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Old Jul 11, 2012, 07:55 AM
Steven
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United States, CT, East Hartford
Joined May 2010
504 Posts
Hello on2vhf.

Shorting A6 and B5 to ground should power up your ESP 117 (DPS-600CB).

http://www.rcgroups.com/forums/showp...postcount=1537
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Old Jul 11, 2012, 05:20 PM
Registered User
Germany, TH, Hildburghausen
Joined Jul 2012
11 Posts
Hi, I have my kd-175 converted to 13.8volt and to the manual fan control: http://www.rcgroups.com/forums/showp...&postcount=610 [1k and 50k poti] but I think it is the fan does not spin fast enough, what mechanism do I change it to run faster? (Works well dan still the automatic fan speed control?)
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Old Jul 11, 2012, 05:31 PM
Steven
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United States, CT, East Hartford
Joined May 2010
504 Posts
Hello Robo1981.

What do you mean by "the fan does not spin fast enough"?

If you need the fans to run normally then just omit the 1K resistor from the mod.
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Last edited by xandrios; Jul 12, 2012 at 01:21 AM.
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Old Jul 13, 2012, 07:35 AM
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Joined Jul 2012
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Quote:
Originally Posted by jay4 View Post
i've built this item and it's real awesome it give me 200A at 13.8 volt for my ham shack equipment. i just add additional fan to make it cooler.


Good afternoon!
You couldn't photograph your device together with the fan?
Whether it is possible to use as a buster for the car?
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Old Jul 14, 2012, 01:58 AM
Lipo Power
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Joined May 2009
299 Posts
Dell A930P-00 930W 77.5Amp

A1, B1, B6 connect to power on....
Now, How to slow down the crazy fan???
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Old Jul 14, 2012, 05:18 AM
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Quote:
Originally Posted by BrushlesHeaven View Post
A1, B1, B6 connect to power on....
Now, How to slow down the crazy fan???
How do you get this to work ive connected A1, B1, B6 but the orange warning light comes up and doesn't fully power on.
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Old Jul 14, 2012, 07:37 AM
Steven
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United States, CT, East Hartford
Joined May 2010
504 Posts
Hey BrushlesHeaven.

Grounding pin B2 should cause the fan to slow down.
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Old Jul 14, 2012, 02:19 PM
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Germany, TH, Hildburghausen
Joined Jul 2012
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low to 80% rpm via potentiometer? would be nice
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Old Jul 14, 2012, 02:29 PM
Steven
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United States, CT, East Hartford
Joined May 2010
504 Posts
Then just use the external pot without the internal 1k resistor.
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Old Jul 15, 2012, 12:37 PM
Steven
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United States, CT, East Hartford
Joined May 2010
504 Posts
I've managed a simple OVP mod for the Dell Poweredge 6650 (ASTN 7000245) PSU that will allow voltage adjustment up to 16V.

This PSU doesn't seem to have a UVP circuit.

The full adjustable voltage range after mod will be from 3V to 16V at 72A.

This will make a great bench PS with these specs.

I will post pics and details later today or tomorrow.
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Last edited by xandrios; Jul 15, 2012 at 07:40 PM.
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Old Jul 15, 2012, 05:56 PM
Use the 4S Luke
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USA, TX, Euless
Joined Aug 2003
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What are the output caps rated for?
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Old Jul 15, 2012, 07:30 PM
Steven
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United States, CT, East Hartford
Joined May 2010
504 Posts
The usual 16V. I'll suggest staying below this of course.

The modded 6650 PSU can actually go past 20V . The output caps look easy enough to replace if necessary.

This may be grounds for a 20V mod.
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Last edited by xandrios; Jul 15, 2012 at 07:42 PM.
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Old Jul 15, 2012, 08:01 PM
Use the 4S Luke
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USA, TX, Euless
Joined Aug 2003
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We wouldn't want to bust a cap.

"This may be grounds for a 20V mod."
If it's needed for some application.
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Old Jul 16, 2012, 08:07 AM
Steven
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United States, CT, East Hartford
Joined May 2010
504 Posts
People were busting caps every day of the week where I grew up. One just missed me by a couple of feet while I was in bed sleeping. Then we got the hell out of there. No joke..
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Old Jul 16, 2012, 07:29 PM
Lipo Power
BrushlesHeaven's Avatar
Joined May 2009
299 Posts
Never mind.... Works for about 10 seconds making 12.7V and than it stops...
Not sure how to make it not to stop.
Also the cooling fan goes 100% and pin 2B to ground is not slowing the fan down, not on this model



Quote:
Originally Posted by BrushlesHeaven View Post
A1, B1, B6 connect to power on....
Now, How to slow down the crazy fan???
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