Voltage Doubler / Charge Pump for 18V Dunlop EQ??

[sixstringphil]

I've been powering my Dunlop EQ (M-108) by combining two 9v outputs on my Voodoo Labs power supply. I'd like to free up one of those outputs and was reading about voltage doublers. Most of what I found involved using these to give more headroom to boosts and other pedals that normally operate at 9v. How well would they work to provide 18V to a pedal that actually requires it?

[ibodog]

I used one of these with success in an OCD:
http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=2260&g2_serialNumber=2

I've also used one of these for a distortion/boost with a quad opamp:
http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=40950&g2_serialNumber=1

I think you can use the (newer, cheaper) LT1054 with the first vero layout.  But you have to cut the track between pin 1 & pin 8 and bring in the +9V to pin 8 from the right side of the board.

[mth5044]

Never had experience with the second link, but the MAX1044 layout works well for delievering the voltage.. I've never had it get to exactly 18V but I think the last one I did was measureing 17.6V.

[sixstringphil]

I checked the current draw and it appears to be about 20mA. I also have the option with my power supply of providing 12vdc input.