So if I built my next amplifier that is directly rectified by the mains, it
will cause a train wreck?
Good to know!
Sorry, just another peanut from the gallery.
----- Original Message -----
From: "peter chadwick" <g8on@fsmail.net>
To: "Manfred Mornhinweg" <manfred@ludens.cl>; <amps@contesting.com>
Sent: Wednesday, September 18, 2013 12:43 PM
Subject: Re: [Amps] Re Direct rectification of AC mains to derive the amp,
VDD, supply
Manfred,
I am afraid you are missing my point. What you can do safely as a
professional engineer is not the same as the average amateur building at
home. For example, getting the necessary spacing between PCB tracks,
making an RF transformer which meets a 2kV breakdown - these are things
(and not the only ones) that the average homebrewer could get into trouble
with. Especially if they take any short cuts such as deciding to earth the
neutral.
Many years ago now, there was an article in QST entitled "Just like the
QST article except...": it went into how people made minor changes to the
published design and had problems.
I could see the same article being required again......
While to see one result of an inadvertent earthing
http://www.railwaysarchive.co.uk/documents/MoT_Barnham1962.pdf
73
Peter G3RZP
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