How do you scope a current source?

Lahlum Ross ross_lahlum at msmail.wes.mot.com
Fri Apr 5 22:29:34 CEST 1996


Connect one side of the resistor to ground, then current will flow through
it, and you can probe the DAC-resistor node to read voltage.

Ross Lahlum

>Ob DIY:  How do you check out a current source on a scope?  I have a DAC 
>that I'm trying to figure out if it's good or bad, and I would think that 
>putting a resistor between the probe and DAC output would give me 
>something to measure.  I'm not seeing anything.  Am I missing something 
>obvious, or is the DAC bad?
>
>Thanks
>JDM





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