[sdiy] Filter Caps in linear PSU's

[Tim Daugard]

> Don't forget... that all Jim Patchell's boards
> have an extra 500uF on the outputs... in the form
> of 5,000 .1uF ceramic decoupling caps.

Which is why I stopped putting caps at the output of the regulator. With all the bypass
caps in each of the modules, the transformer couldn't supply enough start up current. I
eliminated the cap right at the regulator to reduce startup loading (and added some
resistance in line in some non-critical modules.

(and BBD Harry's answer is a smarter power supply with a warm up circuit.)

My final responce was use a double switch box with a larger transformer. I went from about
300 mA to 1+ amp.

Tim Daugard
AG4GZ 30.4078N 86.6227W Alt: 12 feet above MSL
http://home.sprintmail.com/~daugard/synth.htm