Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Jim -
Sorry, that's what I get for trying to do it in my poor old head.
2V at 0.6A would be 3.3 ohms at 2W.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B & C-Line Service Supplement CDs
<www.k4oah.com>
Jim Shorney wrote:
"Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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On Mon, 25 Jun 2007 11:08:58 -0400, Garey Barrell wrote:
Well, if you have a 27 ohm 1/2 W resistor lying around you can stick it
in series with the filament and see if the hum goes away! Prove my
theory.... :
Yeah, 27 ohms took the hum away, bigtime. Everything else too. Ended up
with about 4 volts on the heater with 3.7 ohms. Hum still there. Maybe I
have a flakey 6BN8. I've got a couple 8BN8s on the way now.
73
-Jim (according to the 390 guys, tube testers are for wimps...)
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