Piggybacking Silicon Transistors?

[zombiwoof]

Anyone ever heard of, or tried what this guy is talking about in this message from another board?:

http://modman.blogdrive.com/archive/16.html

Even if it works, could there be any advantage to this over just sourcing lower-gain silicons?

Al

[petemoore]

   Yupp and Yupp, but not really...
  The gain can be adjusted, not that Q swaps can't get you in the HFe pocket you want..

[Dragonfly]

use the search function...search "piggyback"...you'll get tons of info

[brett]

Let's start a rumour that RG is supposed to get $10 in royalties for every piggybacked transistor.
Then, everyone will start using them, and finding amazing mojo in them. 

[R.G.]

 

That's good!

When potatoes were brought back from the New World, people didn't like them for quite a time. The French king is supposed to have wanted to induce their wide use. He did this by planting potatoes in large farms near cities with signs "These plants are reserved for the King only" or the equivalent and posted armed guards. Only the armed guards were very slipshod at night, easy to get around, so people stole the "reserved" plants and developed a taste for them.

[petemoore]

  You say potato, I say pota'to.
  Depends what you like and if you choose from what you got oh.

[MovingInSloMo]

Roger Mayer admits he did it for Hendrix. He said under anethesia from an appendix removal. "Mojo..piggybacked trannies...secret tone secret..modded fuzz faces...must keep secret...oooohhhh!!"

[brett]

Wow !  I never believed that 'til now !


So funny.
...but seriously, for those not familiar with the story, these "piggybacked" transistors work well in silicon fuzzfaces.  They are temperature stable and cheap.  They also provide options that might improve tone, such as (i) going even lower in hFE than offered by the usual transistors with low hFE (e.g. 2N2369A).  This is quite relevant to Q1 in the fuzzface.  (ii) allowing the use of transistors with useful characteristics (I think that power transistors have high input capacitance, a bit like older transistors, so they might be interesting to piggyback).

cheers