Here's Pete Moore's RangePig - an adaptation of Rangemaster with single low gain germanium transistor configured with modern silicon counterpart as darlington. Note that this is a positive ground effect, so you can't daisy chain this with other boxes that use negative ground. A simple pump is always your friend.
You do realise February is just round the corner don't you? Ha ha
ReplyDeleteI'm just trying to make the january the craziest ever. Let's then see if anyone can beat that... :D
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requesting a similar circuit....Briggs' Rangemaster MKII. :)
DeleteThanks a lot, Miro, this evening I'll give this one a try! I've got a 50hFe ac128 that is waiting to be mounted in a strip like that!-D
ReplyDeleteOne month later:-P... Yes, I tested it and sounds great, I checked with 2 transistors, one 50 and another one 122 hFe and it goes from trebly warm overdrive with 50, to much more dirty than I need in a booster, but it's a good thing to have the chance to test it...both them very warm. Just one thing if others build this, Level Pot is reversed, the 3 is 1. And I also put another pot instead of a trimmer if someone else want to try this too, the upper leg pin in the stripboard is the pot 3rd leg.
ReplyDeleteThanks a lot!
Great, thanks for verifying Sergio. Miro will no doubt update the layout when he sees this.
DeleteOnce again mispercieved the unmarked pot on the schematic :)
DeleteFix is coming up like now.
Thanks!
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ReplyDeleteI really like the idea of the Ge/Si Darlington. How easy would it be to make this NPN? I have lots of NPN Si trannies and some low Ute AC176s.
ReplyDeleteI meant low hfe AC176s...
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