[R-390] Selenium Rectifier

DW Holtman future212 at comcast.net
Tue Nov 15 21:16:09 EST 2005


Hello,

Thanks to all for the very informative answers on the selenium question. 
I will do as recommended, leave the old fins inplace and hide the solid 
state bridge as well as possible.
Best,
Dw holtman
WB7SSN

Barry Hauser wrote:

> Hi DW
>
> All you'll find are NOS or pulls from chassis and it's best not to 
> rely on them.  I think most would agree, it's OK if the SS bridge is 
> visible -- you have to peek down the back with the cover off -- and 
> that's downright nosey. Even if seen, it shows you care. ;-)
>
> I haven't had any seleniums fail lately, but one did when I was merely 
> a child back in the late 50's -- in a Motorola TV.  The smoke and 
> acrid stink left quite an impression. (If I think about it real hard, 
> I could make myself choke.)  When my uncle visited, he replaced it 
> with the latest thing -- a tiny, shiney, "top hat" silicon rectifier.
>
> It's customary to leave the Se rectifier in place and mount the solid 
> state replacement nearby.  SOP around here.  They're still pretty, 
> brightly colored and be-finned, yet safe if not in the circuit.
>
> Barry
>
> ----- Original Message ----- From: "DW Holtman" <future212 at comcast.net>
> To: <R-390 at mailman.qth.net>
> Sent: Tuesday, November 15, 2005 5:10 PM
> Subject: [R-390] Selenium Rectifier
>
>
>> Hello,
>>
>> Does anyone know where I might buy a Selenium Rectifier for the 
>> chassis of a R-390A, CR-102. I have replaced it with a solid state 
>> bridge for now, but would very much like to get something more 
>> original in the chassis.  I could not figure out a clever way to hide 
>> the diodes inside the selenium fins.
>>
>> Thank you for your time.
>>
>> 73's
>> DW Holtman
>> WB7SSN
>>
>>
>> Selenium
>>
>>
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>
>
>




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