Tuesday 29 January 2013

Rangepig

Seems like i'm on fire with the requests today...

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.


10 comments:

  1. You do realise February is just round the corner don't you? Ha ha

    ReplyDelete
    Replies
    1. I'm just trying to make the january the craziest ever. Let's then see if anyone can beat that... :D
      +m

      Delete
    2. requesting a similar circuit....Briggs' Rangemaster MKII. :)

      Delete
  2. Thanks 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

    ReplyDelete
  3. One 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.
    Thanks a lot!

    ReplyDelete
    Replies
    1. Great, thanks for verifying Sergio. Miro will no doubt update the layout when he sees this.

      Delete
    2. Once again mispercieved the unmarked pot on the schematic :)

      Fix is coming up like now.
      Thanks!
      +m

      Delete
  4. This comment has been removed by the author.

    ReplyDelete
  5. is it too much to ask to add the off board wiring in the same diagram??? like I have failed on 3 straight pnp builds.. I have no idea how to do it, and I have read all I could. No one explains it at all. It's like its for some special country club or something.... Add the putain diagrams of the wiring... merde...

    ReplyDelete