I thought the krill was a "orphan" but now I see its commercial
equivalant.. the marantz 300dc. The marantz has the same
current stage but a balanced VAS (like symasym).
http://www.diyaudio.com/forums/showthread.php?s=&threadid=136237
Very interesting ,The marantz gets it's NFB from the OP,unlike the Krill.
I might use this stage as a building
block too..
OS
equivalant.. the marantz 300dc. The marantz has the same
current stage but a balanced VAS (like symasym).
http://www.diyaudio.com/forums/showthread.php?s=&threadid=136237
Very interesting ,The marantz gets it's NFB from the OP,unlike the Krill.
I might use this stage as a building
block too..
OS
Steve Dunlap said:
Hi Steve
For sure lots of people is reading and learning out of this thread on daily base. 🙂
Please Steve, show us your skills in machining. Did you also make your own heat sinks?
PS. When you attach someones answer to your reply, make a mark in the little white square in the right corner (Quote).
Steve - this thread gets 16200 hits ;
it seems that's some interest ........
but generally - sometimes lack of comments is just proof that things are sorta clear 😉
it seems that's some interest ........
but generally - sometimes lack of comments is just proof that things are sorta clear 😉
That is right, what I would like to know is how the current
stage is thermally compensated.
It might be a dumb question but I could find no reference
to it in the thread.
ostripper said:
look pic here :
http://www.diyaudio.com/forums/showthread.php?postid=1701021#post1701021
Hi Steve, Thanks for share your very interesting design.
I will make a try very sooner.
But, as you asked for errors on schematic, I did find a missing connection between the node of two zeners to ground, in Power supply schematic. (both 50 and 100W versions)
Regards,
Marcos
I will make a try very sooner.
But, as you asked for errors on schematic, I did find a missing connection between the node of two zeners to ground, in Power supply schematic. (both 50 and 100W versions)
Regards,
Marcos
Hi Steve,
Just another correction - the boards you sent out have C3 & C4 which isn't on the schematic sent with the boards - I believe these Cs are correctly shown on your recently posted 100W schematic.
Also, early in the thread you mentioned you would be post high power schematic (which you've done, thanks) & circuit improvements. Are there any other suggested circuit improvements besides the DC offset R30&R31 bypassed with pots ?(on the latest 100W schematic)
Just another correction - the boards you sent out have C3 & C4 which isn't on the schematic sent with the boards - I believe these Cs are correctly shown on your recently posted 100W schematic.
Also, early in the thread you mentioned you would be post high power schematic (which you've done, thanks) & circuit improvements. Are there any other suggested circuit improvements besides the DC offset R30&R31 bypassed with pots ?(on the latest 100W schematic)
I saw what looks like some sort of daughtercard to
mount a to-92 to heatsink...BUT ,what trannies are they on
schematic???
OS
OStripper is correct - in the stuffing guide there is a daughter card with a Q, R, D C component - this is beside the 3 diodes you refer to MJL. The actual boards only come with a small daughter board for the 3 diodes which act as thermal bias correction. So maybe the other components were also related to this function? Steve will clarify, I'm sure
MJL, that's the daughter board that comes with the main board but the stuffing guide document shows Q, R, D & C components alongside the 3 diodes (for some other board perhaps?)
jkeny said:
Hi,
I haven't been involved with this thread - just popped in to have a look. Reading, as juma and Zen Mod suggest, post 27 and 29 confirms the thermal tracking is via a diode string.
Zen Mod said:
you meant post #29 ?
😉
Of course it is 🙂 Actually, reading through a thread is usually very beneficiary 😉
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