In Reply to: Transformer loaded 6SN7 pre…… it’s alive. posted by martyh on December 10, 2006 at 16:37:13:
The transformers are vintage RCA for the output and lundahl for the input. B+ supply is LCLC with the last bit of C connected between the cathode and the top of the transformer all of the caps are paper in oil with no bypasses. The dual heater supplies are full wave rectified and current regulated on the PS chassis, the last filter cap is right at the tube pins.
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Follow Ups
- The basic schematic again. - martyh 16:38:49 12/10/06 (40)
- Re: bias location and noise - martyh 20:16:30 12/12/06 (0)
- Unrelated question about this schematic - Nickel Core 10:51:23 12/11/06 (9)
- Re: Unrelated question about this schematic - Joel Tunnah 14:22:05 12/11/06 (6)
- Re: Unrelated question about this schematic - Nickel Core 15:31:31 12/11/06 (5)
- Re: Unrelated question about this schematic - dave slagle 06:32:48 12/12/06 (0)
- Re: Unrelated question about this schematic - danlaudionut 20:41:45 12/11/06 (2)
- Re: Unrelated question about this schematic - Joel Tunnah 03:14:43 12/12/06 (1)
- Re: Unrelated question about this schematic - danlaudionut 05:02:41 12/12/06 (0)
- Re: Unrelated question about this schematic - Joel Tunnah 16:20:54 12/11/06 (0)
- Re: Unrelated question about this schematic - danlaudionut 13:16:57 12/11/06 (1)
- Yes, of course.... thanks (nt). - Nickel Core 13:37:04 12/11/06 (0)
- No DC across volume control pot, please. - cheap-Jack 08:53:42 12/11/06 (9)
- Re: No DC across volume control pot, please. - Joel Tunnah 13:36:54 12/11/06 (8)
- So the textbook is wrong then. - cheap-Jack 07:58:33 12/12/06 (7)
- You're right, Jack (nt) - Henry Pasternack 15:00:18 12/12/06 (5)
- Hi, Henry. - cheap-Jack 08:32:16 12/13/06 (4)
- Re: Hi, Henry. - Henry Pasternack 18:45:32 12/14/06 (3)
- Frankly, I don't have the patience even if .. - cheap-Jack 07:24:15 12/15/06 (2)
- Re: Frankly, I don't have the patience even if .. - Henry Pasternack 08:34:37 12/15/06 (1)
- Yes, you can say it again ( about music school). - cheap-Jack 08:55:36 12/15/06 (0)
- No... - Joel Tunnah 09:14:38 12/12/06 (0)
- Re: The basic schematic again. - korneluk 17:49:47 12/10/06 (1)
- Bias is -9V - martyh 18:04:18 12/10/06 (0)
- Re: The basic schematic again. - dave slagle 17:43:16 12/10/06 (16)
- A bit near maximum volume - martyh 18:02:10 12/10/06 (15)
- Re: A bit near maximum volume - Chris O 19:17:14 12/10/06 (14)
- Wait a minute - Dave Cigna 16:09:00 12/11/06 (7)
- How are you so sure? - cheap-Jack 08:21:35 12/12/06 (3)
- Re: How are you so sure? - Dave Cigna 16:06:00 12/12/06 (2)
- Yea, I'm a "muddy-minded blabbler". - cheap-Jack 09:10:45 12/13/06 (1)
- I need to apologize - Dave Cigna 15:45:20 12/13/06 (0)
- Re: "I don't see any current going through the wiper here." - Ivan303 18:36:13 12/11/06 (0)
- Re: Wait a minute - martyh 18:02:01 12/11/06 (1)
- Please let us know if changing the battery position - Ivan303 18:39:06 12/11/06 (0)
- Re: A bit near maximum volume - martyh 06:31:46 12/11/06 (5)
- Why can't you use the battery alone as bias on the cathode? - Ivan303 08:34:20 12/11/06 (2)
- Re: Why can't you use the battery alone as bias on the cathode? - martyh 11:42:13 12/11/06 (1)
- Re: Why can't you use the battery alone as bias on the cathode? - danlaudionut 13:28:28 12/11/06 (0)
- Re: A bit near maximum volume - dave slagle 08:05:20 12/11/06 (1)
- Re: A bit near maximum volume - martyh 12:17:52 12/11/06 (0)