Class D Amp with LM566,LM393 and 2XIRF530

[tiefbassuebertr]

I guess, this both IC models from SGS-Thomson are available for a long time:

TDA7492
http://www.st.com/internet/com/TECHN...CD00244535.pdf
Distortion Tests - HifimeDIY T2 / LJM L20D / SURE TDA7498
TDA7498
http://www.st.com/internet/com/TECHN...CD00205863.pdf
Sure Electronics -- New low cost 25w-100W board
SMSL SA-50 - Verstärker, Lautsprecher, Zubehör - Analog-Forum

Originally Posted by RaiTulo

Or ICL8038 ICL8038
Detailed Schematic page 4

Thank you. Here the datasheet-URL:
http://www.intersil.com/data/fn/fn2864.pdf

[tiefbassuebertr]

supplement to last post (ICL8038):
Intersil's application note "ANO13.1":
http://www.intersil.com/data/an/an013.pdf

[apexaudio]

I can't find simple 'diy frendly' functional amp on this forum... this is JBL full bridge 500W amp with TL072, IR2111 and 4xIRFP250, work good with 18inch PA sub. Next is CREST clone with NE5532, LM319 and IR2113...

[Eva]

Originally Posted by apexaudio

I find nice UcD amp like Hypex in service manual of philips mini system, pcb is for stereo but with SMD parts.

Hi Apex, if you ever decide to go deeper into class D, use this one as a reference, it's state of the art unlike the other stuff posted.

[apexaudio]

Originally Posted by Eva

Hi Apex, if you ever decide to go deeper into class D, use this one as a reference, it's state of the art unlike the other stuff posted.

I need more references like this Onkyo and Sony, or diy class D amp like this http://www.youtube.com/watch?v=HJhOOJ4qTOc

[tiefbassuebertr]

Originally Posted by apexaudio

I can't find simple 'diy frendly' functional amp on this forum... this is JBL full bridge 500W amp with TL072, IR2111 and 4xIRFP250, work good with 18inch PA sub. Next is CREST clone with NE5532, LM319 and IR2113...

about the thread
Building a 1000W @ 8ohms class D amplifier from zero
there is also to find an interesting approach.
Actually it would be helpful to create a Class-D evaluation board, to find out the pros and cons of various topologies and sample rates - with discrete devices of course (or quasi-discrete with standart ICs like drivers, comparators, VCO's and operational amplifier).
Who is able to develope such an evaluation board?

[elevator]

Originally Posted by tiefbassuebertr

Actually it would be helpful to create a Class-D evaluation board, to find out the pros and cons of various topologies and sample rates - with discrete devices of course (or quasi-discrete with standart ICs like drivers, comparators, VCO's and operational amplifier).
Who is able to develope such an evaluation board?

Agreed, and since I need such a "sandbox" myself, I am re-targeting the one in this thread for that purpose. One difficult decision is SMD vs. through-hole: SMD is not DIY-friendly, but through-hole drastically restricts the choice of eg modern drivers, and places limits on speed. Currently I'm playing with partitioning concepts, i.e. have a TH base board and SMD daughterboards.
Stay tuned...

[apexaudio]

JBL new class D amp

[apexaudio]

Triangle oscillator from FBT

[apexaudio]

Error amp, triangle osccilator, comparator ...