Quote Originally Posted by Kobalt View Post
Yea...I wish I could solder cause this would be so much easier! One day I'll actually get off my ass and practice on some old boards.

Why is everyone getting different resistance values though? 28.5k ohms, 33k ohms, 105k ohms, 77k ohms...?.


1.343v idle 82.7k ohms
1.283v load 82.7k ohms
.06vdroop

1.345v idle 77.6k ohms
1.285v load 77.6k ohms
.06vdroop

.....

1.348v idle 12.4k
1.327v load 12.4k
.021vdroop

1.357v idle 9.75k
1.338v load 9.75k
.019vdroop
It would be interesting for an electrical engineer to analyse this circuit to let us know what its actually doing. Varying the pencil resistance by less than 10% makes no sense. Its ohms law, not voodoo. It behaves is regulated and predictable ways. Eg; 77.6 verses 77.2 would make negligible difference.

Kobalt what you have done looks good. It seems that vdroop improves as resistance decreases. If we took it just on these figures, you'd expect that dropping the resistance to 0 would give use no droop. However, what if this resistor is part of a feedback circuit or part of some other aspect of power regulation? Without knowing its full function, something else could be dangerously affected.