Hi Steen,
Check T3. If I remember correctly, T3 is printed wrong on the silk screen on that pcb.
Check T3. If I remember correctly, T3 is printed wrong on the silk screen on that pcb.
OK
all four IRFs tightly matched that is muuuuuchoooo !!! important for both offsets
be carefull with McMillans ,they are really just estimated,same as Resistors from both outputs to gnd
considering that,I have no mutch doubts
all four IRFs tightly matched that is muuuuuchoooo !!! important for both offsets
be carefull with McMillans ,they are really just estimated,same as Resistors from both outputs to gnd
considering that,I have no mutch doubts
Yeah, thanks for the tip. Its correct that the silkscreen is printed wrong. An irf9610 in that spot needs to be turned 180 degrees. Since I used BC560c in that position, I was careful to make the right connections. I think I got it right at least😉 Its easier to get an overview over the "Kari board"s, than it is the green Rev1 boards, which has some more options and jumpers.dr.strangelove3 said:
ZM, I also match the source and drain resistors for the input pair.
Also the source resistors for the IRFP's will be matched. There will probably be some tweeking of the McMillan resistor value.
Here is a closeup of T3, I think you can make out the connections from that.
Steen
🙂
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steenoe said:
nice to have you to do the drek 😉
any progress from ystrdy 0845 ?
blue ones will be in mail probably tomorrow
Zen Mod said:
I consider it having all the fun🙂 Regarding progress, not much except for the two very tightly matched sets of IRFP240's on the pic😎 Did some matching this morning and had these two superb tight sets out of the effort. (Together with matched sets for two F4 monoblocks, both N- and P-channels.
)My plan is to build the Babbel-X into the case where the Babbelfish is right now. Since a guy borrowed it, I will have to wait until I get it back. I cant blame him for not wanting to return it😀 The beast sounds great😉 I am also waiting for the trafo to show up, since I didnt have a 2x12V on the shelf. All in all, we are on track, though.
Looking forward to see the blue ones. I might frame then and put them over my workspace for inspiration 😎
Steen🙂
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ZM, top amp designer.Zen Mod said:hey Lucky!
lookie - 50125 hits in our thread........... not bad at all
As deserved🙂 I guess the mods can just as well make it sticky.
Lucky Lookie
😀
steenoe said:
nah- we don't wont to be establishment..........this way is funnier,we must not behave and keep with OT posts everywhere
yes- indeed ;
better Lookie than Loki
Zen Mod said:
nah- we don't wont to be establishment..........this way is funnier,we must not behave and keep with OT posts everywhere
yes- indeed ;
better Lookie than Loki
Hi Tom and Looky!
Too much jokes, where is electronics?
if no electronics, girls maybe?
😀
vangelis said:
Hi Tom and Looky!
Too much jokes, where is electronics?
if no electronics, girls maybe?
😀
hehe
like always - amusing Oly.......
my better half,or Alter Ego.........who knows 😉
anyway- this half knows some things which I ( other half) will never know
but- that's no surprise, knowing that he's old almost as his Papa Borbely
anyway
in this moment Babelfish pcbs aren't critical ;
but- just 4 combos of 2SJ109BL left....
finding them again- THAT will be lottery , like always
in this moment Babelfish pcbs aren't critical ;
but- just 4 combos of 2SJ109BL left....
finding them again- THAT will be lottery , like always
Zen Mod said:
Hmmm......
I do have an inventory, and I suppose I could consider selling
some to you, Zen Mod, assuming that it is a not-exceeding-cost-
plus-pizza-and-beer effort.
(you will notice that my terms are slightly more generous than
DIYAudio criterion of pizza only)
one time only deal
😎
/Pass/: Is drinking Bordeaux on a Friday night and is not only in
a generous mood, but can't remember the exact syntax that
Halojoy used for his sign-off. 😉
Papa, you are drunk, making Choky happy to death . . .
I hope your bed is well designed against noise and vibration . . .
I hope your bed is well designed against noise and vibration . . .
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