For the main filter caps, 18000uF 63V should work ok. The other alternative is to back the secondary voltage down a bit.
All references to FODM3011 changed to 3012 now.
Front end buffers are BC547C and BC557C
2nd stage level shifters are BC546B and BC556B
Front end buffers are BC547C and BC557C
2nd stage level shifters are BC546B and BC556B
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"For the capacitors, I would rather see the board changed to accept some of the taller 4 or 5 pin capacitors. This would allow the use of 63 volt parts without a reduction in capacitance. In fact the capacitance could be raised above 22,000uF if desired."
I'm on the road, so this won't happen for a few days. I have the PCB outline pattern for the 4 way Panasonic caps, so could add it.
I'm on the road, so this won't happen for a few days. I have the PCB outline pattern for the 4 way Panasonic caps, so could add it.
ok - I have corrected the BOM - added a clear note about gain grade matching and the fact tht you may have to shop around.
Hi PMI,
I would like to have 3 stereo sets for me please. Hopefully, you'll get enough people asking for this. Any chance in knowing how soon this would happen?
Thanks.
Bertrand
I would like to have 3 stereo sets for me please. Hopefully, you'll get enough people asking for this. Any chance in knowing how soon this would happen?
Thanks.
Bertrand
Let's do this: Including you, me, Fab, Pinnochio, we have enough to order as a small number at a prototype discount. Why don't you try to take a count, and I will order whatever number we come up with, on Monday. Last time it seemed that the numbers overlapped a bit between you three.Hi PMI,
I would like to have 3 stereo sets for me please. Hopefully, you'll get enough people asking for this. Any chance in knowing how soon this would happen?
Thanks.
Bertrand
Over the weekend I will check the Gerbers, and get the package ready to go. I don't have much time until then...
If I send the order in early Monday, chances are fair it will ship a week later. If I wait until Tuesday, it may be two weeks...🙄
Has anyone checked the latest documentation? (I have not done that)
Hi PMI,
The count is as follows:
Fab: 2 stereo sets - amp only
Pinnocchio: 1 stereo set
Royber: 3 stereo sets
The documentation has been extensively updated very recently, October 2013 at this link Ovation nx-Amplifier: A 100 W class AB Current Feedback Amplifier
So, overall, for us three canucks, we'd like to get 6 stereo sets. Unfortunately, I'm not sure what Fab means by the amp only comment but I'm sure you understand it.
Thanks for everything!
Bertrand
The count is as follows:
Fab: 2 stereo sets - amp only
Pinnocchio: 1 stereo set
Royber: 3 stereo sets
The documentation has been extensively updated very recently, October 2013 at this link Ovation nx-Amplifier: A 100 W class AB Current Feedback Amplifier
So, overall, for us three canucks, we'd like to get 6 stereo sets. Unfortunately, I'm not sure what Fab means by the amp only comment but I'm sure you understand it.
Thanks for everything!
Bertrand
Ok, great! (so much easier when someone is helping, 🙂
I know that, yes, but has someone read it through? I have not had time, but maybe Bill has done so?The documentation has been extensively updated very recently, October 2013 at this link Ovation nx-Amplifier: A 100 W class AB Current Feedback Amplifier
Hi,
Yes, it seems that Bill_P has gone through the file. There were mistakes corrected by both him and Bonsai.
By the way, I saw what Fab meant by the amp only. Will you be doing the power supply also? If so, I would like that in my kits. I think that Pinnocchio may as well.
Regards,
Bertrand
Yes, it seems that Bill_P has gone through the file. There were mistakes corrected by both him and Bonsai.
By the way, I saw what Fab meant by the amp only. Will you be doing the power supply also? If so, I would like that in my kits. I think that Pinnocchio may as well.
Regards,
Bertrand
No, but I have four left from the last round, not counting mine. Enough for you and Pinnocchio, if you want some.By the way, I saw what Fab meant by the amp only. Will you be doing the power supply also? If so, I would like that in my kits. I think that Pinnocchio may as well...
Hi,
Yes, I would love some for me. As I read the docs, I would need 3 and Pinnocchio 1.
Thanks.
Bertrand
Yes, I would love some for me. As I read the docs, I would need 3 and Pinnocchio 1.
Thanks.
Bertrand
Latest nx-Amp mini order
Including joshvi, I make it:
Fab: 2 sets
Pinnocchio: 1 set + 1 PSU
Royber: 3 sets + 3 PSU
PMI: 1 set
joshvi: 2 sets
----------------
Total: 9 stereo sets plus the 4 PSU boards already on hand
(Payment requests have been sent out by pm)
Including joshvi, I make it:
Fab: 2 sets
Pinnocchio: 1 set + 1 PSU
Royber: 3 sets + 3 PSU
PMI: 1 set
joshvi: 2 sets
----------------
Total: 9 stereo sets plus the 4 PSU boards already on hand
(Payment requests have been sent out by pm)
Including joshvi, I make it:
Fab: 2 sets
Pinnocchio: 1 set + 1 PSU
Royber: 3 sets + 3 PSU
PMI: 1 set
joshvi: 2 sets
----------------
Total: 9 stereo sets plus the 4 PSU boards already on hand
(Payment requests have been sent out by pm)
Hi PMI
It Will be only one stereo set for me after all. I have the original Bonsai version singing so I only need another set to complete the MOSFET output version and compare the 2 . I did the same with the Hiraga Super class A.
Thanks again
Fab
OK, it is 8 sets! If I get payments by Friday, I may get the order in by the end of the week. I think I have time to look at the Gerbers tomorrow night, and they will be ready to go.Hi PMI
It Will be only one stereo set for me after all. I have the original Bonsai version singing so I only need another set to complete the MOSFET output version and compare the 2 . I did the same with the Hiraga Super class A.
Thanks again
Fab
OK, it is 8 sets! If I get payments by Friday, I may get the order in by the end of the week. I think I have time to look at the Gerbers tomorrow night, and they will be ready to go.
Is there any change from the previous version ( I mean layout or parts)?
Or is it only the silkscreen?
I could not have Bonsai to include an easy way to modify the temperature compensation of the VBE multiplier for the MOSFET output I intend to use.... I will have to be creative to find a way with this pcb...🙄
Thanks
Fab
I have no way to compare the gerbers in detail without a lot of manual work, so Bonsai has to answer that one. I believe there have been minor changes to the BOM, and a few corrections, see posts above.Is there any change from the previous version ( I mean layout or parts)?
Or is it only the silkscreen?
I could not have Bonsai to include an easy way to modify the temperature compensation of the VBE multiplier for the MOSFET output I intend to use.... I will have to be creative to find a way with this pcb...🙄
Thanks
Fab
P.
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