[Milsurplus] [Boatanchors] 19 Set Power Supply

[J. Forster]

Mine are not to hand so I can't tell you the S/Ns.

I'm not so sure bringing it up on a Variac is the issue. One of the tubes
in the HT2 supply has about 300 V, heater to cathode. IMO, that's asking
for trouble. Silly design.

The main failure mode seems to be arcover in the HT windings of the
transformer also. I have one mostly reverse engineered and will get one
rewound eventually.

Best,
-John



> J. Forster wrote:
>> Hi,
>>
>> There were VERY FEW of the Canadian AC supplies ever made. I think less
>> than 500 total.
> I have one that is s/n 778. The date on the metal tag is 1950 so they
> built these long after the war.
>>  On top of that, all the magnetics in them were in a
>> single tar potted can, including a transformer, regulating choke, and
>> three filter chokes. The thing is a disaster and a large majority have
>> failed. After failure, the magnetics were stripped out by hams and
>> replacement parts fitted.
> That design is called a single point of failure. :-)
> I use mine weekly and always bring it up on a variac.
>
> Bruce   ve7mt