(This is really embarrassing, I work in an electronics shop (Jaycar) similar to radioshack and while I can sell you the component and speakers and kits...I completely suck at understanding circuits and components, I can solder and build kits by follow instructions but actually understanding what each component does and how it should be applied I completely suck at it)
ok now that's out of the way, down to business
fletcher that sounds great...
i am guessing that's what you meant
http://hyperphysics.phy-astr.gsu.edu/hb ... nereg.html
any suggestions on what type of transistor I should use, obviously a big one? The one i am looking at atm is MJL21193
its stats are TO-264, 200W, 250Vc 16A Ic 25/75 hFE min/max and 8a Ic cont.
would that do that job?, the price is high for them something like $11AUD but really its not a huge amount and i can get them on staff discount
I can get my hands on quite a range, but what would work best...i am guessing the higher wattage ones would supply more power? I can get 12v Zeners in 1 and 5 watts
And i guess i can work the resisters out from the site above, I take it the resister figures won't change even with the transistor in there?