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

[L.E. Odham]

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. 

----- Original Message -----


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. 



----- Original Message -----




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: 
<blockquote>

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 
  
  
  




</blockquote>

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