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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: Re: Yes posted by Triode_Kingdom on February 1, 2007 at 08:17:32:
how do you not ground the battery? we are talking DHT's here aren't we?you mention a CT resistor above, so lets assume a pair of 25 ohm resistors in series across the filament with the connection grounded (fixed bias).
Looking at the impedance to ground from each filament pin I see two paths. The most obvious path is simply through the 25 ohm resistor to ground, The other path consists of the impedance of the battery in series with the other 25 ohm resistor to ground. Since the batteries internal impedance is typically a fraction of an ohm, I still see half of your audio current traversing the battery.
dave
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Follow Ups
- Re: Yes - dave slagle 18:15:36 02/01/07 (12)
- Re: Yes - Triode_Kingdom 20:06:05 02/01/07 (11)
- Re: Yes - dave slagle 08:30:40 02/02/07 (10)
- Re: Yes - Triode_Kingdom 12:16:24 02/02/07 (4)
- Re: Yes - Dave Cigna 15:45:22 02/02/07 (1)
- Re: Yes - Triode_Kingdom 08:02:50 02/07/07 (0)
- Re: Yes - dave slagle 14:52:14 02/02/07 (1)
- Re: Yes - Triode_Kingdom 08:05:04 02/07/07 (0)
- Time to ask and learn - Russ57 11:32:46 02/02/07 (4)
- Re: Time to ask and learn - dave slagle 13:14:04 02/02/07 (3)
- Bear with me - Russ57 09:26:14 02/03/07 (2)
- Re: Bear with me - dave slagle 13:52:44 02/03/07 (1)
- Re: Bear with me - Dave Cigna 14:10:15 02/04/07 (0)
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