Another layout of LM4780

cccp · 14th February 2005, 10:23 PM

Sch

cccp · 15th February 2005, 07:56 AM

size: 2.12 *1.30 inch2

cccp · 15th February 2005, 07:56 AM

top silkscreen

cccp · 15th February 2005, 07:56 AM

the PCB was drawn with PADS2004. If need, i will post the pcb file.

Tarzan · 15th February 2005, 10:09 AM

Ki, Yep if possible post the PCad files.
Thanks

Tarzan · 15th February 2005, 10:11 AM

Sorry, the PADS files
Thanks

cccp · 15th February 2005, 10:35 AM

here the pcb file.

theChris · 15th February 2005, 06:25 PM

i haven't built this exact pcb, but one of similar dimensions:
1.2" by 2.2".

i found from my board:
1.) mounting holes are not needed
2.) you probably will need to mount the capacitors last as they will likely sit very close to the IC's mounting holes. and it may become impossible to secure the IC once the caps are in place. this may mean the amp will be permanently mounted to a heatsink.
3.) pads were small. the wires ended up soldered to the metal surfaces.

my design used vertical mounted through hole resistros and wider 1000uF capacitors. this design's taller? capacitors may be fine.

15th February 2005, 06:25 PM	#8
theChris diyAudio Member Join Date: Dec 2001 Location: SIUE, Illinois, USA	i haven't built this exact pcb, but one of similar dimensions: 1.2" by 2.2". i found from my board: 1.) mounting holes are not needed 2.) you probably will need to mount the capacitors last as they will likely sit very close to the IC's mounting holes. and it may become impossible to secure the IC once the caps are in place. this may mean the amp will be permanently mounted to a heatsink. 3.) pads were small. the wires ended up soldered to the metal surfaces. my design used vertical mounted through hole resistros and wider 1000uF capacitors. this design's taller? capacitors may be fine. __________________ if only it could be used for good, not evil...

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15th February 2005, 10:09 AM	#5
Tarzan diyAudio Member Join Date: May 2004 Location: Genk	Ki, Yep if possible post the PCad files. Thanks

15th February 2005, 10:11 AM	#6
Tarzan diyAudio Member Join Date: May 2004 Location: Genk	Sorry, the PADS files Thanks

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