ok! for the tau on a +/-15v supply, i measure:
~29mA draw on -15v
~34mA draw on +15v
hth.
--- Mark <
yahoogroups@...> wrote:
> On 5/6/08, loopcycle put forth:
> >
> >yeah i think so. im basically opening each circuit (+15v, -15v)
> >separately, at one point, and measuring the current between the
> >module and psu while its
> >powered up. ill have to find some good safe points on the pcb to attach to
> (i
> >didnt use a header for my power).
>
> Right, the point would have to be where the power goes.
>
> >question: do i have to consider polarity when i place my multimeter in the
> >circuit? how do i know which side of my DMM connects to the negative
> supply?
>
> Unless your meter can only measure current going one way, I don't
> think it matters, although every diagram I've seen has shown the red
> meter lead connected to the negative side of the circuit (ground or
> the negative supply). Which looks backwards to me. My digital meter
> will show either show a negative sign or not depending on which way I
> put the leads, or which way the current is flowing, depending on how
> you want to look at it.
>
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