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In Reply to: 813 set schematic posted by vinnie2 on February 10, 2019 at 09:12:26:
That would be a very noisy filament supply.
Start with more voltage and use a critical inductance input choke after the bridge rectifier and before the first cap.
With the high current draw the choke will only need to be 20 or so mH.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
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Follow Ups Full ThreadTopic - 813 set schematic - vinnie2 09:12:26 02/10/19 (127)
- update 2 - vinnie2 11:49:35 02/15/19 (49)
- RE: update 2 - deafbykhorns 03:46:40 02/17/19 (44)
- RE: update 2 - vinnie2 03:59:41 02/17/19 (43)
- RE: update 2 - deafbykhorns 12:14:49 02/17/19 (42)
- RE: update 2 - vinnie2 12:45:09 02/17/19 (41)
- RE: update 2 - deafbykhorns 17:57:09 02/17/19 (40)
- RE: update 2 - vinnie2 13:54:06 02/18/19 (38)
- RE: update 2 - cpotl 16:16:32 02/18/19 (37)
- RE: update 2 - vinnie2 18:14:21 02/18/19 (36)
- RE: update 2 - cpotl 19:57:17 02/18/19 (35)
- RE: update 2 - vinnie2 04:58:32 02/19/19 (34)
- RE: update 2 - cpotl 06:07:46 02/19/19 (0)
- RE: update 2 - cpotl 05:40:56 02/19/19 (32)
- RE: update 2 - vinnie2 07:00:18 02/19/19 (31)
- RE: update 2 - deafbykhorns 15:15:55 02/20/19 (30)
- RE: update 2 - Tre' 10:12:50 02/22/19 (0)
- much better! - vinnie2 06:21:16 02/22/19 (24)
- RE: much better! - cpotl 08:42:38 02/22/19 (23)
- RE: Sample Sine Wave - deafbykhorns 11:28:41 02/22/19 (20)
- 845 op points - vinnie2 06:19:57 02/23/19 (0)
- RE: Sample Sine Wave - vinnie2 05:02:59 02/23/19 (15)
- RE: Sample Sine Wave - deafbykhorns 16:51:37 02/23/19 (14)
- RE: Sample Sine Wave - vinnie2 17:56:28 02/23/19 (13)
- RE: Grid Current - deafbykhorns 14:56:39 02/24/19 (7)
- RE: Grid Current - vinnie2 17:59:00 02/24/19 (6)
- RE: Grid Current - deafbykhorns 06:00:36 02/25/19 (5)
- RE: Grid Current - vinnie2 06:44:26 02/25/19 (4)
- RE: Try the 300B with a good DHT - deafbykhorns 07:54:02 02/25/19 (3)
- RE: Try the 300B with a good DHT - vinnie2 09:19:20 02/25/19 (2)
- RE: Try the 300B with a good DHT - deafbykhorns 13:01:02 02/25/19 (1)
- thanks! nt - vinnie2 13:59:12 02/25/19 (0)
- what are the 6sn7 op points? (nt) - Tre' 06:53:46 02/24/19 (4)
- RE: what are the 6sn7 op points? (nt) - vinnie2 14:45:14 02/24/19 (3)
- RE: what are the 6sn7 op points? (nt) - Tre' 18:02:17 02/25/19 (2)
- RE: what are the 6sn7 op points? (nt) - vinnie2 04:31:51 02/26/19 (1)
- RE: what are the 6sn7 op points? (nt) - cpotl 05:07:07 02/26/19 (0)
- good post (nt) - Tre' 14:06:08 02/22/19 (0)
- RE: Sample Sine Wave - vinnie2 11:40:25 02/22/19 (1)
- RE: Sample Sine Wave - Tre' 14:05:06 02/22/19 (0)
- Good point. - Tre' 10:43:36 02/22/19 (0)
- RE: much better! - vinnie2 09:56:27 02/22/19 (0)
- RE: update 2 - vinnie2 06:23:22 02/21/19 (2)
- RE: Example - deafbykhorns 12:38:17 02/21/19 (0)
