[Amps] Direct rectification of AC mains to drive the amp,

[Alex Eban]

And what about the transformers on the input and output of the amplifier
board? Don't they qualify as such?
I'll tell you even some more: the American standard of safety is more
concerned with the fire hazards while the European is more concerned with
electrocution. As such isolation requirements in Europe are 10 times input
voltage plus 250 volts and that amounts to 2750 volts. Test a transmission
line transformer with a high pot and you'll find something around 3000 to
5000 volts withstand, depending on coax. Why isn't that enough?
Alex	4Z5KS

-----Original Message-----
From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Alf Pousar
Sent: Monday, October 07, 2013 12:16 PM
To: amps at contesting.com
Subject: Re: [Amps] Direct rectification of AC mains to drive the amp,

Hello guys,

it's not correct to compare a SMPS with this topic. All SMPS are isolated. 
Output terminals are behinde a transformer for sure!

Have a nice day!
Alf  OH2QM

----- Original Message -----
From: "Alex Eban" <alexeban at gmail.com>
To: <g8on at fsmail.net>; "'Manfred Mornhinweg'" <manfred at ludens.cl>;
<amps at contesting.com>
Sent: Monday, October 07, 2013 10:33 AM
Subject: Re: [Amps] Direct rectification of AC mains to drive the amp,


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