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On Wed, Feb 4, 2015 at 4:26 AM, Stefan Trethan stefan_trethan@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:Depends on a number of factors such as expected pollution, humidity,
operating altitude, etc.
Something under 0.5mm will possibly result in immediate failure.
Something like 1mm would probably be my design minimum.
Obviously this is functional insulation only, in other words if this
insulation breaks down nothing bad must happen except a blown fuse.
For any kind of safety insulation you would need much more than that.
ST
On Wed, Feb 4, 2015 at 11:06 AM, lists
Stuartlists@... [Homebrew_PCBs]
<Homebrew_PCBs@yahoogroups.com> wrote:
> I am currently designing a 10-300V, 100mA bench PSU. The transformer is a
> 300-0-300 from an old valve power amplifier.
>
> What is the minumum track spacing I can use for 300V AC and the resulting
> 420V DC?
>
> --
> Stuart Winsor
>
> Tools With A Mission
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