- RE: update 2 - cpotl 08:29:18 02/21/19 (0)
- RE: update 2 - vinnie2 17:54:53 02/20/19 (0)
- RE: update 2 - vinnie2 06:45:38 02/18/19 (0)
- my suggestion - Jim Dowdy 12:22:25 02/16/19 (3)
- RE: my suggestion - vinnie2 12:47:58 02/16/19 (2)
- RE: my suggestion - Jim Dowdy 12:59:46 02/16/19 (1)
- RE: my suggestion - vinnie2 04:04:39 02/17/19 (0)
- update.... - vinnie2 14:57:38 02/12/19 (33)
- confused again - vinnie2 06:28:42 02/13/19 (21)
- RE: confused again - JKT 17:57:02 02/13/19 (3)
- Not Quite - Triode_Kingdom 19:24:29 02/13/19 (1)
- RE: Not Quite - JKT 19:53:45 02/13/19 (0)
- RE: confused again - vinnie2 17:58:34 02/13/19 (0)
- RE: confused again - Caucasian Blackplate 09:12:37 02/13/19 (16)
- RE: confused again - vinnie2 15:23:36 02/13/19 (1)
- RE: confused again - JKT 09:54:58 02/15/19 (0)
- RE: confused again - vinnie2 13:29:54 02/13/19 (13)
- RE: confused again - Caucasian Blackplate 15:17:18 02/13/19 (12)
- RE: confused again - vinnie2 15:24:44 02/13/19 (11)
- RE: confused again - Caucasian Blackplate 15:25:29 02/13/19 (10)
- RE: confused again - vinnie2 15:36:38 02/13/19 (9)
- RE: confused again - Caucasian Blackplate 15:40:30 02/13/19 (8)
- Boy howdy,that really made a difference! - vinnie2 06:42:37 02/14/19 (6)
- RE: Boy howdy,that really made a difference! - JKT 08:34:21 02/14/19 (5)
- RE: Boy howdy,that really made a difference! - vinnie2 08:53:30 02/14/19 (4)
- RE: Boy howdy,that really made a difference! - Tre' 07:47:40 02/15/19 (3)
- RE: Boy howdy,that really made a difference! - vinnie2 11:57:20 02/15/19 (2)
- RE: Boy howdy,that really made a difference! - Tre' 14:49:11 02/15/19 (1)
- RE: Boy howdy,that really made a difference! - vinnie2 15:07:00 02/15/19 (0)
- RE: confused again - vinnie2 17:54:34 02/13/19 (0)
- Big difference on input sensitivity - DAK 18:44:28 02/12/19 (10)
- RE: Big difference on input sensitivity - Triode_Kingdom 07:55:00 02/13/19 (8)
- The RCA tube manual gives no info on triode mode - DAK 09:48:05 02/13/19 (7)
- Apples and Oranges - Triode_Kingdom 19:09:22 02/13/19 (2)
- RE: Apples and Oranges - Tre' 20:35:41 02/13/19 (1)
- Triode Curves - Triode_Kingdom 21:00:22 02/13/19 (0)
- RE: The RCA tube manual gives no info on triode mode - vinnie2 13:32:14 02/13/19 (0)
- RE: The RCA tube manual gives no info on triode mode - buffy 10:52:55 02/13/19 (2)
- Thanx Buffy, you da man! nt. - DAK 21:57:07 02/13/19 (0)
- RE: The RCA tube manual gives no info on triode mode - vinnie2 14:40:38 02/13/19 (0)
- RE: Big difference on input sensitivity - vinnie2 03:29:51 02/13/19 (0)
- powerdrive - RayP 17:09:49 02/11/19 (1)
- RE: powerdrive - vinnie2 17:56:29 02/11/19 (0)
- RE: 813 set schematic - Chip647 16:36:59 02/11/19 (1)
- RE: 813 set schematic - vinnie2 16:55:34 02/11/19 (0)
- RE: 813 set schematic - buffy 14:52:34 02/11/19 (1)
- RE: 813 set schematic - vinnie2 16:57:47 02/11/19 (0)
- RE: 813 set schematic - buffy 12:08:36 02/11/19 (1)
