Class AB+D schematics

ionutgaga · 9th August 2006, 01:42 PM

I want to build an amplifier in this class. I see on Yamaha, Sunfire, Bash, and probably others. But i not found any concrete schematics. Is anyone who have this sch?
L.E. The most big amplifier i have made it, is supply +/-145v class H, 4 tier (+/-50, 85, 110, 145v)

Workhorse · 10th August 2006, 03:48 AM

Quote:

Originally posted by ionutgaga
L.E. The most big amplifier i have made it, is supply +/-145v class H, 4 tier (+/-50, 85, 110, 145v)

Hi,
Switched rail or Modulated rail, which type did you made in Class-H.....
As you say its 4 Tier, it must be a Switched Rail type, is it full range or Subwoofer amplifier...Would you share the schematic....
regards,
K a n w a r

ionutgaga · 10th August 2006, 07:04 AM

Switched rail, as you see (+/-50, 85...). The switched schematic is from QSC PL6, PL9. The audio is from ElectroVoice P3000 (floating grounded bridge). In time i will post the full schematic and photos.
Is verry efficient, comparative to EV P3000 (class AB), is smaller, transient response is better.
I see EV, Dynacord build class AB, then class H 2 tier, now class H 3 tier. The next step is probably modulated power supply (AB+D).
My wish is to build this class (maybe +/-150v, modulated offcourse). And please email me anything about this class, if you wish.

L.E. My most big amplifier drive cool 4 x PD1850 (mounted in pair in planar wave guide)

L.L.E. Where do i find romanian-english translator?

ionutgaga · 10th August 2006, 07:04 AM

The schematics

ionutgaga · 10th August 2006, 07:48 AM

The schematics

ionutgaga · 10th August 2006, 09:05 AM

The schematics

ionutgaga · 10th August 2006, 10:05 AM

The schematics

ionutgaga · 10th August 2006, 10:34 AM

The schematics

ionutgaga · 10th August 2006, 10:40 AM

The schematics

ionutgaga · 10th August 2006, 10:51 AM

The schematics

9th August 2006, 01:42 PM	#1
ionutgaga diyAudio Member Join Date: Jul 2006	Class AB+D schematics I want to build an amplifier in this class. I see on Yamaha, Sunfire, Bash, and probably others. But i not found any concrete schematics. Is anyone who have this sch? L.E. The most big amplifier i have made it, is supply +/-145v class H, 4 tier (+/-50, 85, 110, 145v)

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10th August 2006, 07:04 AM	#3
ionutgaga diyAudio Member Join Date: Jul 2006	Switched rail, as you see (+/-50, 85...). The switched schematic is from QSC PL6, PL9. The audio is from ElectroVoice P3000 (floating grounded bridge). In time i will post the full schematic and photos. Is verry efficient, comparative to EV P3000 (class AB), is smaller, transient response is better. I see EV, Dynacord build class AB, then class H 2 tier, now class H 3 tier. The next step is probably modulated power supply (AB+D). My wish is to build this class (maybe +/-150v, modulated offcourse). And please email me anything about this class, if you wish. L.E. My most big amplifier drive cool 4 x PD1850 (mounted in pair in planar wave guide) L.L.E. Where do i find romanian-english translator?

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