Very simple quasi complimentary MOSFET amplifier

[andrewlebon]

quasi Amplifier

Another sucessfull build w ith Phunks PCB now it has been tested
time to order pcb from jlc.

warm regards
Andrew

 

[andrewlebon]

quasi Amplifier

OOPS sorry

 

[Idefixes]

New transformators arrived from TOROIDY : 250Va 2x30Vac audio grade. Package and building suffer any negativ comment. I am very pleased how this compagny take care of customers

 

[Idefixes]

Quasi-nmos case build next step : screwwing heatsink and transfo to the internal wood baffle. It's done by inserting nuts in the wood

 

[Idefixes]

Nuts insertion un plywood

 

[Idefixes]

Putting some holes in bottom plate to provide good airflow through the heatsink fines and in the case itself. The feets are simple drawer knobs from Yelow and blue compagny. Transfo localation will isolated from the rear with a metal sheet connected to ground between transfo and vertical plywood piece that support transfo

 

[Idefixes]

All wood parts will be assembled with biscuit and wood glue. This is the next step. After that i need to machine front and rear face.

 

[DILIP KUMAR]

Nice work

 

[Idefixes]

Thanks.....it's just about milling and assembling wood pieces for moment. It will look different when come the time to apply finishing : 2 coats epoxy resin, automotive primer round with sanding between them, coats of 2K white glossy automotive paint, and finaly high grade wet sanding and polishing with cut polish and finish polish. I will apply too a coat of a good automotive wax

 

[Idefixes]

Morning job ; milling front and rear face to integrate aluminium plate supporting power switch on front and power/speaker/line connector on rear

 

[zman01]

Good see progress happening Idefixes.

Chassis work takes time, but has to be done. 🙂

 

[Idefixes]

Good see progress happening Idefixes.

Chassis work takes time, but has to be done. 🙂

Yes it takes a huge amount of time.....even when it is a wood chassis through all steps to have a acceptable final finish. Tomorrow evening chassis should be glued, and aluminium plate cuted and drilled. Next step will be sanding and apply two coat of 2 parts epoxy resin

 

[Idefixes]

Some more progress : first chassis is glued all aluminium plate are cuted I want to mill a 3mm wide 45° rabet on each vertical visible edge from rear and front face

 

[2pist]

Are there any boards for this project still floating around? If so I'll take a pair.

 

[avtech]

I've got a couple of Phunk Borg style I can send over for postage cost if you don't mind waiting for air mail from Oz?

https://www.diyaudio.com/forums/sol...mentary-mosfet-amplifier-163.html#post4884803

 

[evanc]

I have boards I could send for postage. They are dacz layout and I’ve built them up so I know they work.

 

[2pist]

What are the sizes respectively? I'm hoping for something close to 3 x 4.5 Inches.

 

[e_fortier]

The one from Marc and Prasi would fit your needs.

 

[evanc]

The boards I have are very compact. If you look back in the thread you’ll find dacz layout and the build I did with home etched boards. The ones I have now were professionally manufactured.

 

[zman01]

This link below takes you to a post with an image of the Dacz PCB:

https://www.diyaudio.com/forums/sol...mentary-mosfet-amplifier-216.html#post5440903

Maybe Evan can confirm if this is the same PCB that he has. The marking on the PCB mentions dimensions of 76mm x 69mm.