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Old 10-12-2004, 08:49 AM   #15
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Does anyone know what

Originally Posted by markparker22
Here is a link to Inteli-Power 9100 Converters which has a link to a lay-man's tutorial on the various types of converters:
Airstream is using now? If they're still using the UNIVOLT does anyone know why?

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Old 10-12-2004, 10:19 AM   #16
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Mine hums too. Funny how you really don't notice things like that during the day but thay become an annoyance at night.
During the day other noises fill the air and in effect they drown out the ever-present hum of the Univolt.
What's the solution that we can all live with? I turn on the radio at night to a station that plays soft music without too many interuptions or put on a CD.
Once asleep that hum has no effect...............................

Just adding my 2 worth

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Old 10-12-2004, 10:23 AM   #17
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We run our fan at night, the one in the bathroom. It covers any univolt noises.
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Old 10-12-2004, 10:25 AM   #18
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Originally Posted by guy99
Airstream is using now? If they're still using the UNIVOLT does anyone know why?
All the new units I saw at the show last year had Parallax converters.
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Old 10-12-2004, 10:44 AM   #19
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Originally Posted by drivo
Read your thread with interest. Just purchased a 1976 Tradewind and was wondering about the hum. What newer units do you recommend and is it a difficult task to replace it?

Thanks for your time

It is not difficult to replace an old Univolt with the newer switched mode style chargers. One for one swap in my book, but I work with it every day. A little thought and anyone should be able to perform the replacement.
I used the Intellipower 9100 with the Charge Wizard, 65amps of smart charging.
Go to their web site and look around.

It is stone quiet unless the fan is on and the fan only comes on under very high load situations.

I noticed others have said their Switched Mode Chargers are making noise. If so, they should have it looked at. The only thing you should hear is the fan.

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