Sounds like something in there has a higher resistance than you expect. What are the voltages at the various pints in the supply?
I would have expected a 6-7v TX to give 7.5v
Search found 15743 matches
- Wed Mar 17, 2010 12:20 pm
- Forum: Beginners
- Topic: 7.5V @ 4A filament supply.
- Replies: 18
- Views: 6752
- Tue Mar 16, 2010 11:32 am
- Forum: Assorted Stuff
- Topic: SimonFest
- Replies: 80
- Views: 22972
- Tue Mar 16, 2010 8:03 am
- Forum: Valves
- Topic: Are you sitting comfortably?....
- Replies: 28
- Views: 12250
- Tue Mar 16, 2010 8:01 am
- Forum: Assorted Stuff
- Topic: SimonFest
- Replies: 80
- Views: 22972
- Mon Mar 15, 2010 10:44 pm
- Forum: Assorted Stuff
- Topic: SimonFest
- Replies: 80
- Views: 22972
Lets calm down a bit, If Greg feels he has been offended, then its understandable he is upset, I dont think Andrew meant any such thing, but rather than dragging this out and attracting bystanders, why not, Andrew tell Greg simple that is was not meant as a disparaging remark, and why not Greg, give...
- Mon Mar 15, 2010 5:59 pm
- Forum: Assorted Stuff
- Topic: SimonFest
- Replies: 80
- Views: 22972
- Mon Mar 15, 2010 4:15 pm
- Forum: Assorted Stuff
- Topic: SimonFest
- Replies: 80
- Views: 22972
Fascinating weekend all in all and got to meet more of the guys, must be said both Steve S and Nick are real characters that don't quite fully come across on the forum (although DTB had warned me about Nick beforehand Very Happy ) Must have a word with that Mr Dave... Not sure you saw Steve S thoug...
- Mon Mar 15, 2010 2:06 pm
- Forum: Everyones Projects
- Topic: more on gm70 even more
- Replies: 31
- Views: 15860
so far we have a paralleled 1n4007 for the psu, a hammond 378 cx power tx a hammon 159T choke and a sotwer 8423 interstage I guess you mean series IN4007? Yes, 400 - 0 - 400 will be fine, I would use a full wave with that instead of a doubler though. That will give you something like 1100v. Still n...
- Mon Mar 15, 2010 12:21 pm
- Forum: New Users
- Topic: Nothing in partuicular
- Replies: 2
- Views: 3502
- Sun Mar 14, 2010 5:32 pm
- Forum: Everyones Projects
- Topic: Low Power SE project ( 6EM7 possibly )
- Replies: 121
- Views: 41355
- Sat Mar 13, 2010 11:13 pm
- Forum: Everyones Projects
- Topic: more on gm70 even more
- Replies: 31
- Views: 15860
In fact Ian, I am with Phil, I don't see how this is any different to the other thread. No real design I can see, just a list of unconnected thoughts with no sign of them coalescing into a actual design. I am (as it happens) building what is effectively a gm70 push pull for Ali, and I have built sev...
- Sat Mar 13, 2010 4:14 pm
- Forum: Everyones Projects
- Topic: gm70 help?
- Replies: 9
- Views: 5760
- Sat Mar 13, 2010 3:37 pm
- Forum: Everyones Projects
- Topic: gm70 help?
- Replies: 9
- Views: 5760
OK Nick, I suppose a transformer should be able to operate at it's design limit without getting excessively hot ! 120VA is double the rating actually needed for one GM70 and the transformer is mildly warm to the touch. Well, I would have gone (and for that matter have done in the past) for 70VA per...
- Sat Mar 13, 2010 2:13 pm
- Forum: Everyones Projects
- Topic: gm70 help?
- Replies: 9
- Views: 5760
- Sat Mar 13, 2010 2:06 pm
- Forum: Everyones Projects
- Topic: transformer supplier
- Replies: 25
- Views: 12713