LM3886 circuitry

jmillerdoc · 5th June 2009, 06:27 AM

Can someone tell me if the circuitry of the chip amps is class A or class AB. I would think it was AB. Please help me out here.
Thanks,
Jeff M.

pacificblue · 5th June 2009, 10:08 AM

It is AB. The heat dissipation of class A would not be manageable in a chipamp package.

peranders · 5th June 2009, 10:36 AM

I don't know any class A chip amps for that matter.

jmillerdoc · 5th June 2009, 01:25 PM

Thats what I was thinking as well, they don't make that much heat at all....not enough to be class A. I was asked specifically about it on a Gainclone I built and put up for sale on one of the many auction blocks on the web. I am still a newbee and learning alot. I have built about 10 of these things just for fun.....they started collecting in all of the shelves and closets in the house so the wife said some of them had to go. Of course by listing them on eBay and Audiogon you get questions....I just wanted to tell the guy who asked me "I don't know, I just built it from a kit!"
Thanks again!
Jeff

5th June 2009, 06:27 AM	#1
jmillerdoc diyAudio Member Join Date: Mar 2009 Location: Lawton, OK, USA	LM3886 circuitry Can someone tell me if the circuitry of the chip amps is class A or class AB. I would think it was AB. Please help me out here. Thanks, Jeff M.

5th June 2009, 10:08 AM	#2
pacificblue diyAudio Member Join Date: May 2008	It is AB. The heat dissipation of class A would not be manageable in a chipamp package. __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)

5th June 2009, 10:36 AM	#3
peranders Electrons are yellow diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 1	I don't know any class A chip amps for that matter. __________________ /Per-Anders (my first name) or P-A as my friends call me BPA300 Group Buy Round 4, SMD-kit and DRV134 pcb, checking interest Sign up HERE Rectifier bridge RFB03 Group Buy Round 2, checking interest Sign up HERE

5th June 2009, 01:25 PM	#4
jmillerdoc diyAudio Member Join Date: Mar 2009 Location: Lawton, OK, USA	Thanks Thats what I was thinking as well, they don't make that much heat at all....not enough to be class A. I was asked specifically about it on a Gainclone I built and put up for sale on one of the many auction blocks on the web. I am still a newbee and learning alot. I have built about 10 of these things just for fun.....they started collecting in all of the shelves and closets in the house so the wife said some of them had to go. Of course by listing them on eBay and Audiogon you get questions....I just wanted to tell the guy who asked me "I don't know, I just built it from a kit!" Thanks again! Jeff

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