Harpo

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #40 on: April 08, 2011, 05:53:12 PM »
a little edit to your drawing,
whatever pin29 from your secret module name might connect to ....

A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.  -Douglas Adams


r2d2

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #41 on: April 11, 2011, 08:46:52 AM »
Hey Harpo
thanks for post !

it's not a washing machine ....  " ( ;) )

that connector "graphic" is the only one i found inside the eagle  parts database

peace and "diy" for all

« Last Edit: April 11, 2011, 10:17:00 AM by r2d2 »
..... Cracking D.Vader Firewall ...  II-)

Harpo

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #42 on: April 11, 2011, 09:25:09 AM »
that connector "graphic" is the only one i found inside the "e-ag-le"  parts database

Hey r-(8/4)-d-(SQR(7-5)2),
please stop scattering names with hyphens, asterixes, blank spaces, etc. This will only make it unreadable and nearly impossible for the search function to get useful if any results.  ;)
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.  -Douglas Adams

r2d2

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #43 on: April 11, 2011, 10:16:07 AM »
..oops  ,
sorry Harpo !
I thought it was a rule of the forum (as in many others....)
not to "advertise" manufacturer...(not "member" of the forum)

peace!
« Last Edit: April 12, 2011, 01:01:50 PM by r2d2 »
..... Cracking D.Vader Firewall ...  II-)

Igor

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #44 on: August 14, 2011, 04:33:06 PM »
A bit abandoned. Need support here?
http://www.ij-audio.com
(new site hopefully will be up in July)

madreza

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #45 on: September 13, 2011, 07:19:49 PM »
Yep :)
Would a 2x24V 50VA be OK to feed 4 EZ1290 ?
or should I take a 2x25V ( I didn't really get it !!!!  )
Knight 1: We are now no longer the Knights who say Ni.
Knight 2: NI.
Other Knights: Shh...
Knight 1: We are now the Knights who say... "Ekki-Ekki-Ekki-Ekki-PTANG. Zoom-Boing. Z'nourrwringmm.

Igor

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #46 on: September 13, 2011, 08:30:07 PM »
With secondaries connected in parallel, it should be enough for 8-10 Neve'ish pre's.
http://www.ij-audio.com
(new site hopefully will be up in July)

madreza

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #47 on: September 14, 2011, 06:21:49 AM »
Great ! Thanks Igor :)
Knight 1: We are now no longer the Knights who say Ni.
Knight 2: NI.
Other Knights: Shh...
Knight 1: We are now the Knights who say... "Ekki-Ekki-Ekki-Ekki-PTANG. Zoom-Boing. Z'nourrwringmm.

SaMpLeGoD

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #48 on: January 11, 2012, 06:20:42 AM »
If I plan to put the two secondarys of my power transformer in parallel, or using a center tapped one (25 - 0 - 25) should I need to connect ~24.2 and ~24.A right????
Thanks
Keep on Rockin' and DIYing!!!!

Igor

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #49 on: January 23, 2012, 12:23:38 PM »
Use two separate secondary's, not centertapped.

By-the-way......
http://www.groupdiy.com/index.php?topic=47195.0
http://www.ij-audio.com
(new site hopefully will be up in July)


kevinkace

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #50 on: May 18, 2012, 02:42:57 PM »
Would this PSU work for powering the IJ Audio Rack-It kit?

Looking to build a 51x rack/pres (waiting on the PSU from CAPI), but would like something I can use to test each pre and practice on before the working on the real deal. :)

zayance

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #51 on: May 19, 2012, 06:28:59 AM »
Would this PSU work for powering the IJ Audio Rack-It kit?

Looking to build a 51x rack/pres (waiting on the PSU from CAPI), but would like something I can use to test each pre and practice on before the working on the real deal. :)

No you need a +/- power supply, dual voltage rail, check mnats white market for example, he has the right PSU PCB's. Just need to make a +\-24V supply to feed the rack-it.
Rack-it doesn't provide the 48v if i'm correct? So you'll need that as well, there are options on white market from other sellers....
« Last Edit: May 19, 2012, 06:39:51 AM by zayance »

RuudNL

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #52 on: September 24, 2012, 05:06:14 AM »
Because I needed +48 V. phantom power, i decided to build only the lower part of the circuit with the TL783.
Unfortunately I found that the regulation is not very good.
Looking at the data sheet of the TL783, I found that the minimal load current is 15 mA.
In the schematic the load current is only 48 / 7516 = 6,38 mA. (Neglecting the current through the Adj pin.)
Also I am a bit worried about the dissipation in the 7K32 resistor. (1/4W)
The voltage over this resistor is 48 - 1.27 = 46.73 V.  And 46.73 * 6.38 mA = 298 mW...
There is a solution for every problem!

http://www.vansteenisaudio.nl

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #53 on: January 16, 2021, 12:22:17 PM »
I still have a pit of these pcbs.
But no schematics.
I wanna use a pcb to make a 40v dc source.

Thx,

Dennis

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #54 on: April 03, 2021, 04:46:56 AM »
Does someone has the schematic for this PSU pcb ? Links are dead and I've got one that I'm gonna use to power two EZ1084 eq.

abbey road d enfer

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #55 on: April 03, 2021, 05:12:27 AM »
The schematic is probably very easy to trace.
I f you don't feel up to the task, take good pictures of both side of the PCBs, someone will do it for you.
Who's right or wrong is irrelevant. What matters is what's right or wrong.
Star ground is for electricians.

scott2000

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #56 on: April 03, 2021, 08:30:43 AM »
Maybe this?

Re: Phantom and 24 for various oldies.... 2448 Power supply PCB!
« Reply #57 on: April 03, 2021, 08:43:42 AM »
That seems to be the one... Thanks dude !


 

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