> On Dec 18, 2:06 pm, Dylan Distasio <[email protected]> wrote: > Thanks for the feedback. I'm not really ready to do PCBs yet from scratch, > do you have any recommendations besides the MAX1771 if it's not well suited > for perfboard. I'll look into coils with less inductance also. >
Are intending to drive them "direct drive" (static), or multiplexed ? If static, that'll be 25V at ~120mA. Multiplexed, 50V at only ~30mA. If its static, and you're only looking at 25V, then you really don't need a switcher. Use a 12VAC wallcube, and just add a simple voltage doubler. You can make that either a +28V doubler, or a -28V doubler. For multiplexed operation, 50V@30mA isn't too taxing for either a 555 switcher, or MC34063 switcher. That's only 1.5W of output power. Even a crappy 555 supply can output 4W. Of course, a MAX1771 can do 20W, and a MC34063 close to 8W. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
