stupid 5840 question

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fjh

Member
Joined
Dec 26, 2004
Messages
7
I feel a little silly asking this question, but I just finished a Royer mod on a MXL2003 mic. Unfortunately, I'm not getting any signal from it. I traced my circuit against the schematic and it checks out. I wondered if I might have wired the tube (5840) backwards. So my question is this:

On the 5840 data sheet, is the diagram showing the pin assignments a "top-down" view or a "bottom-up" view?
 
I doubt that you've wrecked it.

If you ever have a question on tube pinouts (I sometimes can't remember the basing diagrams either), use an ohmmeter on the filament to check your counting.

-Dale
 

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