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Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Mon Dec 24, 2012 1:02 am
by Fred
TODO updated, next up is cap and ground lift mounting. Then find fuse holders that are suitable. Lastly, I'll wire up the power supply and test that.

After that I wait for the heatsink to arrive, schematics to be drawn up, or do them myself, PCB layout to be done, or do it myself, then order, assemble, and enjoy!

NO! I _STILL_ haven't found any reasonable secondhand speakers to buy :-( This might be the biggest challenge of all.

Fred.

Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Tue Dec 25, 2012 5:53 pm
by Fred
Today, what better to do than assemble some heavy-duty circuits! Pics to come in next post, but for now: TODO updated!

Current TODO consists of:
  • Install new power socket/switch/fuse
  • Bolt down both bridge rectifiers
  • Figure out how to mount the filter caps and do it
  • Wire up all power supply components and test
And then finally:
  • Get schem/layout done

Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Tue Dec 25, 2012 9:45 pm
by Fred
In order:

1) Snubber caps on main bridge
2-6) Ground lift circuit

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Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Thu Jan 03, 2013 10:12 pm
by Fred
Heat sink arrived! It has a somewhat "Don't fuck with me!" look to it, so I thought I'd play the same part for the shot:

Image

Usually I'm smiling in photos, so today I thought I'd be different. This is as close as I can fake to "Furious Fred" like the one that appears when people nearly run him over in Barcelona.

Fred.

Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Thu Jan 03, 2013 10:43 pm
by SleepyKeys
Wait a minute, that pic looks familiar........
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Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Thu Jan 03, 2013 10:49 pm
by Fred
ROFL! Copyright infringement!!! :-o So I stole it back. Cached here as you've lost files from your server in the past ;-)

Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Thu Jan 03, 2013 11:37 pm
by SleepyKeys
Infringe this!!!!!
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Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Fri Jan 04, 2013 12:35 am
by Fred
I sure hope that this amp doesn't make any smoke! :-(

Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Fri Jan 04, 2013 12:48 am
by SleepyKeys
With that heat sink, I think you are covered. I would be more worried about gun smoke from your neighbors, after you turn the volume up :)

Re: Simple Cheap Compact IC-based High Performance Amp

Posted: Fri Jan 04, 2013 1:14 am
by Fred
ROFL!