My Excel 2007 doesn't open it. Maybe you can save it as a plain txt file or .xls file?
Thanks
Layout is OK.
Thanks - good thing too as I ordered the boards already
Is the photo above of the 5cm x 5cm layout? Any tricks to building this amp or pretty straightforward? Is the heatsink for the TO220's needed?
Looking for a datasheet for those. All I've found are motor controllers under BD639... Also searched diyAudio. Only found one mention and it was a typo... If BD639 is correct, could you point me to a datasheet, please?
Correct. I should have consolidated those two entries. I was using this spreadsheet to create my PCB layout library.
Changed to UES1E100MDM.
Correct. My entry is wrong. I figured that out as I laid out the board and I overlooked that correction.
. Changed to Bourns 3296W-1-102LF
Will do! Thanks for your help.
BF
I'm new here, so please forgive me if responding is a faux pas...
I'm not trying to be insulting - I'm pretty sure that these types of questions and answers don't belong on an audio forum. Answers to basic computer questions (and we all have such questions from time to time) are more fully dealt with elsewhere and are very easily Googled.
You need to install SP2 for Office 2007 to support ODS.
Alternatively, as I suggested previously, you can install OpenOffice, open the file yourself, save it as XLS, and then deal with it in Excel, assuming that is your preferred tool.
BF
Sorry, I should have been more explicit. What I meant was BD139 and BD140 (The TO-126 devices.), which you had already mentioned in your updated schematic but not in BoM. So I thought correction in BoM would be helpful for others. link https://www.fairchildsemi.com/datasheets/BD/BD135.pdf.
Also hfe classification 16 (BD139-16 and BD140-16) would be better as used by RickG.
Also as suggested by Mr. Mile, 2SA1360 and 2SC3423 are better alternatives, (which you have already mentioned in BoM.)
reg
Prasi
There is a small trick
to set up the amp and its in http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-628.html#post4616387 post no.6276.Yes heat sink for TO-126 is suggested by designer, Mr. Mile.
reg
Prasi
No problem, thanks for the BOM. I installed Open Office as my Excel was 2002 and did not have extension available.
FX8 BOM BJF Rev 1.2
Sorry. It was late/early. I should have remembered the BDs' numbers.
Corrections included.
Thanks,
BF
Sorry. It was late/early. I should have remembered the BDs' numbers.
Corrections included.
Thanks,
BF
Use Nichicon 47uF/63V and Panasonic 1000uF/16V or other same size capacitor for my layout other.
100uF/63V will not fit use 47uF/63V instead. Other capacitor from benz2 BOM will fit.
Regards,
Sonal Kunal
In addition to above, for the terminal block something like this would be suitable 1546216-3 TE Connectivity | Mouser
Sonal, Prasi: Thanks!
I've revised my version of the FX-8 BOM.
(I hope I've understood your guidance correctly)
BF
Thanks - good thing too as I ordered the boards already
Is the photo above of the 5cm x 5cm layout? Any tricks to building this amp or pretty straightforward? Is the heatsink for the TO220's needed?
I have had if playing music all day today. It's a really sweet amp. You can probably do without the little heatsink on the VAS. It only runs at about 10mA with the bias set at 100mA. The little sheet metal sink I have on it get only warm. I will leave it in case it helps with thermal stability. There are no issues that I have found. You can simply follow the silk and have no problem. There is still a slight overshoot on the square waves but it sounds lovely so I'm not sure I would mess around any further.
Blessings, Terry
Terry, can you please measure the voltage across R2 in this schematic:
http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-131.html#post4641883
Also, who made the BC546 you put there? I just want a datapoint for this transistor...
http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-131.html#post4641883
Also, who made the BC546 you put there? I just want a datapoint for this transistor...
I read 56mV across R2. I'm not sure who made the BC546C transistors. They were a gift from BobEllis. I was building the SKA and needed the C grade and couldn't find them. He was kind enough to send me some. Here is a picture if that will help.
Blessings, Terry
