta]

Are the heat sinks attached with anything ie aluminum or metal? If so they are all bonded to some point so all you need is it attached to one provided there is some sort of connection

Mhm.

 

[Getgrowingson]

But yea at that voltage and current not worth the hassle. 30 most of the time doesn't have enough juice to push through the resistance of your skin

 

[churchhaze]

I wouldn't worry about grounding sinks with 30V drivers. I don't want someone to zap themselves with 400V because a wire gets disconnected from a cob holder and pushes up against the heat sink, making the heat sink 400V..

 

[AquariusPanta]

But yea at that voltage and current not worth the hassle. 30 most of the time doesn't have enough juice to push through the resistance of your skin

Now this information I like, GGS.

 

[AquariusPanta]

I wouldn't worry about grounding sinks with 30V drivers. I don't want someone to zap themselves with 400V.

Main reason why I asked to forget the inquiry.



How are you feeling lately? You were talking the other night about feeling down and shit..

 

[caretak3r]

I was studying the cob efficiency thread earlier. It seems to me that cxb2530s are the way to go over the 3070s. I'm not sure why more people aren't building out units like yours churchhaze.