Become a Site Supporter and Never see Ads again!

Author Topic: Can you power a ua-5 on 12 volt sla??  (Read 4529 times)

0 Members and 1 Guest are viewing this topic.

Offline VA_TAPER

  • (0)
  • Taperssection Member
  • ***
  • Posts: 903
  • Gender: Male
  • SPA AKG C33E->Hamptone HVTP2->Tascam DV-RA1000 DSD
Re:Can you power a ua-5 on 12 volt sla??
« Reply #15 on: January 26, 2004, 08:18:00 PM »
fwiw I was poking around the power input section of the ua-5 today and it uses a Rohm BP5220 DC-DC converter to provide 5v internally.  That thing is rated to handle anything from 8 to 38 volts.

Not that I'd recommend using 38 (heat generation?) but you ain't gonna blow anything up with 12 volts.



Now if you could find out how many amps the UA-5 draws from the DC-DC converter at 5v and check the spec of the Rohm to see how much it can provide it might be possible to jump an additional 5v out from the converter, put a jack on the back of the UA-5 and then JB3 users have a regulated 5v source to run off of when their using a UA-5.  Call it the UA-5 dklein mod

peace, chris
« Last Edit: January 26, 2004, 08:18:40 PM by VA_TAPER »
My recordings and transfers at archive.org: http://www.archive.org/search.php?query=berryman%20AND%20mediatype%3Aetree%20AND%20collection%3Aetree

“Those who cast the votes decide nothing. Those who count the votes decide everything.”  Joseph Stalin

Offline dklein

  • (0)
  • Taperssection All-Star
  • ****
  • Posts: 1184
  • Gender: Male
Re:Can you power a ua-5 on 12 volt sla??
« Reply #16 on: January 26, 2004, 10:13:07 PM »
Hey - I like your thinking!  That's fucking brilliant.  Unfortunately the converter is only spec'd to 1 amp - probably not enough for both.

It generates a little heat just running the UA-5 with a 9.6v - not sure what it would do with more load.  The JB3 pulls over 0.8 A when the hard drive writes and well over 1 A when it boots up.  And any time it doesn't get adequate voltage/current, it just locks up.

Here's the converter specs if you want to check it out


KM 184 > V2 > R4
older recording gear: UA-5  / emagic A62 / laptop / JB3 / CSB / AD20 / Sharp MT-90 / Sony MDS-JE510
Playback: Pioneer DV-578 > Lucid DA 9624 >many funny little british boxes > Linn Isobarik PMS

Offline Lee

  • Team Bama
  • (1)
  • Needs to get out more...
  • *****
  • Posts: 4868
  • Gender: Male
  • "I hate the f***in' eagles, man!"
Re:Can you power a ua-5 on 12 volt sla??
« Reply #17 on: January 26, 2004, 11:30:09 PM »
would it be possible to swap the converter out for one that can handle a higher amperage?  What's the internal draw on the UA-5?
Denon AVR 3808ci > Paradigm Reference Studio 20 + Velodyne DLS 3750

Offline dklein

  • (0)
  • Taperssection All-Star
  • ****
  • Posts: 1184
  • Gender: Male
Re:Can you power a ua-5 on 12 volt sla??
« Reply #18 on: January 27, 2004, 12:47:06 AM »
would it be possible to swap the converter out for one that can handle a higher amperage?  What's the internal draw on the UA-5?

You'd need something that would fit in there (on the board).  Might be tough.  I also noticed that it comes after a DC line filter, so they took great care to make sure the power is clean before it hits the electronics.  You could introduce noise by connecting another device after the filtering.  

Probably not worth the effort.  Easier to just split power from your source.  I've got a little setup that runs the JB3 and UA-5 from a single 9.6v - straight 9.6 for the UA-5 and a regulator for the JB3 (I've used both a 5v reg and a car adapter reg set to 4.5v
KM 184 > V2 > R4
older recording gear: UA-5  / emagic A62 / laptop / JB3 / CSB / AD20 / Sharp MT-90 / Sony MDS-JE510
Playback: Pioneer DV-578 > Lucid DA 9624 >many funny little british boxes > Linn Isobarik PMS

 

RSS | Mobile
Page created in 0.034 seconds with 33 queries.
© 2002-2020 Taperssection.com
Powered by SMF