[gaetan8888]

Kapton has high electron mobility so I think it would be very hard for it to hold any kind of charge.

 
Hello
 
Even if I coat the Kapton with graphite powder ?
 
Thank
 
Bye
 
Gaetan

 

[gaetan8888]

Hello
 
I've just received few sheet of 6 micron Hostaphan.
 
How about using that Hostaphan ?
 
Thank
 
Bye
 
Gaetan

 

[chinsettawong]

Hostaphan should be as good as Mylar.  Go for it.  

 

[-JFK-]

Hi Wachara,

Witch software do you use for CAD and for the CNC (GCode?)?
Thank you.

 

[chinsettawong]

I take my gears to a local DIY meeting today.  Our theme this time is DIY VS Vintage.  Many people take their amplifiers and loudspeakers to the meet.  Here are some photos that I take at the meeting:
 

 

 

 

 

 

 

 
I let them try out my Orpheus Clone and JF Clone.  Most of the people prefer JF clone for its wider sound stage and more relax feeling.
 
Wachara C.

 

[chinsettawong]

By the way, I've upgraded my KGSSHV to KGSSHV Carbon.  It's very gooooooood.  

 

[bui501-tech]

  I take my gears to a local DIY meeting today.  Our theme this time is DIY VS Vintage.  Many people take their amplifiers and loudspeakers to the meet.  Here are some photos that I take at the meeting:
 
...
 
 
I let them try out my Orpheus Clone and JF Clone.  Most of the people prefer JF clone for its wider sound stage and more relax feeling.
 
Wachara C.

Wachara,
Let me know the next time there is a local meeting. 
Cheers,
Vinh

 

[OnyxOcelot]

Hi -JFK-
 
Could you let us know a bit more about the amp you are building?  Or show us a schematic?
 
 
I have built several pairs of ES Headphones for my 'normal' (230V) bias Stax energizer, but would like to build headphones and speakers with a higher bias requirement.  I have very little experience with circuit design, but am working my way slowly through a circuit design coursebook ("Learning the Art of Electronics," if anyone is interested), and would like to design a similar variable-bias amp when I am able.  
 

Any guidance is appreciated!
 
Thanks,
OO
 

  Hi all, 
 
I'm waiting the 0.6 and 1.6mm PCB. So I'm "building" a simple amp based on :
-IcePower 50ASX2 : http://www.icepower.bang-olufsen.com/files/solutions/icepower50asx2_datasheet_1_5_20150709.pdf
-Triad VPL2-10000 : http://www.mouser.com/ds/2/410/VPL2-10000-781293.pdf
So the ratio of the transformers are : 1:180.
 
(The left part of the setup is the bias) 

 
I'm happy for a first try, that work !
 
Then I received a sample of Antistatic liquid for the coating : Staticontrol AS90E40 :

 
Any remarks ?
Regards.

 

[-JFK-]

Hello,

I have choose the lazy way for this first try.
For the bias I finally use that : http://www.ebay.co.uk/itm/131581679768
But they are very noisy, I will have to build my own.

For the step-up transformers I have wire it like that:


My CNC is ready. I will start soon building the cells.

 

[-JFK-]

Hi Wachara,

Witch software do you use for CAD and for the CNC (GCode?)?
I'm using Solidworks for CAD but have some difficulties to generate GCode...
Thank you.

 

[OnyxOcelot]

Thank you -JFK- !
 
I would also like to build a similar variable-bias power-supply soon, but need to spend a great deal more time learning about high voltage electronics first!  
 
Also, I use Solidworks for CAD, and output .DXF files to Vectric Cut2D (http://www.vectric.com/products/cut2d.html) to generate G-Code.  It works fine once you've figured out which post-processor (which determines G-Code parameters) works for your particular CNC.  What are you using to run your CNC?  An Arduino, or dedicated computer?  
 
OO

 

[-JFK-]

Hello,

I use an arduino with GRBL.
Find the righ post processor is my current problem...

 

[-JFK-]

Hello!

First try!
For spacers, no problem :



But for stators... I have to buy carbur drill!
The HSS are not strong enough...

 

[chinsettawong]

For PCB drilling and routing, I use something like these:
 

 

[Muamp]

Hi Wachara C.
 
I have been meaning to post some photos of my now boxed TubeCAD energiser and some more CNCed FR4 panels, but I have not had a chance to use the workshop for the last 3 months,..... I fell at work and broke my leg and hip,... hospital, wheelchair, two crutches and now just one crutch!.. Tomorrow I start CNCing again! I just finished boxing the TubeCAD energiser before the accident.
Now for some serious panel building.
Whilst recovering, I got hold of a Stax SRM-252s energiser and SR-207 headspeakers. I know they are bottom of the range, but my panels on the SRM-252s sound good!
 
David.