Green Ringer

by gaussmarkov

Green Ringer Layout

Once there was a friendly comparison of green ringer layouts on Aron’s forum and I laid out a smaller version than this one. Coming back to it recently, I decided to add some space and show off the symmetry of this circuit. is the source of the schematic.

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10 Responses to “Green Ringer”

  1. chris said:

    I’ve read that one should make sure the transistors are matched in the Green Ringer. Is this really necessary and if so, how does one go about matching transistors?

    Posted 13.11.2007 at 7:06 pm

  2. gaussmarkov said:

    Hi chris!

    I don’t think the transistors are the key thing. The place you need symmetry is with R6 and R7, with C2 and C3, R8 and R9, diodes D1 and D2, and R11 and R10.

    If you are using 1% (metal film) resistors, then you can check them with a DMM but any pair you choose will probably be very close. With the capacitors there is much more variation, so definitely use a DMM to match those.

    I’m a little shaky on diodes, so I’d check those with a DMM also. My guess is that most pairs will come out similar there too. But I would check.

    There’s a lot of discussion of this sort of thing on Aron’s forum. I highly recommend checking there. Use the search function and type in “green ringer matched.”

    You have to register to get access to the search function. But that’s easy and no cost. It’s all benefit. 😉

    Posted 13.11.2007 at 9:27 pm

  3. chris said:

    Thanks for your time and advice!

    Posted 14.11.2007 at 5:04 am

  4. Tony said:

    I `m trying to find a diagram to add a tone control or toggle switch to kill the treble so I don`t have to roll the tone knob back on my guitar when I switch it on every time

    Posted 29.04.2010 at 5:37 am

  5. Tony said:

    I want to add a tone control to this circuit or which cap can i change to take out treble?

    Posted 28.11.2010 at 2:28 pm

  6. sgRED said:

    Posted 28.10.2011 at 8:52 am

  7. DIYtechgear said:

    Love this little circuit and it’s symmetry. This was a fun pedal to build and sounds very neat when placed after a fuzz pedal (EX. Big Muff Pi). I believe it sounds best when playing individual notes ie, scales!

    Thanks Gauss!

    Posted 17.01.2012 at 3:05 pm

  8. chuck said:

    is it just me, or it is printing super tiny? both the cad file and the pdf

    Posted 31.01.2012 at 5:30 pm

  9. Tony said:

    so no one knows how to add a tone control to the ringer curcuit?I tried every thing I can think of.I would like to see a hand drawn diagram of how to do this and would pay to see how you can do it,I dont like having to roll off the tone control on my guitar to do this as I have it bypassed on alot of my guitars any way.if anyone has an idea please help.

    Posted 30.08.2012 at 5:28 am

  10. sgRED said:

    Posted 20.01.2013 at 12:12 pm