50W SEM amp.

[pre65]

SEM = single ended mosfet.

Using 1 X IXCS IXFN140N20P mosfet per channel, and another one as a CCS.

So four big mosfets in total, and a circuit courtesy of "papa Pass".

I'm just collecting parts at the moment, already found two 15A 60v EI transformers and got some lovely heatsinks a while ago.

Photo to follow when work commences.

[pre65]

I'm making two boxes for the power supplies at the moment, from 18mm BBP.

The pieces are all cut (by hand saw), and are now being routed to the exact size.

Stage 2 is to rout all the joins so they go together square.

[Richard]

Nice one Philip, is it a finished circuit or a "try this" ?

[pre65]

Originally Posted by Richard

Nice one Philip, is it a finished circuit or a "try this" ?

Well, I suppose it's a "try this" at the moment.

There is a thread on DIY Audio about it , and by the time I've got to the point of finishing it I hope someone else will actually have one working.

I'm still in routing BBP mode at the moment.

[Richard]

Ah ok thanks Philip, had a quick look there but couldn't see it. Be interesting to hear how you get on (What's BBP btw - Baltic Birch Ply?)

[pre65]

Originally Posted by Richard

Ah ok thanks Philip, had a quick look there but couldn't see it. Be interesting to hear how you get on (What's BBP btw - Baltic Birch Ply?)

Yes, BBP = Baltic Birch Ply.

I had a full sheet (1200 x 2400) in stock so decided to use some.