Psu ID

[Skywave]

The EUG Forum: I know it well. If you don't get this mystery solved there, I don't think you'll ever get it answered. Good luck.

Al.

[Michaelr]

For what it is worth Lawrence , the look of the power supply reminds me of PYE product.

The black Knob is very similar to what is used on the PYE C12 but that was a 50's design.

Mike

[pwdrive]

Thanks Mike, I will just have to wait to see what turns up, I am convinced that the PSU in question was made by the same manufacture as the one that powers the Marconi CR300 as both have very similar "signatures" a common feature to both types is the DC in facility (vibrators) the vibrators in them were Weare & Wright and I am wondering if maybe that company also made or subcontracted to make PSU's.

Lawrence.

[pwdrive]

Trying to eliminate various contenders for this power supply, does any one know if Wright & Weare (Wearite) made transformers to match their vibrators, they seemed to have made more or less everything else that had coils in them from tape head demagnetizers to RF and IF coils.

Lawrence.

[pwdrive]

           

Some internal pics. (excuse any temp lash ups) The only date stamp is 1944 on the block capacitor on the top of the chassis.

Lawrence

[Skywave]

I've been reviewing everything that has now been written here about this PSU: let's summarise.

1. It's very likely that this PSU and the PSU for an Eddystone 358X were made by the same manufacturer.
2. The PSU for the Marconi CR.300 has strong similaraties to this PSU.
3. This PSU is not for a 358X nor a CR.100: we don't know what receiver it was made for.
4. So, the list of possible manufacturers of this PSU are: (a) Eddystone, (b) Marconi, © some other company.
5. Somehow the idea that Marconi built this PSU and the one for the 358X seem highly unlikely. Similarly, the idea that Eddystone built this PSU and the one for the CR.100 seems equally unlikely. Hence, we are left with 'some other manufacturer' as the most likely explanation. As for whom, I really wouldn't want to hazard a guess.
6. As for what particular receiver this PSU was made for, the possibilities are wide, but reviewing what I wrote earlier, the Eddystone S.358/1 (low power AF output stage), the S.358X, S.400, S.400X and the S.400B, (a.k.a. the Air Ministry R.1448) all seem to be strong contenders.

And at this point in time, that's as far as I can go with this: HTH.

Al.

[pwdrive]

Thanks Al, I might be proved wrong but I think the PSU discussed for the Eddystone and the Marconi CR300 are by the same manufacturer, when you see them in the flesh there are just to many similarity "signatures"
As both these units have vibrators by Wright & Weare "W&W" I am wondering if they were the manufactures, there is little about the company on the web but apparently they did supply components for the Mosquito aircraft during the war. no positive ID on the Eddystone User Group Forum or the WS 19 Group.
Could end up being one of lifes mysteries, I suspect that the one I have is not the only one in existance, so you never know.

Lawrence.

[pwdrive]

Hello all, I have just found this:


http://www.eddystoneusergroup.org.uk/EUG...EUGN71.pdf

Towards the end there is an article about the Eddystone 400B/R1448 receiver (derivative of the 358) it's worth a read if interested in Eddystone Receivers.

Lawrence