(audio) "PA amp"?

[Pooh Bear]

Guy Macon wrote:

Nicholas O. Lindan <see@sig.com> says...

In 90% of clients that blame all their intermittent problems
on the power company, I have found the true cause to be either,
and often both:

o Ones with really shoddy design, though not in the power supply
o Ones with bad software

The other 10% have a badly designed power supply.

In 27 years of consulting, most of it fixing reliability problems,
I have never found the power company is to blame.

I had the same experience until I started making things that were
exported to third-world countries.

Yup - that'll do it.

A company I worked for had no end of trouble with equipment exported to
Nigeria. The overvoltage there can be astonishing.


Graham

 

[Paul Hovnanian P.E.]

Ken Smith wrote:

In article <416C82F5.25850667@hotmail.com>,
Pooh Bear <rabbitsfriendsandrelations@hotmail.com> wrote:
[...]
A company I worked for had no end of trouble with equipment exported to
Nigeria. The overvoltage there can be astonishing.

In China I saw:

260Vac @ 47 Hz in the morning

160Vac @ 45 Hz in the after noon

On the same 220V 50Hz outlet.

Or somebody will run your product off a portable generator with a bad
speed governor.

--
Paul Hovnanian mailtoaul@Hovnanian.com
------------------------------------------------------------------
A vacuum is a hell of a lot better than some of the stuff that nature
replaces it with. -- Tennessee Williams

 

[Ken Smith]

In article <416C82F5.25850667@hotmail.com>,
Pooh Bear <rabbitsfriendsandrelations@hotmail.com> wrote:
[...]

A company I worked for had no end of trouble with equipment exported to
Nigeria. The overvoltage there can be astonishing.

In China I saw:

260Vac @ 47 Hz in the morning

160Vac @ 45 Hz in the after noon

On the same 220V 50Hz outlet.
--
--
kensmith@rahul.net forging knowledge

 

[SioL]

"Ken Smith" <kensmith@green.rahul.net> wrote in message
news:cki4rr$o0l$4@blue.rahul.net...

In article <416C82F5.25850667@hotmail.com>,
Pooh Bear <rabbitsfriendsandrelations@hotmail.com> wrote:
[...]
A company I worked for had no end of trouble with equipment exported to
Nigeria. The overvoltage there can be astonishing.

In China I saw:

260Vac @ 47 Hz in the morning

160Vac @ 45 Hz in the after noon

On the same 220V 50Hz outlet.

They must be late for work every morning

For a while most alarm clocks used mains as freq. reference.

SioL