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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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In Reply to: got it! posted by trippyloaf on November 1, 2001 at 15:21:45:
As I don't have the circuit diagram, I suppose that 6.3V-AC supply is used for the driver stage that has indirect heating cathode. In most case hum ballancer or CT is not necessary for the indirect heating tube because heater circuit is isolated.If there is no CT in your transformer, you can check it by adding hum ballancer in 6.3V. Maybe you won't be able to get the good result. For my experience I got the best (Least hum) point at the both side of hum ballancer. That ment hum ballancer wasn't necessary.
But 6.3V circuit should not be floated, as you wrote. Because floating means being coupled with stray capacitors to the signal line, and it may be affected by noise easily.
I solved similar problem by changing ground wiring and ground point before. You should better try one point grounding carefully.
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- Re: got it! - Grid_Leak 16:36:59 11/01/01 (0)
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