Many thanks for sharing your experience on this device, Anthony.
If it is good for you, than it can only be good for me... I will wisely follow your recommendation.
And I will as well regarding the amp's PSU low voltage and high current bias 🙂
Many thanks again Anthony for your great advices and this very informative and helpfull thread
Claude
http://www.digikey.de/short/zbhfrh
R3 + R4, R33 + R34, R40 + R41 + R3A + R4A, R26 and C1 replaced because of availability. Quantity based on references - there are one or two positions with less count than references mentioned. If 10 parts were less expensive than 8 the 10 were chosen for using the discount.
Edit: I prefer those caps over the UCC mentioned in the BOM - but that's personal taste. But there is sufficient stock at digikey in comparison to the UCC.
@fab: If you don't want to have this in the public please tell so. I would distribute it via PM to users who have bought the PCBs instead...
R3 + R4, R33 + R34, R40 + R41 + R3A + R4A, R26 and C1 replaced because of availability. Quantity based on references - there are one or two positions with less count than references mentioned. If 10 parts were less expensive than 8 the 10 were chosen for using the discount.
Edit: I prefer those caps over the UCC mentioned in the BOM - but that's personal taste. But there is sufficient stock at digikey in comparison to the UCC.
@fab: If you don't want to have this in the public please tell so. I would distribute it via PM to users who have bought the PCBs instead...
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Cheers @nfsgame - thanks for putting this up! Just checking, if I use the list and checkout that I won't muck it up for everyone else?
When you checkout using this list it will stay - it's just a link that's adding the components to your basket (if this was your question 😕).
Glad to be of help ClaudeG
All thanks to Fab, now I not only believe but appreciate the hard work he did to optimize all his projects.. No lacking in anything. Despite small hickup, all parts is soldered once and perfect delivery.
Enjoy the build! I love my amp, it's scary good now as it eases her way to final phase of burn in..
I had noticed that there is an extra contact/hole for these hintsinks on the PCBs, possibly for a heatsink pin? (3 holes on the PCB, 2 sides the active part, one on the other side of the heatsink)
Found these heatsinks at the same price - seems to be the same heatsing with a pin.
Nous faisons des dissipateurs de chaleur de 20 pieces 40*14.5*9.5mm a 220/TO220 rayonnement de radiateur en Aluminium avec trou de vis M3 et aiguille | AliExpress
Now of course you may not need that pin/connection at all with ethe PCB, I believe I can see on pix that Anthony did without. And in fact that extra pin might be PITA to fit for nothing, especialy if not properly aligned or not the right diameter, hence doing without?
Just thinking out loud
Claude
Found these heatsinks at the same price - seems to be the same heatsing with a pin.
Nous faisons des dissipateurs de chaleur de 20 pieces 40*14.5*9.5mm a 220/TO220 rayonnement de radiateur en Aluminium avec trou de vis M3 et aiguille | AliExpress
Now of course you may not need that pin/connection at all with ethe PCB, I believe I can see on pix that Anthony did without. And in fact that extra pin might be PITA to fit for nothing, especialy if not properly aligned or not the right diameter, hence doing without?
Just thinking out loud
Claude
Hi ClaudeG
The pcb does have a hole for the middle pin heatsink and only for mechanical support. Unfortunately the hole size is to small so you will have to remove the heatsink middle pin (easily done).
Thanks for pointing that out.
Fab
The pcb does have a hole for the middle pin heatsink and only for mechanical support. Unfortunately the hole size is to small so you will have to remove the heatsink middle pin (easily done).
Thanks for pointing that out.
Fab
I had noticed that there is an extra contact/hole for these hintsinks on the PCBs, possibly for a heatsink pin?
These pins are used to tie the HS to some appropriate electrical potential wrt the transistor's Drain/Collector potential, so as to either reduce EMI or stray capacitance.
Didn't study the schematic further than that, but this is a linear circuit in LF (so no EMI troubles to be expected here) with strong drive and I'd rather leave it floating to avoid adding stray pF IMO.
Cheers.
Kalamin;
These pins are used to tie the HS to some appropriate electrical potential wrt the transistor's Drain/Collector potential, so as to either reduce EMI or stray capacitance.
Didn't study the schematic further than that, but this is a linear circuit in LF (so no EMI troubles to be expected here) with strong drive and I'd rather leave it floating to avoid adding stray pF IMO.
Cheers.
Kalamin;
Thanks for reporting Vunce. It was quick shipping🙂
I thought you had already ordered the parts 😉
Fab
I thought you had already ordered the parts 😉
Fab
All the expensive parts are in hand 😉
Just need the nuts and bolts parts. I think PRP’s might be appropriate on the black board 😛
Indeed, shipping was quick!
Just need the nuts and bolts parts. I think PRP’s might be appropriate on the black board 😛
Indeed, shipping was quick!