Wednesday, June 04, 2008 11:08:43 PM (Central Daylight Time, UTC-05:00) ( )
Oh yea!!! working sweet.
A few misadventures while building it... was in too much of a hurry...
I inserted a diode backwards in the 48V section, which effectively
shorted the thing... the IC chip and board got a little warm... but no
Desoldered it, and put in a new one, (made sure to install it properly) and now the 48V section works perfectly!
Found a little error in my header jumper... my original intention was
using a jumper to activate or deactivate the 48V section (in case the
user doesn't need it, will also conserve battery power)... but I
miswired it so now the 48V section is always available and it's the
split psu section that can be disabled or enabled... dumb backwards!
I'll fix this on the next PCB revision.
Connected the 12VDC wall wart... measured 27Volts on the 48V section,
adjust the onboard trimmer for 48.05 Volts... and now we have a working
+/- voltage rails plus 48Volts output.
But yea, everything is working great. See the little LED lit up? It's a sign that the future looks bright.
I just need to continue to populate the board and complete the testing.
Finally finished building the first SC-1 Solo prototype using the latest PCB design, and latest DC-DC Converter PSU design.
I haven't passed audio through it yet, but I did some power up testing, measuring voltages, etc... everything looks perfect!
I need to get some sleep. Will do audio testing later.