Rosemary Ainslie circuit demonstration on Saturday March 12th 2011

[Groundloop]

Rosemary,

You can also put the transistors like this onto a heat sink.

GL.

[Rosemary Ainslie]

Rosemary,

You can also put the transistors like this onto a heat sink.

GL.

That's bang on Groundloop.  Excellent.  My friend had them separated by about 4 inches.  But it's the same thing. 

Many thanks.  A picture's always worth a thousand words. 

Kindest regards,
Rosie


Added. 

And just to let you know.  We'll do a repeat of that replication on Sunday afternoon.  Solemn promise, thereafter I'll post those screen shots.  Don't know why I didn't manage it yesterday.  Could be that the flashdrive is full.  But I've got another.  Sorry about that.

[neptune]

@Groundloop . I could be wrong here , but is the body of the mosfet that bolts onto the heatsink internally connected to one of the pins? If it is , then 2 separate heatsinks would be needed .

[Rosemary Ainslie]

@Groundloop . I could be wrong here , but is the body of the mosfet that bolts onto the heatsink internally connected to one of the pins? If it is , then 2 separate heatsinks would be needed .

Hello Neptune.  I might have the answer here.  All that's needed is as Groundloop has shown - that there's insulation between the body of the FET and the sink itself.  We used an insulation paste - but possibly better as Groundloop's shown it.

regards,
Rosemary

[Groundloop]

@Groundloop . I could be wrong here , but is the body of the mosfet that bolts onto the heatsink internally connected to one of the pins? If it is , then 2 separate heatsinks would be needed .

@neptune,

The "white" stuff under both transistors is conducting heat but not electricity.
So the metal under the transistor is not in direct contact with the heat sink.

Regards,
GL.