Turn Your Power Supply into an Ohmmeter - It's Free!
Watson A.Name - 'Watt Sun' wrote in
:
I got tired of switching the leads of my DMM. Suddenly if dawned on
me that I can just set the power supply to 10.0V for exaample, and
read the current, and then divide the voltage by the current to find
the resistance. Like I put a resistance on the PS, it reads 10.0V and
the current is .018A, so 10 / .018 gives 555.6 ohms. Must be a 560
ohm resistor.
I turned my PS into an ohmmeter - FREE!
Hee-hee - Work smarter, not harder!
Of course, make sure the current stays low so the resistance doesn't
overheat. For low resistances use a volt or less.
Also, you must now consider the combined accuracy, of two meters, instead
of just one.
Yes it works, but, so do pliers on a hex-nut. Something about the
right tool for the job.
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