Search found 4206 matches
- Fri Sep 07, 2007 7:43 am
- Forum: Everyones Projects
- Topic: 6AS7 SE OTL
- Replies: 24
- Views: 23364
The ouput valves are effectively Cathode Followers right? So unless I'm missing something, a constant current source would do the job, yes, and keep the blighters in check, to boot. But you might be better of with something like the IXYS IXCP10M45S, I think you might find it easier to dial in the re...
- Thu Sep 06, 2007 8:39 pm
- Forum: Beginners
- Topic: Aikido power supply
- Replies: 29
- Views: 23913
Down side of the SS reg, is I don't know enough to build one thats good for 150ma @ 450v. I am sure it can be done though. But without that I can't do a direct comparison. I've managed to get as far as 100mA @ ~220v so, yes, I reckon Nick's right, it's possible, my issue has been getting them quiet...
- Thu Sep 06, 2007 8:29 pm
- Forum: Everyones Projects
- Topic: 6AS7 SE OTL
- Replies: 24
- Views: 23364
- Thu Sep 06, 2007 8:08 am
- Forum: Beginners
- Topic: Aikido power supply
- Replies: 29
- Views: 23913
Well, its only my bias, but the idea of increasing the source impedance of a power supply by adding resistance to burn voltage seems a mistake. I would agree, unless its a lash up to try something out, and then a variac seems a better solution for prototyping. I would also avoid multiple LC combo's...
- Tue Sep 04, 2007 6:27 pm
- Forum: Beginners
- Topic: Variac !!!
- Replies: 6
- Views: 8133
- Tue Sep 04, 2007 8:53 am
- Forum: Assorted Stuff
- Topic: Rapid Valve Sockets
- Replies: 7
- Views: 7321
- Tue Sep 04, 2007 7:56 am
- Forum: Everyones Projects
- Topic: DTBs 6B4G
- Replies: 361
- Views: 220052
- Tue Sep 04, 2007 7:14 am
- Forum: Everyones Projects
- Topic: D3a linestage
- Replies: 24
- Views: 16269
- Mon Sep 03, 2007 11:08 am
- Forum: Everyones Projects
- Topic: D3a linestage
- Replies: 24
- Views: 16269
- Mon Sep 03, 2007 9:57 am
- Forum: Everyones Projects
- Topic: D3a linestage
- Replies: 24
- Views: 16269
Hi Nick, What's the freq limit of the sig gen you have? It would be really interesting to see where this circuit starts to roll off in real life and if it matches the predicted 3db point of 100k into Miller Cap of D3a triode. Theory says it should be well out of audible range, of course. cheers, -- ...
- Mon Sep 03, 2007 7:52 am
- Forum: Assorted Stuff
- Topic: Rapid Valve Sockets
- Replies: 7
- Views: 7321
- Sun Sep 02, 2007 8:12 pm
- Forum: Everyones Projects
- Topic: DTBs 6B4G
- Replies: 361
- Views: 220052
No, well certainly not as silly as the idea I had last night....I had this odd thought for PSU for an amp I've been scheming up, a MC no step up phono amp. The PSU will be a buggar, so I thought what about a series stack of 12v sealed lead acid batteries, paralleling them up to charge them dead quie...
- Sun Sep 02, 2007 6:33 pm
- Forum: Assorted Stuff
- Topic: Audio Jumble, Kent.
- Replies: 16
- Views: 12936
- Sun Sep 02, 2007 5:01 pm
- Forum: Everyones Projects
- Topic: DTBs 6B4G
- Replies: 361
- Views: 220052
- Sun Sep 02, 2007 12:02 pm
- Forum: Everyones Projects
- Topic: DTBs 6B4G
- Replies: 361
- Views: 220052
Other than the pentode, that aikido driver stage is the same as the one I used to driver the 300b's in Doncaster. In that case it was another 6n6p as JRB front to a aikido, with a ecc40 before that. Simon, the driver you heard driving the 6c33c's was also very similar, in that case it was a ecc83 (...