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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Hi,
I implemented a VR tube screen regulator on my SV83 driver circuit, based on some replies to my questions earlier this week.I also decided to try out battery bias and soldered together 2 cells for 3V.
All my voltages seem to measure out okay, except the plate voltage which doesn't seem to drop at all from B+. Also, my tube amp now makes no music :). I know the output tubes work, .. and by adjusting the hum pot, can get them to hum but i wonder what i've done to my driver circuit.cathode voltage 3V
screen voltage 153V
plate voltage = B+ = 295V ?????Thanks for any advice.
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Topic - what's up with my plate resistor - zobsky 22:18:51 10/16/06 (11)
- Re: what's up with my plate resistor - zobsky 08:46:44 10/17/06 (0)
- Re: what's up with my plate resistor - lipmanl 07:22:03 10/17/06 (0)
- Sorry I should realized that was a driver so the 7.5k is normal. - MIchael Samra 00:06:23 10/17/06 (0)
- Re: what's up with my plate resistor - MIchael Samra 23:50:15 10/16/06 (0)
- I tried upping the plate resistor to 10K - zobsky 22:28:09 10/16/06 (6)
- Re: I tried upping the plate resistor to 10K - Jim McShane 05:46:48 10/17/06 (0)
- Re: I tried upping the plate resistor to 10K - Pär 23:35:02 10/16/06 (4)
- Thanks Ray Moth: I have done all of those things.Progress mr. Zobsky? - -3db 14:03:43 10/17/06 (2)
- Re: Thanks Ray Moth: I have done all of those things.Progress mr. Zobsky? - zobsky 11:19:00 10/18/06 (1)
- Progress mr. Zobsky? ==) .. well, I blew up mycathode bias batteries - zobsky 08:17:18 10/19/06 (0)
- Seems like a faulty component - Ray Moth 01:01:12 10/17/06 (0)
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