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More Zephyr technical info

1596 Views 5 Replies 6 Participants Last post by  neil_s_wood
Hi all,

I bought a Zephyr recently. Because I imported it from the US to the UK, I bought it without the US-spec power supply. So I needed to find out how to connect my own power supply. For the benefit of anyone else who does this, here's what I learnt:

Power input socket:
  • the input requires 15V (rms) AC 50/60Hz (must not exceed 16V rms)
  • alternatively, 18V DC may be used (must not exceed 22V DC)
  • the supply requires up to 2.5A to meet the full capability of the Zephyr.
  • the connector is 5.5mm dia. (outer), 2.0mm dia. (inner)
  • for a DC supply, the centre pin is positive, the outer conductor is negative.
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Doug - that's a very well made looking power supply & you seem to have taken good care of protection indeed.

As an electrical engineer (who does a fair amount of Portable Appliance Testing) I just wish more people would take the sort of care that you have. Sometimes, when I am at exhibitions I have to have "selective vision" & just remind myself on why I am there. Many of the mains electrics I see would fail on the basic visual.

As an aside I have been asked by a number of clubs/societies to test their mains equipment, but I am not too keen because of the possible reactions of some people. As an example, last week I tested 2 model railways being used in a cinema projection room & failed both of them for exposed mains transformers & terminals under the baseboards & the owner/builder was a friend of mine !

In my opinion, it's only a matter of time before venue owners/operators insist of P A Testing. Many venues already insist on everyone using a "circuit breaker".
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