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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: AC or DC on 10Y as driver posted by Nickel Core on November 9, 2006 at 06:45:00:
As said in other messages here, I am using a LM1084 current regulated heater for my 801A (12VAC-bridge-10000uF-2mH-10000uF-LM1084 voltage/ripple drop-LM1084 current source). You need to substantially heatsink the LMs.Adding a CM choke at the 801A's pins didn't change (improve) the sound at all in my case. I agree with Dave's comment below ... that CM would be a low impedance device (yes ... it will filter CM noise out). You can still use (cheap) double bobbins chokes as differential but I wonder if a few mHs are enough to drop the hum down to unlisteanable levels.
Ciao
Gianluca
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Follow Ups
- Re: AC or DC on 10Y as driver - gluca 09:21:01 11/09/06 (4)
- What I will try... - Nickel Core 09:56:46 11/09/06 (1)
- And.. - Nickel Core 10:17:19 11/09/06 (0)
- Re: AC or DC on 10Y as driver - dave slagle 09:29:36 11/09/06 (1)
- Secondary... - gluca 00:35:42 11/10/06 (0)
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