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Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Amplifier Discussion => Topic started by: markorock37 on March 30, 2012, 03:00:25 PM

Title: Power supply for LM1875 chipamp
Post by: markorock37 on March 30, 2012, 03:00:25 PM
Building a chipamp based on a LM1875. I'm using 2200uF caps in the amp circuit and a 34.5vac transformer. Really the only question I have is what size filter caps to use after the rectifier.
Title: Re: Power supply for LM1875 chipamp
Post by: J M Fahey on March 30, 2012, 03:20:12 PM
A couple 2200uF caps will be fine.
If you want to use 4700uF ones instead, it won't hurt.
Title: Re: Power supply for LM1875 chipamp
Post by: markorock37 on March 30, 2012, 08:22:30 PM
Thanks a ton! Just about have everything soldered except those and a power switch and led. Should be quite the little jammer!
Title: Re: Power supply for LM1875 chipamp
Post by: joecool85 on April 03, 2012, 10:10:37 AM
Enjoy it, I found that I liked the sound of the LM1875 better than the LM3886.  Not sure why as both should be totally "clean" and not "coloring" the sound at all.
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