Aleph 5 CLC inductor help. - diyAudio
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Old 1st December 2014, 07:03 PM   #1
edd9000 is offline edd9000  United Kingdom
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Default Aleph 5 CLC inductor help.

I purchased these chokes to use in the power supply of my Aleph 5 monoblocks build 7448258022 Wurth Electronics | Mouser

I have just realised they are 2x2.2mh, I have 4 of them, but I am not sure how best to use them. Should I just use one per power supply with each rail using half of the choke? Or each rail using the choke in parallel or series to itself.

Thanks.
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Old 1st December 2014, 08:18 PM   #2
Zen Mod is offline Zen Mod  Serbia
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that's nuttin'

good for small current , with substantial DC they're piece of gunk wire

in fact , these are AC line chokes

read datasheet : http://www.mouser.com/ds/2/445/7448258022-71078.pdf
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Old 1st December 2014, 09:09 PM   #3
edd9000 is offline edd9000  United Kingdom
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Oops, wrong thing then. Since I bought this project half started I have not done as much research as I normally would do. They were rated at 8amps DC so figured I was looking at the right things.

What am I looking for then? Does it need to be Air core or is Iron core ok, with 1 on each rail what amp rating/wattage should I be looking for.
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Old 2nd December 2014, 06:19 AM   #4
Zen Mod is offline Zen Mod  Serbia
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air core or hefty iron core

if iron , shoot for more than 2mH , also being sure that choke is declared for at least twice DC Iq
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Old 2nd December 2014, 06:46 AM   #5
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As Zen MOd has said, yours are for RF interference suppression.

If you look for air cored loudspeaker crossover coils you will be closer to what you actually need.

These are 2.2mH 10A coils.
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Last edited by KatieandDad; 2nd December 2014 at 06:49 AM.
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Old 2nd December 2014, 09:33 AM   #6
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Would the Hammond 156B or 159ZL be suitable?

Hammond Mfg. - D.C. Filter Chokes - (153 - 159 Series)

Thanks,
Dennis
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Old 2nd December 2014, 09:55 AM   #7
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Yes, those are designed for DC power supplies.
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Old 2nd December 2014, 10:14 AM   #8
AndrewT is offline AndrewT  Scotland
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Start saving up the transformers from broken microwave ovens.

The EI is easily split since there is no interleaving. Then one can add a thin spacer (0.5mm to 1mm) between the E & I to create a gapped core. Ideal for big chokes with a high DC capability.
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Old 2nd December 2014, 10:28 AM   #9
edd9000 is offline edd9000  United Kingdom
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Thanks for the help. I just got a little ahead of myself.

I will probably just wind my own air core inductor, 14awg should have the power handling needed.
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Old 2nd December 2014, 10:49 AM   #10
AndrewT is offline AndrewT  Scotland
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don't wind it.
Buy a reel of enameled copper wire from SWC (Scientific Wire Company). Their retail division has a new name.
Use the plastic reel as delivered.
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Last edited by AndrewT; 2nd December 2014 at 11:05 AM.
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