[sdiy] Oberheim OB-Mx PSU question

[Forbes, William - EE - UK/Leamington]

Indeed.
Several years ago, stuff destined for the EU had to be designed
to work correctly on 195V - 264V.
This is 230V +/- 15%
This covers the range 220 +/- 10% and 240 +/- 10%
This was the way the UK and the rest of the EU voltages
were harmonised (in 1999 I think).
Nowadays the whole of the EU should be 230V.
Thus any newer equipment should work in any EU country.

Bill.

> -----Original Message-----
> From: Ingo Debus [mailto:debus at cityweb.de]
> Sent: 20 November 2002 15:13
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Oberheim OB-Mx PSU question
> 
> 
> Peter Grenader wrote:
> > The hum Sebastian is experiencing is due to the fact that 
> the OBMX was
> > released in 1993, and at that point Gernam AC was runing 
> about 220.  I've
> > been told now it's floating at around 235.  It's 
> transformer is not designed
> > to handle this additional voltage, thus it hums.
> 
> Yes, the nominal mains voltage here is 230 volts now. It was 
> 220 volts 
> about 20 years ago.
> I'm pretty sure in 1993 it was already 230 volts.
> 
> Anyway if this was designed for 220 volts and doesn't work properly 
> with 230 it's a poor design IMHO. That's less than 5% overvoltage.
> 
> Ingo
> 
>