Hi Terry,
Prasi here from India. I must congratulate you on the excellent layout with a common DIY'er in mind. I am a beginner and still in the process of learning layout and try to follow some of the generalized trace layout techniques commonly used. I have attached herewith my layout, which is nothing but a copy of your layout but I tried to keep the traces bends with 45 degree angle and if a 90 deg bend cant be avoided, some extra copper at the 90 degree bends is kept.
Sincerely I do not know if such technique is indeed helpful for the audio / analogue circuits. I think Mr. Mile or yourself or someone with lot of experience can only clarify.
Mr. Mile's circuits generally do not follow this "rule" of 45 degree bends, may be I am worried about nothing.
regards
Prasi
Attachments
Hi Prasi,
I am brand new to using layout software. The layouts I have posted were made by starting with a layout that Juan Vargas had done for the F100 and modifying it to fit the FX100. I have heard about the 90 degree rule bout I'm not sure how important it is. Your layout looks very nice.
I am brand new to using layout software. The layouts I have posted were made by starting with a layout that Juan Vargas had done for the F100 and modifying it to fit the FX100. I have heard about the 90 degree rule bout I'm not sure how important it is. Your layout looks very nice.
Terry appreciated the layout posted by me, to which I replied
Meaning, its all Terry hard work in doing the layout, I just tried to add some features, (which may not be important).
I didnt mean any harm. I hope I am in clear Mr. Vargas.
actually you are correct sir Terry did all the work I only help a little bit
Best Regards
Juan
my point exactly. 45deg or 135 deg. not 90deg. or acute bends.
Ref1: http://www.ti.com/lit/an/scaa082/scaa082.pdf (page 14)
ref2: http://www.nxp.com/documents/application_note/AN10798.pdf(page 5)
Like I said in earlier post, I do not know if the principles are applicable for audio circuits. They may be applicable to high speed clock signals/ digital circuits.
reg
Prasi
Thanks for the info. As I said, I am in the very early stages of learning to use layout software so all hints and tips are welcome. I just started playing around with an other amp layout in which the designer used Dip Trace. That software has opened up a whole different set of possibilities and has shown me some more techniques. A lot to learn. Fortunately, this is a hobby and I have no deadlines to meet.
Blessings, Terry
Blessings, Terry
The amp is a hybrid IPS designed by Borys. Idefixes made a layout for it to match up with the Slewmaster OPS. He designed that layout in Dip Trace so I downloaded that software. It goes about things differently than Sprint so I am learning even more. Doesn't hurt that it was free.
Nice thing about playing around with these programs is I don't have to buy parts to have fun learning.
Blessings, Terry
Nice thing about playing around with these programs is I don't have to buy parts to have fun learning.
Blessings, Terry
Hi Mr. Mile,
Can F100 work with 3 pairs of o/p devices? I want to create a layout for it for diy for anyone interested.
regards
Prasi
while still waiting for an answer to above question, I made a layout of the 2 pair version. One more pair can be added if Mr. Miles gives a go ahead. Any comments on the layout are also welcome, its just a draft layout without the beautification.
One interesting fact that I came across while browsing through the thread is that same layout can also accommodate lateral fets (2SK/2SJ) by just changing (removing) 3 components and a different value resistor. It would be interesting to compare sound of IRFP vs latfets on the same layout.
sch for both are somewhere in the beginning of thread (page 20).
Reg
Prasi
.One interesting fact that I came across while browsing through the thread is that same layout can also accommodate lateral fets (2SK/2SJ) by just changing (removing) 3 components and a different value resistor. It would be interesting to compare sound of IRFP vs latfets on the same layout.
sch for both are somewhere in the beginning of thread (page 20)
.Reg
Prasi
Attachments
while still waiting for an answer to above question, I made a layout of the 2 pair version. One more pair can be added if Mr. Miles gives a go ahead. Any comments on the layout are also welcome, its just a draft layout without the beautification
One interesting fact that I came across while browsing through the thread is that same layout can also accommodate lateral fets (2SK/2SJ) by just changing (removing) 3 components and a different value resistor. It would be interesting to compare sound of IRFP vs latfets on the same layout.
sch for both are somewhere in the beginning of thread (page 20)
Reg
Prasi
Nice pcb, go to post #35 for your answer
yes 3 pair can be use but I suggest FX100 schematic from post #472.Regards
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Nice pcb, go to post #35 for your answer
Regards
Thanks for the reply Mr. Mile. I already posted a layout for FX100 in http://www.diyaudio.com/forums/solid-state/162081-dc-servo-mosfet-amplifier-53.html#post4453756 for the two pair version (based on terry's layout.
I will make a layout for 3 pair FX100 version.
Can Fx 100 be used with latfets with some changes like F100? I want to compare sounds of latfet and IRFP. also what would be max supply voltage for 3 pair version?
and thanks for PSU+Protect scheme.
reg
prasi.
FX100 3-pairs
Mr. Miles,
Here is a draft layout of FX100 with 3 pairs for your comments. Would like to know if this can be run at 70VDC with same components?
I have added some caps for supply rails of fets and also 22r on positive rail like olafK (he is not too active these days on DIYA). He is an inspiration for this layout.
regards
Prasi
Mr. Miles,
Here is a draft layout of FX100 with 3 pairs for your comments. Would like to know if this can be run at 70VDC with same components?
I have added some caps for supply rails of fets and also 22r on positive rail like olafK (he is not too active these days on DIYA). He is an inspiration for this layout.
regards
Prasi
Attachments
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