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Old 27th Aug 2012, 5:43 pm   #10
Martin G7MRV
Heptode
 
Join Date: May 2008
Location: Selby, North Yorkshire, UK.
Posts: 949
Default Re: EM84 tube - pinout and spec?

Im (I'm) hoping to finally get this tube tried soon.

But, can anyone check a circuit for me? Ive (I've) worked up this simple circuit that im (I'm) hoping will at least let me light the thing up.

I cant (can't) get a diagram uploaded im (I'm) afraid, but heres (here's) the details -

EM84 tube
pins 4 and 5 6.3v for the heater
Pin 1 - 10k pot, wiper to pin, one side to gnd, the other to -ve of 9v PP3.
+ve of PP3 to gnd
Pin3 to gnd
Pin 6 to +225v
Pin 7 tied to pin 9
Pin 9 to +225v via 470k resistor

Im (I'm) open to suggestions on this of course. Im (I'm) thinking the pot might need to be bigger?
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