[Milsurplus] Attention Smart People... more.

[J. Forster]

Yes,

-John

============

>
> Re: DANGER
>
> I believe he is speaking about the DANGER of running
> the doubler DIRECTLY from the 120 or 240 VAC line.
>
> The schematic he shows of the circuit only includes
> the SECONDARY of the power transformer.
>
>
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~ 73 - Mac, K2GKK/5 ~
> ~ (Since 30 Nov 53) ~
> ~ Oklahoma City, OK ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>
>
>> Date: Tue, 3 Aug 2010 09:50:17 -0700
>> From: jfor at quik.com
>> To: arc5 at ix.netcom.com
>> CC: milsurplus at mailman.qth.net
>> Subject: Re: [Milsurplus] Attention Smart People... more.
>>
>> IMO, the circuit, if operated w/o the floating transformer winging, is
>> very dangerous.
>>
>> -John
>>
>> ============
>>
>>
>>
>> > Please take a look at this full-wave doubler circuit:
>> >
>> > http://www.kwarc.org/bulletin/99-04/tech_corner.htm
>> >
>> > At the end of the page is this warning:
>> >
>> > This circuit can be operated off the AC line 120 or 230 V).
>> > BUT the negative ground must be left floating since
>> > one side of the line Is grounded and YOU CANNOT ground
>> > both the Input and the NEG (or POS) DC or else B O O M!
>> >
>> > I guess I'm stupid (I've only had one cup of coffee, so there's my
>> > excuse),
>> > because I don't see a current path from the DC B+ side
>> > to the AC line, other than ground which is supposed to be -0-
>> potential
>> > on both sides. Now, if your B- ground came loose on the power supply
>> > and you didn't have a grounded line cord installed
>> > (which would be even stupider than me with this kind of voltage)
>> > you'd have full B- on the chassis to ground and your wife
>> > would have to pay for a funeral.
>> >
>> > OK... what am I missing here?
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