Free PCBs
Yes am giving away 50 free PCBs right away 😀, check them out here http://www.diyaudio.com/forums/vendors-bazaar/227813-50-free-symef-pcbs.html#post3325792
Yes am giving away 50 free PCBs right away 😀, check them out here http://www.diyaudio.com/forums/vendors-bazaar/227813-50-free-symef-pcbs.html#post3325792
Thank you for all of you who have joined this adventure 😀 . Share with us your build progress and pictures. 😉 .
Once finished provide your reviews as SYMEF gently whispers those first notes and probably sweeps your heart away 😀
Then let us know, in your own ears...what you think
Once finished provide your reviews as SYMEF gently whispers those first notes and probably sweeps your heart away 😀
Then let us know, in your own ears...what you think
Alrighty then...
Could not find BOM for the new PCB that just arrived. They say type 2 on them and although there is a section for them on the website, there is nothing in the BOM part. I took the BOM from the Type 1 section and converted it to the Type 2 board. All of the part numbers now match the part numbers as listed on the PCB.
So, are the parts the same for both BOMs if their values match? There are two parts missing, C8 a 220uf that looks to be electrolytic and R32 a 7.5, I would assume R. Would someone care to specify those parts? If all this is correct I would be happy to share.
Could not find BOM for the new PCB that just arrived. They say type 2 on them and although there is a section for them on the website, there is nothing in the BOM part. I took the BOM from the Type 1 section and converted it to the Type 2 board. All of the part numbers now match the part numbers as listed on the PCB.
So, are the parts the same for both BOMs if their values match? There are two parts missing, C8 a 220uf that looks to be electrolytic and R32 a 7.5, I would assume R. Would someone care to specify those parts? If all this is correct I would be happy to share.
Last edited:
OK C8 and R32 still need to be speced out.
I added current prices from Mouser and DigiKey. Also have the BOM as specified saved at both if anyone wants them...
Also can email SS as they don't allow XLS attachments.
I added current prices from Mouser and DigiKey. Also have the BOM as specified saved at both if anyone wants them...
Also can email SS as they don't allow XLS attachments.
Last edited:
Thanks Billy. Will go through it. Note the ground isolation resistor can be a jumper or a 7.5 ohm resistor. C8 on type2 is really C1 on type1
I got my PCB's! 🙂
They are really nice!
Would it be problematic if I'd use a 44VAC transformer (so around 60VDC) in the power supply?
They are really nice!
Would it be problematic if I'd use a 44VAC transformer (so around 60VDC) in the power supply?
Parts for the PCBs are on order. Unfortunately the diodes (D5,6) and one of the outputs (Q4) are on back order until late Feb. Need to get the PSU stuff together now. Not real clear on just what I am going to do here tho...
Nice going Billy, you can try two PSU s
1. The one on the site
2. http://www.diyaudio.com/forums/power-supplies/216409-power-supply-resevoir-size-169.html#post3309702 (Thats if you like to experiment 😀)
First question (I'm afraid a lot more will follow 🙂 )
Can't seem to find a reason for the symef rev 2 board so can only assume it's there because it has a smaller footprint? (cheaper to manufacture dare I say?) Or is there more to it then that?
Can't seem to find a reason for the symef rev 2 board so can only assume it's there because it has a smaller footprint? (cheaper to manufacture dare I say?) Or is there more to it then that?
C8 on Type2 is C1 on Type1, which is rated 6,3V, so anything that is 6,3V or higher will do fine.
So C1, C8 & C10 are all bi-polar cap's rated at 6,3V. C1 & C10 100µF and C8 220µF, correct?
Regards
Regards
No, C10 is rated 10V, so, just to be on the safe side, I'd use (at least) 10V on all three caps.