[QuadList] Magni MM-400 Elpac Elpac! need further info

[COURYHOUSE at aol.com]

The ELPAC  with   +5 2A , +12 1.5A   -12  .5A  that we  have  should be ok 
to test it  with then  as  the 5V is a little higher amperage than yours 
that is operation.... a  little higher..  but  yes if it  runs warm  a good 
idea to  replace!
 
.
 
Larry - Many many  thanks  for  you help on the power supply  data! 
 
 
Thanks,

Ed Sharpe, Archivist for SMECC 

See the Museum's Web  Site at _www.smecc.org_ (http://www.smecc.org/) 







No, Ed, I got the MM-400 here mounted inside a RCA TR-70c quad  VTR. It is 
hooked up to the machine's supplies.

I removed it and used a workbench supply to measure the current  
consumption with. 
There is no name or data on the bench supply I am using here. It is a  
common, general purpose, open frame switching supply. 
One detail I noticed is this one is probably not big enough in the +5v  
department, it got pretty hot after a few minutes, but didnt go up in  
smoke.(yet)
I think I would suggest  trying to find one with  about a 5-6 Amp rating on 
the +5v output, and maybe a 1-2 Amp rating on the +-  12v supplies. 
I had tried using a 3 amp linear for the +5v before, but without much  
luck. I guess the inrush current is too much load and causes the regulator to  
shutdown(protect).
Hope this helps! 
larry 
LE Odham 
Engr/Tech 
TAMIS Archive 
Knoxville, Tennessee. 
 
____________________________________
From: COURYHOUSE at aol.com
To:  quadlist at quadvideotapegroup.com
Sent: Saturday, November 26,  2011 7:00:24 PM
Subject: Re: [QuadList] Magni MM-400  Elpac  Elpac! need  further info

that is GREAT Larry!   thanks  much!  now  we know the draw,,,,,  on the 
supply itself  are there  specs  of the ma  your supply puts out and a mfr 
name??
 
 
Ed#
 
 
 
In a message dated 11/26/2011 11:52:37 A.M. US Mountain Standard Tim,  
leodham at centurylink.net writes:

Ed, 
Will this help?: 
I took the plug apart on the MM-400 here and measured the current(s) with  
a Simpson 260 analog VOM 
+12v= 370ma 
+5v  = 1.81 Amps 
-12v = 300ma 
Larry Odham 
Engr/Tech 
TAMIS archive 
Knoxville, Tennessee.

 
____________________________________
From: COURYHOUSE at aol.com
To:  quadlist at quadvideotapegroup.com
Sent: Friday, November 25,  2011 2:38:14 PM
Subject: Re: [QuadList] Magni MM-400  Elpac  Elpac! need  further info


 
if you  have   one of these  with supply please  need  name and  part  #  
to compare and amperages
 
Ed#
 
In a message dated 11/22/2011 3:47:45 P.M. US Mountain Standard Time,  
COURYHOUSE at aol.com writes:

Re: [QuadList] Magni MM-400  Elpac Elpac!
 
what are the currents   on your oversupply   I  went out and  triaged  some 
of the  influx here that the  magni was in and  found.... ELPAC  with what 
seems to be the  same connector and  +5 2A , +12 1.5A   -12 .5A
 
the elpac# is WRI3031 ( the WRI are all alphas   the 3031  is all numeric.  
 says... output 30W
 
is this  the  one!?  if  so we  know   what to look for on ebay  to make 
other magnis work!
 
 
ed sharpe archivist for  smecc








 
Thanks,

Ed Sharpe, Archivist for SMECC  

See the Museum's Web Site at _www.smecc.org_ (http://www.smecc.org/) 

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