Re: solid state magnifier...accidentally...cool!

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

LM12's are also a bit pricey at $17-18 each
They claim power bandwidth of 60 kHz, though, so it's at least in the area.

My experience with monolithic high powered opamps (granted, in a linear
moderate precision application) has been that you spend a lot of time and
money on power supplies and surrounding components.  They're not plug and
play by any means.

You also might have a bit of an impedance matching challenge. The part is
limited to 10A output current and 25V output voltage.  A nice match for a
2-4 ohm resistive load, but not necessarily for a tesla coil.


Tesla list wrote:
> 
> Original poster: "spoonMAN by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<spoonman534-at-yahoo-dot-com>
> 
> <snip>
> 
> > Of course, I'll be using a 555 driven 2N3055....
> > However, I'm hoping to aquire some higher power mosfets
> > soon, the 2N3055s
> > don't like anything over 20 volts. They are just little
> > heaters :-))
> 
> Has anyone considered using a high powered OP-AMP such as
> the LM12? It's capable of delievering 10A at 15V output
> swing (on 30V supply).. max power rating of about 80W and
> the data sheet gives schematics for cascading them for
> higher output.. I don't remember if the slew rate is high
> enough for TC frequencies though..
> 
> Ben McMillen
> 
> 
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