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OUT OF STOCK 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

jayrob

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Yeah it seems contradictory. :thinking:

But I'm guessing that it's 13.5 max...
 
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Tech_Junkie

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Could the 13.5A be rated for CW, and 30A rated for pulsed? I read somewhere that the highest ratings were based on being pulsed. I cant find the info now though.
 
Alexizupinhea

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Trevor said:
Yep, brand new. Turned on once for a few seconds... if that.

I'm interested in these for the optics, but have no money. :p

-Trevor
Click to expand...

I wouldn't be so sure about that. *Edit: One of my five projectors said "reconditioned" on the bottom* Either way, LEDs last a while, especially the way typical products drive them (not near max output).
 
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Tech_Junkie

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Trevor said:
Oh my. So many optics. Must resist buying projectors. :p
Click to expand...

Trevor if you want some projector optics I can give you them for free. Minus the knife edge, and FS mirrors. $10 will buy those if you want them.
 
Bionic-Badger

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Tech_Junkie said:
Could the 13.5A be rated for CW, and 30A rated for pulsed? I read somewhere that the highest ratings were based on being pulsed. I cant find the info now though.
Click to expand...

According to Luminus's site on the PT-54, the 13.5A is the pulsed operation rating. I have no idea where or how the 30A applies to. Does anyone have a copy of the datasheet somewhere?
 
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DTR

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

They power supply may be useful after all. Thanks for testing it out dyethor.;)

dyethor said:
Ok, I took a pic of the where my test leads are.
IMAG0074.jpg

Then I tried a jumper between the first pin and the 3rd pin pins 3 & 4 are the same.
This resulted in a fluctuating voltage at 12 to 12.5
IMAG0074.jpg

Then jumping pin 1 to either pin 5 or 6 results in a fluctuating voltage from 4 to 4.5
IMAG0072.jpg


If any one with better testing tools can see if these yield a good voltage please test this out. I only have this DVM.
Click to expand...
 
Trevor

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Those are interlocks that allow the power supply to light. I think. I've found that when I connect the original black leads (these are NOT grounds) to their respective place on one of the other boards (pictures tomorrow), the power supply will briefly light and I get 12V response on the main line of power leads. The place where this connector goes seems to be an otherwise isolated patch of some surface mount components I haven't tested. It really just looks like a simple interlock circuit.

However, it quickly cuts off. It might require a load to run like computer PSU's. Or, some logic on the underside of the PSU PCB might be killing it. That's a project for this weekend.

-Trevor
 
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DTR

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Keep us posted.:beer:
 
Bionic-Badger

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

I've been studying the power supply as well. Here's the pin-out as far as I've derived:

attachment.php


attachment.php


I believe the Power ON to the 6-pin connector is an input, and the one on the 16-pin supply is an output, as the former is the input to a photocoupler, and the latter appears to be connected to the collector of a transistor (?) Q102.

The +5V is always on as far as I can see, and is used to turn on the power supply through the photocoupler-connected lead. The power supply might be be providing 12V as well, or just staying on because the power on is floating. I'll have to test it later when I splice the cables.

Edit:

Power ON on the 6-pin connector is active-low. You're measuring 4.53V because of the diode in the photocoupler and the resistor in-line. The anode (+) is connected directly to the +5V input on the 6-pin connector.
 

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DTR

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

^^^^^Awesome thanks for the update and pics.:beer:
 
flecom

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

anyone had any luck getting it to turn on without the diodes? I know we have to emulate the temp sensors and I guess some dummy loads where the diodes went but missing the flex means they are going to need to be attached to the driver PCB...
 
B

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Re: 10 projector's minus diodes for $185

Bluefan said:
That's $18,5 per projector which has a nice LED and other optics. Too bad I'm on the wrong side of the ocean.

But does that means you have already sold/used hundreds of diodes?
Click to expand...

Yeah, why's the fun stuff so hard to get over here.:gun:
 
icecruncher

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

DTR - pm sent
 
DTR

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Plenty in stock.:beer:
 
jcranmer

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Just remember don't throw away anything on these. Yob posted on another thread that the lens cover has some nice magnets inside of it. :)
 
icecruncher

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Re: 10 projector's minus diodes for $185 or 5 for $100 Free US Shipping

Payment sent
 
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