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Old 11th June 2010, 08:23 PM   #1
mihailo is offline mihailo  Serbia
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Default 200W PA amplifier

Power amplifier 200W AB class. Power supply +/-60V max.
Do anyone want to DIY something like that?
Attached Files
File Type: pdf Power amplifier raspored.pdf (48.6 KB, 607 views)

Last edited by mihailo; 11th June 2010 at 08:35 PM.
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Old 11th June 2010, 08:32 PM   #2
mihailo is offline mihailo  Serbia
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Quote:
Originally Posted by mihailo View Post
Power amplifier 200W AB class. Power supply +/-60V max.
Do anyone want to DIY something like that?
Attached Files
File Type: pdf Power amplifier raspored.pdf (48.6 KB, 359 views)
File Type: pdf Power amplifier PCB mirror.pdf (22.8 KB, 314 views)
File Type: pdf Power amplifier parts.pdf (34.5 KB, 325 views)

Last edited by mihailo; 11th June 2010 at 08:39 PM.
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Old 11th June 2010, 08:37 PM   #3
mihailo is offline mihailo  Serbia
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PCb and parts.
Attached Files
File Type: pdf Power amplifier PCB mirror.pdf (22.8 KB, 207 views)
File Type: pdf Power amplifier parts.pdf (34.5 KB, 204 views)
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Old 11th June 2010, 09:08 PM   #4
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Is there any "Power amplifier schematics.pdf"?
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Old 11th June 2010, 09:11 PM   #5
mihailo is offline mihailo  Serbia
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Sorry, I don't have schematics. But I will write it for pdf. and attach soon.
Regards
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Old 18th June 2010, 01:09 AM   #6
mihailo is offline mihailo  Serbia
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Default spliter

Audio spliter
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File Type: png Audio Splitter.png (31.1 KB, 676 views)
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Old 18th June 2010, 08:25 AM   #7
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Regards Mr. Mihailo. please send Circuit Pdf for 200waats amplifier,and your new article Audio splitter circuit , Pcb ,layout and component Pdf thanking you Vedmitrasharma from city of Tajmahal.You can send on my id vedmitrasharma9@rediffmail.com if you wish .
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Old 18th June 2010, 11:28 AM   #8
AndrewT is offline AndrewT  Scotland
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200W into 8r0 from a maximum of +-60Vdc is a mighty achievement.

But, your pdf shows +-56Vdc.
How do you get 200W into 8r0 through a 4pair output stage from that combination?
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Old 18th June 2010, 11:46 AM   #9
mihailo is offline mihailo  Serbia
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I didn't wrote anywhere 200W into 8r0. With BD249C/250C you can get 200w into 4r0.
You can replace BD249/250 with 2SC3263/2SA1294, BD139/140 with MJE340/350 and BD243/244 with MJE15032/15033 , and two resistors 3.3K/2W with 4.7K/2W , and you can raise voltage to +/-75V than you will have 200W 8r0.
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Old 18th June 2010, 11:53 AM   #10
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It's a redesigned Elektor-PA300 with poor output stage (BD249C/250C >>> SOA problems).

(100r resistor must be 5...10r in the Zobel circuit!)
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