On Fri, 2007-07-27 at 21:23 -0700, Juan Rivera wrote:
I have a few thoughts... The CAN-Do switching step-down converter is only supplying 11 milliamps. If we take a slight efficiency hit we could just go to a simple linear regulator and completely eliminate the radiated and conducted EMI emission problem from CAN-do. That eases the EMI filtering and shielding requirements for every single payload. That seems like a good trade-off to me.
Hrm. What makes you say "a slight efficiency hit"?
Doing this on one or two modules that are particularly susceptible to noise *may* make sense (and I'm certainly open to considering this as an alternative), but we're already on our second power supply design on the CAN-Do! because the original switcher, which was more efficient than a linear regulator, was deemed too inefficient to fly on P3E by our AMSAT-DL friends.
Bdale