[ARC5] Fw: ARC-5 AC Power Supply solutions

[Henry Mei'l's]

I thought we are talking about a transformer with two separate 115v 
windings -- if so what's
the real difference between this PS application and conventional power 
transformers having
separate HV and filament windings - except that this unit may not have 
sufficient winding isolation if one 115V winding
is being used to feed a FW rectifier -- has anyone, at all, been suggesting 
rectifying directly
from the ac line? Actually all this is about as conventional and basic as 
you can get.
I'd have discussed this with you off list but my mails still bounce unless I 
use one of
my other email addresses.

Henry


----- Original Message ----- 
From: "J. Forster" <jfor at quik.com>
To: "Henry Mei'l's" <meils at get2net.dk>
Cc: <arc5 at mailman.qth.net>
Sent: Tuesday, February 01, 2011 4:10 PM
Subject: Re: [ARC5] Fw: ARC-5 AC Power Supply solutions


> No. The cleverness of the post was using one 115 V primary winding as an
> input, the other half as an isolated secondary (with a FW bridge). FW
> rectified wit a C input filter will give you 160-180 V DC.
>
> The scheme isolates the DC from the AC. Rectifying the line w/o isolation
> is a VERY BAD idea, IMO.
>
> -John
>
> =============
>
>
>> ----- Original Message -----
>> From: "Henry Mei'l's" <meils at get2net.dk>
>> To: <jfor at quik.com>
>> Sent: Tuesday, February 01, 2011 4:04 PM
>> Subject: Re: [ARC5] ARC-5 AC Power Supply solutions
>>
>>
>>> John
>>>
>>> Wouldn't Jess be best off using the full winding either full-wave via
>>> the
>>> center tap or a diode bridge arrangement
>>> across the full winding, DC output being fed to voltage-dividing load
>>> resistors, thus using the full 115v winding?
>>>
>>> Winding isolation could easily be tested, by several methods.
>>>
>>> Henry
>>>
>>> ----- Original Message -----
>>> From: "J. Forster" <jfor at quik.com>
>>> To: "David Stinson" <arc5 at ix.netcom.com>
>>> Cc: <arc5 at mailman.qth.net>
>>> Sent: Tuesday, February 01, 2011 3:51 PM
>>> Subject: Re: [ARC5] ARC-5 AC Power Supply solutions
>>>
>>>
>>>> Another consideration is isolation between halves of the primary. It
>>>> might
>>>> not be all that good.
>>>>
>>>> -John
>>>>
>>>> ===============
>>>>
>>>>
>>>>>
>>>>> ----- Original Message -----
>>>>> From: "Jess Lewis" <kr4oj at bellsouth.net>
>>>>> Subject: [ARC5] ARC-5 AC Power Supply solutions
>>>>>
>>>>>>Not sure it is OK to post this sort of info here, but they have 3
>>>>>>left...
>>>>>>E-Bay sale # 110638420067
>>>>>
>>>>> Perfectly OK, Jess, and very helpful.
>>>>> Thanks for the pointer!
>>>>> 73 Dave S.
>>>>>
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