wow!
Thanks for ALL of the replies guys.... very informative.
So....
its around 390v plate to ground minus the 60 is 330v plate to cathode at 65mA or so.....
What bias should I really run them at????
Am using those EP 5K to 8 ohm PP output tranny's.
So... either seperate the cathode resistors or use a CCS...
Use a LM317 for CCS or make one using a MOSFET and a NPN as a current sense?
What kind of choke would I need if I were to go with a common choke on the cathodes?
again, thanks!
Thanks for ALL of the replies guys.... very informative.
So....
its around 390v plate to ground minus the 60 is 330v plate to cathode at 65mA or so.....
What bias should I really run them at????
Am using those EP 5K to 8 ohm PP output tranny's.
So... either seperate the cathode resistors or use a CCS...
Use a LM317 for CCS or make one using a MOSFET and a NPN as a current sense?
What kind of choke would I need if I were to go with a common choke on the cathodes?
again, thanks!
I personally have run Sovtek 6B4G at 29W dissipation in SE for a period of several months with seemingly no ill effects. They made quite a bit more power, thats for sure. NOS ones I wouldn't run harder than 15W.
Your bias of 330Vx65mA is 21W or so, you could run them a little hotter with no probs.
Try 25W+ or so if you like. Check your output transformer's current limit... Assuming a push-pull trannies, they should be good for it...
Your bias of 330Vx65mA is 21W or so, you could run them a little hotter with no probs.
Try 25W+ or so if you like. Check your output transformer's current limit... Assuming a push-pull trannies, they should be good for it...
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