The diyAudio Firstwatt F6

[2 picoDumbs]

only 7.5mm lead space?

JP

Someone might have another brand of cap with smaller lead spacing.
Good to have both 5mm and 7.5mm lead spacing options.

 

[2 picoDumbs]

Resistor to ground in feedback loop only needs to be 0.5W cmf55, but allowing space for 1W CMF60 might

be appreciated by some people.

 

[JPS64]

Version with solder tags (visible posts at ends of power resistors) enabling if desired/needed paralling of degenerating resistors. Working in Z axis to reduce overall PCB dimensions and if stacked, better power distribution (mounting PCB parallel to main heatsink).

Collecting more comments to, one day (I hope soon), fix the design for prototype. For the moment I´m missing more interested diy´er.

Still waiting for PCB board level transformer shielding.

JP

 

[2 picoDumbs]

Nice Creative solution.

 

[2 picoDumbs]

Version with solder tags (visible posts at ends of power resistors) enabling if desired/needed paralling of degenerating resistors. Working in Z axis to reduce overall PCB dimensions and if stacked, better power distribution (mounting PCB parallel to main heatsink).

Collecting more comments to, one day (I hope soon), fix the design for prototype. For the moment I´m missing more interested diy´er.

Still waiting for PCB board level transformer shielding.

JP

This version fixes all issues with the original pcb.
The only thing required to gain new interest would be to show Nelson using your pcb with 32V rails, and his new Cinemag transformer.
That would raise some eyebrows.

IXTH64N10L2 can easily dissipate 60W


Or just label your pcb F6 Nitrous.
Quite a few motor heads around here.

 

[JPS64]

Transformer PCB board level shielding.

Board Level Shielding Configurable Sales Drawing PDF Download Page



JP

 

[JPS64]

Saturday progress...

Actuaally without top silkscreen.

JP

 

[2 picoDumbs]

Bloody beautiful.

 

[JPS64]

still N2O nitrousy!

 

[2 picoDumbs]

Which heatsink model is that one?

 

[JPS64]

Simply M3 (#5) drilled piece of aluminium.

Retaining spring:
THFK 220, Retaining springs for transistors, Heatsinks f.cool, Fischer Elektronik

JP

 

[Bare]

Bloody beautiful.

Erm Ok Remembering of course that's only a Sketchup image.
Most Anybody can make / concoct an image using Sketchup.
IF willing to spend the screen time on it.
Far.... more convincing to see a Photo.

 

[JPS64]

I´m waiting for transformer board level shielding quotation (needs to be symbol defined and routed) before ordering PCB.

110x103x2mm, 70µm, HAL, green, white top silkscreen, batch of ten.

P.S.: all my board are 3D modelled before ordering for last check and believe me, the model is not far realistic from the produced boards.

JP

 

[JPS64]

and then it "should" like this.

All nice sunday afternoon...

JP

 

[Nelson Pass]

For M2's, I just bought some mu metal (by the foot) from McMaster-Carr
and folded it.

Worked fine, very cheap, quick delivery.

 

[JPS64]

for M2 I've used COTS from TEKO (Edcor is less height then Jensen or CineMag).

I don't know the costs for this custom etching one, still waiting.

JP

 

[JPS64]

F6 NITROUS and his power supply finished.

Preparing fabrication datas for batch of 10 ordering (still waiting for M2 batch).

JP

 

[JPS64]

PBA´s.

JP

 

[2 picoDumbs]

Ok put me down for a stereo pair

 

[fabrice63]

Is this "new" F6 been tested "musicaly" and "sonically" and mesured before , or it is one more F6 on the road , and what 's Nitrous for , I did not follow the entire story !!!

just wonder if it's a step forward

.