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Old 15th February 2011, 05:59 AM   #81
Roushon is offline Roushon  India
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Join Date: Sep 2004
Location: Mumbai (Bombay)
Hi Aucosticraft, I would like to use the choke in a
mains filter circuit suggested to me by Mooly as in the
following site.

Audio Mains Filter DIY | DMS Audio

Also the same choke will be used on the ac sec out
of a transformer (15vac) for a power supply of a
phono preamp.

Thanks again for your help
Roushon.
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Old 16th February 2011, 07:22 AM   #82
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I have PM you.... pls check
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Old 17th February 2011, 08:37 PM   #83
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I replied your pm did you get it? if not pls check the settings.
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Old 13th March 2011, 02:06 PM   #84
viki_v2 is offline viki_v2  India
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Guys does any one know where to get toroidal ferrite cores for Smps in Mumbai.
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Old 13th March 2011, 03:34 PM   #85
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Pick up faulty / discarded PC smps units. Must be dirt cheap. They have toroidal ferrite transformers in them. You may have to make a test coil on it first before deciding what turns you will have to actually use.
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Old 13th March 2011, 05:09 PM   #86
viki_v2 is offline viki_v2  India
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Pc smps wont work i read it on another forum, I need 4.5cm Dia core for dc-dc smps.
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Old 14th March 2011, 05:56 AM   #87
Roushon is offline Roushon  India
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Location: Mumbai (Bombay)
Default toroidal ferrite

Ask CK electronics, 13,Old Hanuman Bldg, Kiln Lane Off
Lamington Road. The guy gave me many good advices.

Also I remember going to a shop for toroidal transformer
and saw he was dealing with toroidal ferrite. Do not
remember the shop name, but it is on the first floor of the
building exactly opposite Chandratronics, Chunam lane.

Or you can ask Jehangir in the Disco winding, address is
in post number 77 in this thread.

Hope it helps...
Roushon.
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Last edited by Roushon; 14th March 2011 at 05:59 AM.
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Old 18th March 2011, 02:57 PM   #88
viki_v2 is offline viki_v2  India
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hello,
I am getting amp chassis made from a local metal sheet worker.Front and back will be of 6mm aluminum, rest of the body of 1.5mm ms sheet

I need some final things to complete.
Potentiometer for input selection and volume.
Good quality terminals for Signal input and speaker output to be attached on backplate.

Does any one have pcb layout for multiple signal inputs.
I am looking for some good tube preamp design.
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Old 21st March 2011, 11:14 AM   #89
Roushon is offline Roushon  India
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Join Date: Sep 2004
Location: Mumbai (Bombay)
Default Polypropylene capacitor

Found a source for high voltage capacitors of X type,
Y type and polypropylene:

Tejus Electronics
10, Ganga, Tara Temple Lane
Off Lamington Road
tel 23882350

Roushon
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Old 31st March 2011, 07:28 AM   #90
Roushon is offline Roushon  India
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Join Date: Sep 2004
Location: Mumbai (Bombay)
Default JPED Electronics, Mumbai

I am very glad to inform my fellow hobbyists in
Mumbai (India) the following suppliers of parts:

Mr. Naresh Nayak
J.P. Electronic Devices (India) Pvt. Ltd.
Vikroli, Mumbai-400079
tel. 25785099

I just got some Murata Chokes and some 3amp Schottky
diodes from them delivered at my home. They were
helpful to get the chokes from Singapore although they do
not deal with it. They have warehouses in Singapore and
Hong Kong. So you can contact Mr. Nayak and even
tell my name `Roushon' that I referred. My only
intention is to help my friends here. I do not intend to get
any special treatment from them for this referral ( I do not need also).

In the beginning they were not at all interested in
taking my order, but some more emails from my side
changed their mind.

So go ahead and order any exotic parts you need....

Happy ordering...
Roushon.
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