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Old 23rd Jan 2011, 11:42 am   #6
Martin G7MRV
Heptode
 
Join Date: May 2008
Location: Selby, North Yorkshire, UK.
Posts: 949
Default Re: EM84 tube - pinout and spec?

Thanks Paul, interesting.

From the datasheet then iI see iI need to give it 6.3v on the heater and +250v DC on anode, but between o and -10v ish on the grid?

OK, so the 250v should be easy enough, and the heater volts, since iI have the transformer out of the radio, but how to generate the negative LT for testing the function on the grid? Perhaps just an extra battery to provide that?

Does anyone have a simple test circuit?
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