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.
(http://i605.photobucket.com/albums/tt137/pinkjimiphoton/LT1054CPCHARGEPUMPLAYOUT.jpg)
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?
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
(http://www.generalguitargadgets.com/pics/pcbs/1m_cp_bp_pcb.jpg)
it looked to me like the ground and circuit ground were separate..oops! :icon_redface:
thanks!
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: