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diyAudio Moderator

Join Date: May 2003
Location: Palatiw, Pasig City
Quote:
 Originally Posted by nazirdigi hi tony thanks for the reply, i cant find 1 3/4 center leg lamination, they have 3.8cm(1 1/2inch) center leg,so transformer height is 3.75inch. is this ok tony for my post no 198? pls give the specs.

1.5 in centre leg x 3.75 inch stack....
VA = (1.5 x 3.75 x 5.58)^2 = 985.2 volt-amperes
primary current = 4.28A
primary turns = 1750/(1.5x3.75) = 311 turns #19 awg.
secondary turns = 42 turns #16 awg
you need 4 coils of 42 turns, in series to get 60-30-0-30-60.

 26th May 2012, 01:20 PM #202 diyAudio Member   Join Date: Oct 2009 thanks tony for reply, so in this calculation, i can get 5 ampere. am i correct tony?
diyAudio Member

Join Date: Oct 2009
hi tony is this correct or not?

total secondary voltage is 120v ac(60-30-ct-30-60), 10ampere. so 1200watts.(VA).

if i select 1444w, size lamination (3.8cm-10cm) in the below table.

turns per volt 1.1.
for 10ampere table shows 13awg so 120*1.1=132 turns for secondary.

for primary 1200w / 235=5.106ampere. so 235*1.1=258.5turns.
16awg 5.106ampere
Attached Images
 ampere and gage awg.jpg (96.2 KB, 246 views) transformer lamination size and watts and per volt.jpg (137.4 KB, 243 views)

 26th May 2012, 10:24 PM #204 diyAudio Moderator     Join Date: May 2003 Location: Palatiw, Pasig City all depends on the quality of the core material you actually uses...M6 will give you more power than most non goss irons... __________________ http://www.elab.ph/forum/index.php?topic=32688.0
 27th May 2012, 01:22 AM #205 diyAudio Member   Join Date: Oct 2009 thanks tony for the reply. can u tell me how to identify the wire is single coated or double coated?
diyAudio Moderator

Join Date: May 2003
Location: Palatiw, Pasig City
Quote:
 Originally Posted by nazirdigi thanks tony for the reply. can u tell me how to identify the wire is single coated or double coated?
you have to trust your supplier, but in general, double coated wire will be thicker...depends on the manufacturer...

 27th May 2012, 10:27 AM #207 diyAudio Member   Join Date: Oct 2009 thanks tony for the reply.
diyAudio Member

Join Date: Feb 2008
HELLO

Hi Tony
greetings thank you for guiding me to make my torriod
OD 21cm ID 10.5 cm height 10cm
primary 13 swg
secondary 11 swg
ac 50 0 50 and 60 0 60
apex audio your softstart is good have to change 47 ohms to 50 watts
nice softstart
warm regards
andrew lebon
Attached Images
 P1010055.jpg (157.5 KB, 202 views)
__________________
[image][/image]"It's Better to try and fail than to never know and always wonder"

 7th June 2012, 07:49 AM #209 diyAudio Moderator     Join Date: May 2003 Location: Palatiw, Pasig City @andrewlebon , you are welcome, how many kilos did the final traffo weigh? good job..... __________________ http://www.elab.ph/forum/index.php?topic=32688.0
 7th June 2012, 07:51 AM #210 diyAudio Moderator     Join Date: May 2003 Location: Palatiw, Pasig City this is a double screened traffo i built for an upcoming 6SN7/6CG7 aikido line amp build.... __________________ http://www.elab.ph/forum/index.php?topic=32688.0

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