From what I got, it was a method of imitating Ger. transistors with Si transistors, I thought sounded interesting, as I am going to build a FF type clone. Seems the idea died down.
Quoting modman's post here:
Postby modman on Thu Nov 01, 2007 3:29 am
sosodef wrote:I wonder could that range control work on a fet based boost?
Anyone find any success with silicone in the rangemaster?
My dad always told me and again last week: just act normal. But I can't. I was going to build a nice GE FUzz and GE Rangemaster to check out the mojo. Couldn't stick to that plan anymore once I read Brett's Piggybacking thread at diystbxes. I built a piggyback Fuzz and a piggyback Rangemaster
I couldn't believe that he thread died out on a 'oh we found some low gain si so we stopped experimenting.' This was the ticket to building a fuzz almost two random couples of cheapo transistors. Strange boutiquers haven't picked this up yet...
1. Take two identical random silicon transistors (for more mojo: your fav fuzz silicons
2. Tie the BASES together,
3. Cut off one COLLECTOR
4. connect a 3k to 6k resistor between the EMITTER of the collectorless devicr and the EMITTER of the other transistor.
By varying the resistance, you can dial in the gain you want...
Read more here:
or try Brett suggestion of low gain SI for your Rangemaster?
Quote from: brett on 20-09-2006, 05:27:28
After word got out about the qualities of the 2N2369A (hFE about 70), I mostly lost interest.
allow me to quote from the above thread. Maybe I should do some clips with my piggybacked Rangemaster tomorrow....
RG wrote:« Reply #7 on: 20-09-2006, 22:30:54 »
It's only a suspicion, but I'll bet that the gain reduction does not remain constant across a range of values of base current.
Since the active base has an effective Shockley resistance and the passive one does not, it would be moderately amazing if the gain reduction was linear.
This is probably a Good Thing, in that it is even more asymmetrical than a transistor all by itself. It may be more Fuzz Face-y than a realy germanium FF.
It's worth some more testing.