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I was thinking about something similar but on a smaller scale. Perhaps
Siamese SB-220s with paralleled power supplies via HV wiring. One power
suppliy augmenting the other with additional current available to the unit
transmitting. It seems to me that this plan would provide additional power
availability without problems from over voltage.
Best regards,
Bob Hutchinson, N5CNN
Bhut@nol.net
-----Original Message-----
From: Steve [mailto:sbookout@mnsinc.com]
<mailto:[mailto:sbookout@mnsinc.com]>
Sent: Sunday, September 13, 1998 4:15 PM
To: bhut@nol.net; amps@contesting.com
Subject: Re: [AMPS] Augmenting SB-220 power supply
Hello Bob,
I would think it is perfectly do-able.
W3LPL, a super M/M contest station in MD, has ONE, really MASSIVE
xformer/pwr supply providing all the HV for 5 different 3-1000 home brew
amps, which all run at the same time.
There may be some secrets to doing this other than having enough total
current capability, but I'm not aware of them.
73 de Steve, NJ4F
At 12:18 PM 9/13/98 -0500, Bob Hutchinson wrote:
>
>I notice that Peter Dahl has for sale replacement outboard transformers for
>the SB-220 that produce twice the normal 1A. current. The prices are not
>exactly Coke money. I have a couple of SB-220s and am about to come into
>more parts, including transformers.
>
>Is it feasible to improve of the current capability of the SB-220 power
>supply by connecting two of the standard SB-220 transformers in parallel?
>Perhaps with an outboard transformer augmenting the inside transformer.
>Would this technique provide a more robust power supply input capability?
>What would the ramifications to the rectifier, filter and other components
>be?
>
>Bob Hutchinson N5CNN
>bhut@nol.net
>
>
>
>Attachment Converted: "C:\ATTACH\winmail4.dat"
>
**** Please note new Email address...steve@1bigred.com *****
***** Will be discontinuing this one shortly *******
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