| clipto333 |
hi,
I need the schematic and board files for parellel lm3886tfs. i tried making a schematic in eagle but its really difficult for me. This is my first project. im going to etch the pcb myself as i cant get it made here in my city.
im going t make a single sided pcb. if anyone can help making a board design in eagle that will be excellent. ill post the pic of the schematic taken from http://www.shine7.com/audio/pa100.htm.
need board design for the psu also.
and
aso suggest which ps is better.
please guys help me.
cheers
clipto |
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| abid_rehan |
You can use following layout for monoblock and with slight modification you could parallel it. I made it for a friend, since I am not a big fan of 3886 there I never did a parallel or bridge for it otherwise its justa a matter of modifying the layouts for parallel or bridge. As for PSU I dont think you need a regulated PSU for gainclone.
LT 1083/4/5 has regulation volatages from 3.3 to 12 v which does not fullfill power requirements for 3886, and for LM317 you would need a transistor stage to improve output current of 317.
Normally a regulated supply is not used for gainclones. |
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| abid_rehan |
| schematics are as follows: |
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| Fenris |
| Do you prefer SMT or through hole components? I have a single sided SMT design for an inverted LM3886 that will work with bridge or parallel. The only through hole components are a DC offset adjusting resistor and the larger capacitors. |
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| clipto333 |
| quote: | Originally posted by Fenris
Do you prefer SMT or through hole components? I have a single sided SMT design for an inverted LM3886 that will work with bridge or parallel. The only through hole components are a DC offset adjusting resistor and the larger capacitors. |
hi,
please send the files of your inverted lm3886.
can you explain what to use in library fo resistors caps etc. i dnt know how build a board design with exact dimensions of resistors caps etc.
also if anyone has the files for eagle or any other software of pa100 amp can you post it here? i need software files.
please help
thanks
clip |
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| Fenris |
| I'll post it tonight when I get home. I don't use Eagle, I use FreePCB. I can export to Gerber though. |
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