GREEN RINGER

[timeruins]

so i am looking at a green ringer schematic, i thought i had seen green ringers with knobs but there are none shown on the schem.
anyone know if you can replace any specific resistor a pot before i breadboard it?

[carden]

There's a handful of versions at General Guitar Gadgets

http://http://www.generalguitargadgets.com/index.php?option=com_content&task=view&id=131&Itemid=26

[para]

google image search is your best friend.

http://images.google.com/images?q=Green ... a=N&tab=wi


steven

[carden]

google image search is great.  on the advanced options, choosing: coloration > black and white (and/or filetypes > gif) often helps to isolate a some kinds of schematics.

[Moonibopper]

I think I have everything down to make my own Green Ringer using GGG's RTS PCB. But I want to incorporate a 25K Lin pot for the Null Mod (http://www.generalguitargadgets.com/pdf/ggg_gro_sc_null.pdf?phpMyAdmin=78482479fd7e7fc3768044a841b3e85a) and a DPDT toggle for the Filter Mod (http://www.generalguitargadgets.com/pdf/ggg_gro_sc_filter.pdf?phpMyAdmin=78482479fd7e7fc3768044a841b3e85a). My questions are:
1) For the Null Mod, I just have to place the pot between the 10k (R5) and .047uf (C2) right? With the 10k to lug 3, 2 and 1 jumped, and 1 to .047uf?
2) For the Filter Mod, I can't seem to figure out how to wire the DPDT switch. The only photo I could find is at http://www.super-freq.com/2007/07/green-ringer-with-mods/ but the PCB is different.

Please help! Thanks.

[expanoncolin]

I think I have everything down to make my own Green Ringer using GGG's RTS PCB. But I want to incorporate a 25K Lin pot for the Null Mod (http://www.generalguitargadgets.com/pdf/ggg_gro_sc_null.pdf?phpMyAdmin=78482479fd7e7fc3768044a841b3e85a) and a DPDT toggle for the Filter Mod (http://www.generalguitargadgets.com/pdf/ggg_gro_sc_filter.pdf?phpMyAdmin=78482479fd7e7fc3768044a841b3e85a). My questions are:
1) For the Null Mod, I just have to place the pot between the 10k (R5) and .047uf (C2) right? With the 10k to lug 3, 2 and 1 jumped, and 1 to .047uf?
2) For the Filter Mod, I can't seem to figure out how to wire the DPDT switch. The only photo I could find is at http://www.super-freq.com/2007/07/green-ringer-with-mods/ but the PCB is different.

Please help! Thanks.

Yes, you have it right for the carrier null.  Note that you are not only wiring the pot to 10k, but also the emitter of Q2 - the junction of those two pins.

For the DPDT, notice that SW2a and SW2b are labeled on the schematic.  These are both halves of the DPDT.  If you look, they are kind of triangular shaped, with one connection having an arrow pointing out of it.  Each half corresponds to one column of three lugs on the DPDT switch.  The connection with the arrow is the middle lug, and the other two connections are the outer lugs.

-Colin

[Moonibopper]

Thanks for the help as always. So, I drew a dumbed down wiring scheme to confirm with you (attached.) Few more questions:

1) Do two of the lugs (as drawn) remain unconnected?
2) I thought this was to choose between the three different capacitors. Is that not true? I guess I'm a little confused as to what the Filter Mod accomplishes as it's wired.
3) This is the run-of-the-mill DPDT switch (Radio Shack) not the special "on-on-on" kind, right?

Thanks.

[expanoncolin]

1. Yes
2. I believe it just switches in or out a filter.
3. Yes

Good luck!

-Colin