[R-390] R390A Audio Solution

David Wise David_Wise at Phoenix.com
Thu Jan 3 19:55:28 EST 2013


I kept the 3DW7 quiet by not generating hash in the first place.
The German guy who was (is?) selling another SS 3TF7, I think he's doing what you say.

Dave

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net] On Behalf Of Drew P.
Sent: Friday, December 28, 2012 9:45 PM
To: r-390 at mailman.qth.net
Subject: Re: [R-390] R390A Audio Solution


Chuck "60 Hz" Rippel wrote (sorry Chuck, I couldn't resist):

> There are already spare parts issues with PTO's and power 
> transformers.   I doubt that Hammond will make an R390A 
> power transformer; perhaps it will be Walt or someone 
> like him that will come up with a workable solution 
> benefiting us all.

I can envision a Dave Wise design which puts an off-the-line 
switchmode-type power supply inside a gutted transformer can, 
along with a metric buttload of caps and inductors to keep 
the hash IN the can.

Drew



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