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Old 3rd December 2002, 12:29 PM   #1
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Default Anyone tried these inductors?

Hi,

These inductors seems to work good I think in a power supply
Anyone got an opinion about these coils?
These are originally used for speakers.

http://www.speakerenco.nl/TRITEC-SPOELEN.htm
again just in case..;-)

Tritec coils
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Old 3rd December 2002, 12:46 PM   #2
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blank,

Ive looked at them for my upcoming Aleph-X but think theyve got a bit too much dc-resistance (0.24R), are a bit too big and probably a waiste of money for a Pi-filter. (2.2mH)

After a bit of searching I think Ill buy some "torobar" chokes (also from Intertechnik) wich have much lower dc-resistance (0.12), a saturation current of almost 11A, are a lot smaller and only cost a fraction of the tritecs.

william
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Old 3rd December 2002, 01:50 PM   #3
akira is offline akira  France
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How did you find the saturation current on the page of Intertechnik ?

Akira
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Old 3rd December 2002, 01:58 PM   #4
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I looked at http://www.intertechnik.de/cgi-local...att.pl?1340580 and there are the data of the torobars

william
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Old 3rd December 2002, 02:21 PM   #5
akira is offline akira  France
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Disculpe Sorry Entschuldigung. Ich hatte es nicht gesehen.

Thanks for the link. Interesting supplier.
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Old 2nd January 2003, 06:27 PM   #6
Lucas_G is offline Lucas_G  Netherlands
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Default Intertechnik

Hi,

I am using Intertechnik I-Point Coils with 3.9 mH and 0,16 Ohm resistance...

http://www.schuro.de/Downloads/PDF-P...Punkt_I_BR.PDF

They are cheap (about 8.00 = $ 8.00) and according to Intertechnik they can handle high amounts of current without satturation. They are a bit long though...

Greetings,

Lucas.
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Old 2nd January 2003, 07:40 PM   #7
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Quote:
Originally posted by wuffwaff
blank,

After a bit of searching I think Ill buy some "torobar" chokes (also from Intertechnik) wich have much lower dc-resistance (0.12), a saturation current of almost 11A, are a lot smaller and only cost a fraction of the tritecs.

william
Hi william,
the Torobar chokes have a lower dc-resistance as 0.12, dont they?
Have a look
http://www.schuro.de/torobar.htm
Or am i wrong?
Regards,
Smithers
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Old 2nd January 2003, 08:50 PM   #8
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Quote:
Originally posted by Smithers


Hi william,
the Torobar chokes have a lower dc-resistance as 0.12, dont they?
Have a look
http://www.schuro.de/torobar.htm
Or am i wrong?
Regards,
Smithers
I think they made some error. On the Intertechnik site you see other DCR values. E.g 0.12 ohm for 2.2 mH.
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Old 9th January 2003, 11:52 AM   #9
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Hi,

For my AlephX-200 I want to use this schematic.

http://web.vip.hr/pcb-design.vip/power-2.html

Of course the values in the schematic are not correct for a AlephX so here are the values that I am going to use:

Voltage rails: +31V/-31V
Bias current: 8A
Capacitors: 8x47000uF
coils: 3.9mH

For the choise of the 3.9mH coils I looked at the torobars and the tritecs. The torobars are cheaper and have a lower resistance but the only thing that worries me is the saturation current. According to the specs. the torobars have a saturation current of 11.5 amps. According to the specs. the tritecs don't have a saturation current.

How important is the saturation current for coils when using them for a psu? And can I use the torobar coils for my psu?
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Old 9th January 2003, 02:16 PM   #10
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Mensing,

8A is less than 11 so it should be ok to use the torobars. (I will also use them for my X).

Question,

why do you choose 3.9mH instead of 2.2mH?

william
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