2stageEF high performance class AB power amp / 200W8R / 400W4R

[astx]

R24, R25: discharge lytics. The small DC current which can flow through 44R is too small to offset your toroids working point...

 

[Walkalone]

Thanks Tony,

Waiting for your new amps. So many things to learn.

Regard,

 

[astx]

AC mains DC Blocker

... got pcbs ...

BR, Toni

 

[thimios]

Beautiful!
Is it a simple way to know if a d.c voltage is present in main voltage?

 

[astx]

AC mains DC Blocker

... using a 50/60Hz filter ...

WARNING: very dangerous to measure! DO NOT DO IT unless you know what you are doing!


You not always have DC on mains. It depends on the devices that are currently consuming power.


BR, Toni

 

[thimios]

Thanks Toni, yes i know main isn't forgiven.

 

[diyralf]

Hi astx,

2017.03.16 the last entry at the index. We are waiting for new exciting projects!
;-)

 

[astx]

+1

... currently cabling SA2017 IXYS MOSFET amplifier. Of course index is a bit outdated. The next weeks I will have more spare time for my beautiful hobby!
So much to do for a new lab - we not only need hardware for assembling and testing, also a stable and redundant IT system:

• LAN cabling
• LAN switches
• new measurement pc with 2 GPIB busses (powered by opensuse leap15)
• installed a new backup server with 12TB space using linux software raid6 (powered by opensuse leap15)
• reinstalling development pc using fast SSD disk
• ...

OK - maybe a bit oversized, but this is my "Ferrari" just for fun!
Will be offline for a few hours - home-web-mail-server (powered by opensuse leap15) will be migrated using a SSD for the operating system ...

BR, Toni

 

[diyralf]

The very very cold winter will come and that makes the hobby electronics even more fun!

 

[astx]

+1

 

[tubestrek]

Hi Toni,

amazing thread. As I am also planing to build an amp heavily influenced by Self, I totally love you build - actually I am asking myself, if I need to do any planing...
Anyway, awesome stuff!

 

[astx]

Thanks for your interest!

Yes - the simplicity of the Blameless and the outstanding performance always fascinates me. Of course other designs are also simple and are delivering good performance but often any safety circuits are missing...

BR, Toni

 

[astx]

ASTX LABS - SA2017 VMOS IXYS

... started the cabling journey ...

 

[thimios]

... started the cabling journey ...

I hope that will not a long journey
Regards.
Thimios.

 

[astx]

ASTX LABS - SA2017 VMOS IXYS

... updated cabling status ...

 

[astx]

ASTX LABS - SA2017 VMOS IXYS

... mostly finished ...
just need to do

• RCA cables
• power switch/leds soldering
• temperature sensors
• AC 230V cables

BR, Toni

 

[Kay Pirinha]

Tony,
did you really use yellow-green coded wires to the speaker output terminals??
Best regards!

 

[astx]

sorry, yes. I have too less cable colors. maybe black would be a better looking signal ground color...

 

[Vrystaat]

Superbbb looking sir !!

 

[astx]

ASTX LABS - SA2017 VMOS IXYS

Thx!

Cable length mostly fits. Only speaker cables are a bit too long - will be corrected.

Have fun, Toni