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Chip Amps Amplifiers based on integrated circuits

chip amp with 500va +50v0-50v toroidal ????
chip amp with 500va +50v0-50v toroidal ????
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Old 13th March 2018, 03:02 PM   #1
moranta46 is offline moranta46  Europe
diyAudio Member
Join Date: Mar 2018
Location: Sa Pobla, Mallorca
Default chip amp with 500va +50v0-50v toroidal ????


I would like to know if there is any possible project with this transformer.

500va +50v 0 -50v
secondary +10v 0 -10v

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Old 13th March 2018, 03:19 PM   #2
DPH is online now DPH  United States
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Join Date: Dec 2008
Location: Portland, OR
Plenty, look at something like the slewmaster or honey badger pcbs through this site. Rectified, your 50v rails are way too high for any of the common chip amps though. So took you'll need to look at discrete designs.
Happy DIYing, Daniel
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Old 13th March 2018, 04:19 PM   #3
Samsara is offline Samsara  France
diyAudio Member
Join Date: May 2011
2 power transistors + class AB chip like LME49830.
Or 2 power transistors + class D chip like IRS2092.
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Old 15th March 2018, 10:40 AM   #4
penjoseph is offline penjoseph  India
diyAudio Member
Join Date: Mar 2008
Location: Bangalore
With hybrid chimp-amp STK series one can go to high voltages +80 0 -80.

The potential of STK404x series are under looked due to their age factor.

I tried STK4048XI (fully complimentary NPN - PNP driver stage) coupled with extra four power transistors - 2x 2SA1943 & 2x 2SC2500 - in the output. With this topology to boost chipamp power one can extract copious amount of power. My objective was to drive a subwoofer. Tested working right from +12 0 -12 to
+60 0 -60

Not seen anybody in the forum do this with STK series.
Attached Images
File Type: jpg STK4048IX-trans.jpg (365.6 KB, 56 views)

Last edited by penjoseph; 15th March 2018 at 10:50 AM.
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