[R-390] OT: Pass Transistor Question

[Barry]

> Andy said what the resistors are for.  I would typically use more than 0.1 
> ohm for 2N3055s, say 0.22 or 0.33 ohms.
<snip>
> Don

I was wondering what an optimal value would be.  In the handbook, it shows 
two 2N3055's in parallel with 0.3-ohm resistors.  In the second example, it 
shows three 2N3055's with 0.45-ohm resistors.  I assume the effective total 
extra resistance stay constant this way (0.15-ohms).  I'm not sure why the 
author of that article used 0.1-ohm resistors and was wondering what an 
optimal value might be.  I assume a bit more is better to a point.

BTW, all this talk about higher current draw got me to thinking about the 
main filter cap (I happened across a discussion of this on another page). 
It is only 5,000uF in the original design, but I figure that if I do ever 
use this for a lot more current draw, it will need quite a bit more than 
this so am looking for something a bit more substantial in this area as well 
(30,000uF to 50,000uF or more).

Thanks again,

Barry