DUMB newb question re: charge pumps

Started by pinkjimiphoton, July 30, 2011, 01:23:50 PM

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pinkjimiphoton

hi guys, need a bipolar 9 volt supply for a pedal i built a while ago, rg suggested using an lt1054cp.

so i made up a vero for it...i know it's probably slightly larger than necessary, but i wanted to have physical room for the components to fit..sometimes a tite layout can be a pain in the...

anyways, would some kind individual be so cool as to look at it for me, and see if i screwed the thing up??

thanks!!!!! hoping to get this in the pedal this afternoon so i can gig with it tonite.

  • SUPPORTER
"When the power of love overcomes the love of power the world will know peace."
Slava Ukraini!
"try whacking the bejesus outta it and see if it works again"....
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slacker

Looks good to me except the 9V - Term and ground rows need connecting together with a jumper or just connect 9volt - term and the bottom of C2 to the ground row and save yourself a row.

I take it Q1 is polarity protection?

pinkjimiphoton

nah, q1 is a switch...when you plug in, it connects to the ring terminal on the input jhttp://www.diystompboxes.com/smfforum/index.php?action=post;topic=92930.0;num_replies=1ack and powers the circuit. its from rg's circuit on geofex for powering it on without having to use a switch.

i kinda worked backwards from this:
http://www.generalguitargadgets.com/projects/24-power-supplies/138-charge-pumps



it looked to me like the ground and circuit ground were separate..oops!  :icon_redface:

thanks!
  • SUPPORTER
"When the power of love overcomes the love of power the world will know peace."
Slava Ukraini!
"try whacking the bejesus outta it and see if it works again"....
~Jack Darr

pinkjimiphoton

yep, i just added a jumper to it across the two bottom rows. when all said and done, really nice toy worked out perfectly.  :icon_mrgreen:
  • SUPPORTER
"When the power of love overcomes the love of power the world will know peace."
Slava Ukraini!
"try whacking the bejesus outta it and see if it works again"....
~Jack Darr