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Old 24th December 2012, 06:46 AM   #121
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Quote:
Originally Posted by gaborbela View Post
Very nice circuit!
Yes indeed, usually we have double matched transistor at input, but here vice versa. Although we can put BC847BPN in input stage in no time.
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Old 24th December 2012, 06:50 AM   #122
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Originally Posted by Jay View Post
Khewwwwlll..... It's very easy for you, huh? Looking forward to see the highest (optimum) power possible with this topology (no less than 100W) without sacrificing the overall performance.
That would be CSA circuit, coming soon.
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Old 24th December 2012, 06:55 AM   #123
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Originally Posted by Idefixes View Post
Hi LC,

need i some value tweakking to keep rail voltage to +/-35vdc as in first version (nice 625Va or 2x300va 2x25vac i have)

Marc
Rails can be +/-35-40V DC without any tweaking. This 1.1 version is just having a little more housekeeping, otherwise the same.
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Old 24th December 2012, 06:57 AM   #124
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Originally Posted by Lazy Cat View Post
Rails can be +/-35-40V DC without any tweaking. This 1.1 version is just having a little more housekeeping, otherwise the same.
Thats cool....will spend a more little time on eagle.

Marc
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Old 24th December 2012, 09:26 PM   #125
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Here some tryout. BC847BPN is solder on bottom side. Board mesure 80x82mm
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Old 24th December 2012, 09:37 PM   #126
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Hi Marc

Thank you for the PCB gift

Marry Christmas dear friends
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Old 24th December 2012, 09:45 PM   #127
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Merry christmas to you LC and to all Diygentleman. LC you play Santa role every time you give advice or support diy stuff here...

Marc
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Old 25th December 2012, 09:40 AM   #128
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Exclamation VSSA MosFet Amplifier V1.2

VSSA Amplifier schematic update. RCA input connector and speaker sign with impedance note added. This post is linked to from the first post of the thread to be easy accessible.

Again, this is very good simple amplifier, highly recommended.

Regards Lazy Cat
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Old 25th December 2012, 12:24 PM   #129
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Originally Posted by Idefixes View Post
Here some tryout. BC847BPN is solder on bottom side. Board mesure 80x82mm

Very nice

An interesting option could also be to integrate power supply on this board. To have a simple plug & play amplifier.

Most logical way would be to have one rail on left side and other rail on the right side. That means...looking from left side to right side: dual rectifier diodes (TO220), two 4700/50V caps with SMD 0.15 ohm resistor at the bottom for CRC, main circuit, two 4700/50V caps, rectifier diodes. In short...similar like Fetzilla.


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Old 25th December 2012, 01:00 PM   #130
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Originally Posted by supernet View Post
Very nice

An interesting option could also be to integrate power supply on this board. To have a simple plug & play amplifier.

Most logical way would be to have one rail on left side and other rail on the right side. That means...looking from left side to right side: dual rectifier diodes (TO220), two 4700/50V caps with SMD 0.15 ohm resistor at the bottom for CRC, main circuit, two 4700/50V caps, rectifier diodes. In short...similar like Fetzilla.


P.S.: Merry Xmas to you all too
Have you a link to this particular fetzilla aspect?

Marc
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