82 mercury vapor rectifier

9/8/2009 10:34:28 PMLS

Starting work on a Crosley 146, which has an 82 rectifier. Other than fusing the secondary of the power transformer, is there a way to reduce damage from a failure of the 82? Any thoughts would be appreciated...

9/9/2009 11:40:39 AMWarren

Fuse the Primary side too.

9/9/2009 5:41:19 PMLou

In all the years I have used my Columbia console radio, the 82 has never failed.

Lou

:Fuse the Primary side too.
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9/10/2009 10:33:51 PMLS

Thank you, that is reassuring.

In all the years I have used my Columbia console radio, the 82 has never failed.
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:Lou
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::Fuse the Primary side too.
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9/10/2009 2:46:31 PMChris

:Starting work on a Crosley 146, which has an 82 rectifier. Other than fusing the secondary of the power transformer, is there a way to reduce damage from a failure of the 82? Any thoughts would be appreciated...

9/10/2009 6:09:32 PMcodefox

Just put a silicon diode in series with each plate. Use a 600 volt 1 amp type and you're good to go. The fuse on the secondary is also an excellent idea.
::Starting work on a Crosley 146, which has an 82 rectifier. Other than fusing the secondary of the power transformer, is there a way to reduce damage from a failure of the 82? Any thoughts would be appreciated...
:

9/10/2009 10:32:39 PMLS

Yes, thank you, I had wondered about exactly that - a diode in each plate circuit, but worry that voltage drop accross the diodes might prove to be significant, since there is so little drop accross a mercury vapor rectifier.

Just put a silicon diode in series with each plate. Use a 600 volt 1 amp type and you're good to go. The fuse on the secondary is also an excellent idea.
:::Starting work on a Crosley 146, which has an 82 rectifier. Other than fusing the secondary of the power transformer, is there a way to reduce damage from a failure of the 82? Any thoughts would be appreciated...
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9/11/2009 10:03:11 AMLewis L

:Yes, thank you, I had wondered about exactly that - a diode in each plate circuit, but worry that voltage drop accross the diodes might prove to be significant, since there is so little drop accross a mercury vapor rectifier.

If Ii recall, the drop across a silicon diode is about one-tenth that of a mercury vapor rectifer.
Lewis
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:Just put a silicon diode in series with each plate. Use a 600 volt 1 amp type and you're good to go. The fuse on the secondary is also an excellent idea.
::::Starting work on a Crosley 146, which has an 82 rectifier. Other than fusing the secondary of the power transformer, is there a way to reduce damage from a failure of the 82? Any thoughts would be appreciated...
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