- RE: 813 set schematic - vinnie2 13:51:20 02/11/19 (0)
- Aren't the 813 load lines non linear at the voltage? nt - DAK 23:08:13 02/10/19 (9)
- RE: Aren't the 813 load lines non linear at the voltage? nt - vinnie2 03:42:52 02/11/19 (0)
- Like Vinnie knows that or gives a shit if he does. - Timbo in Oz 01:22:22 02/11/19 (7)
- crawl back under your bridge Troll.....nt - vinnie2 03:43:45 02/11/19 (6)
- Okay, guys... - FenderLover 06:32:51 02/12/19 (5)
- RE: Okay, guys... - vinnie2 07:36:42 02/12/19 (4)
- Sometimes, it better to let it go... - FenderLover 07:40:34 02/12/19 (3)
- RE: Sometimes, it better to let it go... - vinnie2 11:47:42 02/12/19 (2)
- For Tube DIY, that would be me. - FenderLover 13:06:48 02/12/19 (1)
- RE: For Tube DIY, that would be me. - vinnie2 14:32:14 02/12/19 (0)
- I know it is fun and looks very cool, but - Chip647 16:14:49 02/10/19 (11)
- RE: I know it is fun and looks very cool, but - vinnie2 17:43:04 02/10/19 (10)
- f'whoop, not at the volts you are rubnning this at! - Timbo in Oz 00:11:02 02/11/19 (9)
- RE: f'whoop, not at the volts you are rubnning this at! - vinnie2 09:03:11 02/11/19 (6)
- I've learnt enough over the years and am happy with the once were LEAKs. - Timbo in Oz 13:05:20 02/11/19 (5)
- RE: I've learnt enough over the years and am happy with the once were LEAKs. - vinnie2 13:54:23 02/11/19 (4)
- I've done the DIY I needed to do but only after doing a lot of reading assisted and guided by older techies. - Timbo in Oz 14:03:47 02/11/19 (3)
- RE: I've done the DIY I needed to do but only after doing a lot of reading assisted and guided by older techies. - vinnie2 17:00:54 02/11/19 (2)
- I've been making valid comments. - Timbo in Oz 18:05:32 02/11/19 (1)
- RE: I've been making valid comments. - vinnie2 04:04:39 02/12/19 (0)
- RE: f'whoop, not at the volts you are rubnning this at! - Triode_Kingdom 07:46:37 02/11/19 (1)
- Farting about, and learning SFA. - Timbo in Oz 13:07:16 02/11/19 (0)
- RE: 813 set schematic - Caucasian Blackplate 15:28:37 02/10/19 (1)
- RE: 813 set schematic - vinnie2 17:46:30 02/10/19 (0)
- RE: 813 set schematic - PakProtector 15:10:39 02/10/19 (8)
- RE: it's a 12BZ7 these days ... - deathtube 667 09:37:36 02/12/19 (5)
- RE: it's a 12BZ7 these days ... - PakProtector 18:31:21 02/12/19 (4)
- RE: it's a 12BZ7 these days ...says DF - deathtube 667 20:22:07 02/12/19 (3)
- Good... - PakProtector 17:33:37 02/14/19 (2)
- RE: Good... - deathtube 667 03:04:06 02/15/19 (1)
- RE: Good... - PakProtector 10:08:53 02/16/19 (0)
- RE: 813 set schematic - vinnie2 17:38:08 02/10/19 (0)
- Do I detect a bit of nostalgia? (nt) - Chip647 16:25:41 02/10/19 (0)
- RE: 813 set schematic - Tre' 10:20:21 02/10/19 (1)
- RE: 813 set schematic - vinnie2 11:10:08 02/10/19 (0)
Follow Ups
- RE: 813 set schematic - Tre' 10:20:21 02/10/19 (1)
- RE: 813 set schematic - vinnie2 11:10:08 02/10/19 (0)