soundguy

api 2503
« on: June 22, 2004, 08:04:04 PM »
anyone have the color code pinout for the leads on the 2503's we got in the last group order?

thanks

dave

chips are good with dip...


fum

api 2503
« Reply #1 on: June 22, 2004, 08:12:40 PM »
red /brown = primary

orange/yellow = secondary 1

green/blue = secondary 2

violet/gray = secondary 3

This is from the API 312 schematic.

Hope this helps

ju

soundguy

api 2503
« Reply #2 on: June 22, 2004, 08:26:43 PM »
I was looking at that data sheet...  I guess we are to assume they kept the same color coding?

I wish I understand how this worked a bit better.  Ugh, basics...

at 1:1, the primary is reflected at the third winding without a voltage change, right?  But by connecting the first two windings, you get a center tap, a voltage gain and the impedace also changes?

some days I understand this and then the wind blows the wrong way and Im in a cloud, like today...

what are common uses for center taps?


thanks!

dave

chips are good with dip...

CJ

api 2503
« Reply #3 on: June 22, 2004, 08:47:04 PM »
it dosent matter .
its all one quad winding, so all the windings are equal in every respect.
just so long as you get a pair, that is
 :guinness:
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

soundguy

api 2503
« Reply #4 on: June 22, 2004, 08:54:56 PM »
ok chris, can you take red/brown & orange/yellow and use them as a primary and then use green/blue & violet/gray as a secondary?  Would that work?  Am I a retard?  I need to go to transformer school, sh*t.

there will never be a point at which I have learned enough.  Im getting better at dealing with the frustration of being ignorant though.

sh*t...

dave

chips are good with dip...

api 2503
« Reply #5 on: June 22, 2004, 08:55:46 PM »
half past three
http://www.lazpro.com
I reserve the right to not sell to idiots

CJ

api 2503
« Reply #6 on: June 22, 2004, 09:18:22 PM »
Yes, you could wire it like that.
Thats the neat thing, you could also use one of the sec windings to drive a VU meter, or use the amp as a mic splitter, etc.
You can vary you inductances by connectong two windings in series for either/or the pri or sec, many different combinations.
I think the normal hookup is one primary, and three secondaries.
Then you can series two sec windings and use the third for metering, etc.
I don't know if loading down the extra secondary with a vu meter will affect tone or not.
I still have to build mine.

 :sam:
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

soundguy

api 2503
« Reply #7 on: June 22, 2004, 09:27:22 PM »
thanks for the info cj!

you should change your screen name to transformer man or something like that.

dave

chips are good with dip...

fallout

api 2503
« Reply #8 on: June 22, 2004, 09:49:38 PM »
Iron Man!   :twisted:

-Jay

CJ

api 2503
« Reply #9 on: June 22, 2004, 10:00:54 PM »
I thought about iron man, I mean I will be at oz fest, ! :grin:
I don't know what iron man looks like.
So I couldn't concieve an avatar.
still looking for my old Edison avatar.
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html


Plexibreath

    Pleasanton, California (SF Bay Area)
  • Posts: 111
api 2503
« Reply #10 on: June 22, 2004, 10:09:28 PM »
Quote from: "cjenrick"
I don't know what iron man looks like.
So I couldn't concieve an avatar.

There was that album by Queen, I forgot the name of it, but it had a giant robot on the front, that would be a great Iron Man avatar.
Kelley
The beatings will continue until morale improves.

soundguy

api 2503
« Reply #11 on: June 22, 2004, 10:53:24 PM »
dude, Iron Man is the guy on the front of paranoid with the sword and the motorcycle helmet.

doh.

dave

chips are good with dip...

CJ

api 2503
« Reply #12 on: June 22, 2004, 11:06:46 PM »
ummmm, oh yeah, errr
a hut a hut a hut a hut a hut (insert Tony riff here!)

wait, thats Sweet Leaf!
man, how many brain cells did Ozzy take?

no wonder I couldn't remember!
well, i guess i could ask Ethan to edit mi user name
i don't know, what about the "nobody likes him" part of the song?

 :guinness:
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

CJ

api 2503
« Reply #13 on: June 22, 2004, 11:18:11 PM »
oh yeah, watch the phasing on thosw windings
you have to know which way is up
especially if you combine windings
cj
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

soundguy

api 2503
« Reply #14 on: June 23, 2004, 12:42:02 AM »
the dot denotes the positive, yeah?  when combing windings you connect positive to negative, right?

Im looking forward to the day when I can ask real questions...

sigh.

dave

chips are good with dip...

CJ

api 2503
« Reply #15 on: June 23, 2004, 12:47:55 AM »
yes, for series, neg to pos
the dots don't represent a polarity, more of just a referance, start or finish, i don't know which.
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

Eric H

api 2503
« Reply #16 on: June 23, 2004, 01:40:24 AM »
Quote from: "Plexibreath"
Quote from: "cjenrick"
I don't know what iron man looks like.
So I couldn't concieve an avatar.

There was that album by Queen, I forgot the name of it, but it had a giant robot on the front, that would be a great Iron Man avatar.
Kelley


http://www.kellyfreas.com/Home2a.htm#Top

scroll down

A little trivia --that painting was originally the first Astounding Science Fiction cover by The great (and prolific) SF illustrator Kelly Freas (in 1953) --I have a copy of that magazine, and many others.  He (and John Berkey) drew spaceships you wanted to jump on and go.

-Eric

api 2503
« Reply #17 on: June 23, 2004, 01:43:21 AM »
Quote from: "soundguy"
Im looking forward to the day when I can ask real questions...


Yeah, same with me. But for you, if all else fails, you can always post a picture of your pussy. :wink:

Cheers,

elco


 

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