Re: [PSES] 10 MHz mag field for EN 61000-4-10

2013-06-18 Thread John Woodgate
In message 20130618.073854.236474654.vef00...@nifty.ne.jp, dated Tue, 18 Jun 2013, T. Sato vef00...@nifty.ne.jp writes: The waveform is probably one of the fast damped oscillatory waves specified in IEC 61000-4-18, which simulate oscillatory waves generated in gas insulated substations for

Re: [PSES] 10 MHz mag field for EN 61000-4-10

2013-06-18 Thread T.Sato
On Tue, 18 Jun 2013 07:02:58 +0100, John Woodgate j...@jmwa.demon.co.uk wrote: In message 20130618.073854.236474654.vef00...@nifty.ne.jp, dated Tue, 18 Jun 2013, T. Sato vef00...@nifty.ne.jp writes: The waveform is probably one of the fast damped oscillatory waves specified in IEC

Re: [PSES] safety 60950 and surge suppression circuits - 13A plugs

2013-06-18 Thread Mick Maytum
Joe, My memories of the early 13 A plugs in the UK is their consistency rather than inconsistency. I was in TV design at that time. Traditionally the early TV power supplies used a half-wave rectifier, so the chassis was either L or N. When the 13 A plug became widely used the chassis was

Re: [PSES] safety 60950 and surge suppression circuits - 13A plugs

2013-06-18 Thread John Woodgate
In message 6.1.0.6.2.20130618130138.056f9...@pop.randolph-telecom.com, dated Tue, 18 Jun 2013, Joe Randolph j...@randolph-telecom.com writes: Someone from the UK explained to me that in the UK, there was a time when two different mains plug styles were widely used.  When a customer went to a

Re: [PSES] safety 60950 and surge suppression circuits - 13A plugs

2013-06-18 Thread John Woodgate
In message 009d01ce6c4c$71a42460$54ec6d20$@blueyonder.co.uk, dated Tue, 18 Jun 2013, John Allen john_e_al...@blueyonder.co.uk writes: BTW, a lot of the imported products actually arrive at the UK consumer with a Continental 2.5A two-pin plug fitted and a Schuko to BS1363 adaptor to adapt that

Re: [PSES] safety 60950 and surge suppression circuits - 13A plugs

2013-06-18 Thread John Allen
Mick And then there was that small projection TV company that we both worked for in 1975/76 where some designer (absolutely NOT yourself!) wired up the operator control panel with about a dozen Neon indicators across the Mains from Live to Ground instead of to Neutral (before I put right!).