[Amps] ARF1505

[Steve Thompson]

On Monday 23 May 2005 21:41, Gene Bigham wrote:
> OK, is the tail wagging the dog?  Are we hypothetically reverse engineering
> an available device with all these limitations and drawbacks because it is
> available?

Yes, but the specs. appear attractive. What's not immediately obvious is that 
this device has been engineered to do a particular job. It's not intended to 
be used broadband, and it's not intended to be linear and this affects the 
design of the silicon making it difficult to do those things.

>  Should we instead be asking the solid state manufacturers to
> come up with a suitable device? A solid state replacement for a 3-500 at a
> 300 VDC potential would be nice! Anyone know how to go about making such a
> request?

I guess that if it was straightforward, they'd have done it a while ago. If 
it's not straightforward then it costs a lot of money to develop and the 
result has to have commercial return. A 250W 50V broadband bipolar costs 
$60ish and that's a tough target to better. If you wanted to look into it, 
then you will probably find folks to talk to at APT (Santa Clara), Pointnine 
Technology or Semelab.

A 300V 3-500 tube would also be attractive but (as far as I know) no-one has 
done that either. 

Steve