Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-03-2012, 06:19 PM   #1
Rivet Master
 
aircooled4's Avatar
 
1971 31' Sovereign
1967 22' Safari
1958 22' World Traveler
Pardeeville , Wisconsin
Join Date: Sep 2008
Posts: 569
Blog Entries: 6
What is a Univolt? :-)

I know WHAT a univolt is, I know what they do, and i have a very good idea of HOW they do it. Can someone possibly tell me how a Univolt is different than say, and Astron RS20, 20amp power supply? They seem to me to function exactly the same and serve the same purpose...
__________________

__________________
Jay (KB8VMO)
WBCCI #10917
AIR #32349
TAC #WI-2
aircooled4 is offline   Reply With Quote
Old 04-03-2012, 06:41 PM   #2
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,139
Images: 2
Blog Entries: 5
Ok. Here's an educated guess. The Univolt is more like a battery charger than a power supply. Especially if the power supply is a regulated type. The power supply puts out a constant and fixed voltage up to it's rated capacity. Whereas a battery charger (at least a good one) will vary the voltage depending on the state of the battery being charged.
In my opinion the Univolt is a crude battery charger and is noted for cooking batteries.
The modern converters used in RV's are intelligent to a point. As the converter sees the state of the battery change it adjusts itself accordingly. Whereas a power supply does not have that capability. Typically regulated power supplies are used where a fixed voltage level is required, in electronic circuits for example.
A power supply would not be a good choice for charging a battery.
__________________

__________________
Knowledge: "A gift to be shared. A treasure to receive."
TG Twinkie is offline   Reply With Quote
Old 04-03-2012, 07:06 PM   #3
Rivet Master
 
aircooled4's Avatar
 
1971 31' Sovereign
1967 22' Safari
1958 22' World Traveler
Pardeeville , Wisconsin
Join Date: Sep 2008
Posts: 569
Blog Entries: 6
Thanks that kind of explains it...We're restoring a 67 Safari...Today i removed the univolt and was wondering how it was different than a power supply and different than a battery charger...
__________________
Jay (KB8VMO)
WBCCI #10917
AIR #32349
TAC #WI-2
aircooled4 is offline   Reply With Quote
Old 04-03-2012, 07:09 PM   #4
Rivet Master
 
vswingfield's Avatar
 
1983 34' Excella
1967 24' Tradewind
Little Rock , Arkansas
Join Date: Nov 2006
Posts: 3,771
Images: 32
Quote:
Originally Posted by aircooled4 View Post
Thanks that kind of explains it...We're restoring a 67 Safari...Today i removed the univolt and was wondering how it was different than a power supply and different than a battery charger...
After removing the one in my Trade Wind, I would say that a Univolt is more suited to marine use.

It would make a better boat anchor.
__________________
Vaughan
vswingfield is offline   Reply With Quote
Old 04-03-2012, 07:20 PM   #5
Rivet Master
 
Alumaholic's Avatar

 
1966 24' Tradewind
Albuquerque , New Mexico
Join Date: Nov 2005
Posts: 1,751
Images: 33
I believe much of the weight is copper.
You may want to recycle.
I didn't think of this until I used my old ones for boat anchors. Oops.
__________________
Ken L
1966 Tradewind 24
2007Chevy Silverado 2500 HD Duramax/Allison
Four Corners Unit WBCCI #8654
Alumaholic is offline   Reply With Quote
Old 04-09-2012, 11:03 PM   #6
Rivet Master
Commercial Member
 
New Borockton , Alabama
Join Date: Sep 2002
Posts: 1,288
Images: 21
Quote:
Originally Posted by aircooled4 View Post
They seem to me to function exactly the same and serve the same purpose...
That couldn't be more true.
__________________
Randy...Converters, Inverters, Trimetric, Surge Protectors, Zamp Solar, AGM Batteries
www.bestconverter.com
68 Overlander is offline   Reply With Quote
Old 04-09-2012, 11:49 PM   #7
Maniacal Engineer
 
barts's Avatar
 
1971 25' Tradewind
Menlo Park , California
Join Date: Jan 2010
Posts: 1,223
Images: 1
Blog Entries: 4
I believe a Univolt is actually a ferroresonant transformer.

They are old-school technology, but are generally quite robust and resistant to variations in input voltage, power spikes, etc.

They make a fair amount of noise humming; I'm going to use my old one as a 30A battery charger in the garage.

- Bart
__________________

__________________
Bart Smaalders
Menlo Park, CA
http://tinpickle.blogspot.com
http://smaalders.net/barts
barts is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
What did a Classic Motorhome Cost New? Keyair Classic Motorhomes 42 08-12-2012 07:39 PM
Window gone - what happened? jgerardi Windows, Doors, Locks & Vents 17 04-05-2012 07:55 AM
HELP! found '68 Land yacht is this good price? womanofsteel Trailer Values 7 04-03-2012 05:38 PM
What is it - pressure reducer? 68ambassador Fresh Water Systems 5 04-03-2012 08:42 AM
Pump is pumping, but! AWCHIEF Fresh Water Systems 10 04-02-2012 06:02 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:04 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.