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What type of Multimeter is safe to use on computers?

What type of Multimeter is safe to use on computers?

In "Upgrading and Repairing PC's - 18th edition" by Scott Mueller on pg. 1278 he discusses multimeters. "You should only use a DMM (digital multimeter) instead of the older needle-type multimeters because the older meters work by injecting 9V into the circuit when measuring resistance, which damages most computer circuits.

Asked by: Guest | Views: 60
Total answers/comments: 3
Guest [Entry]

"I think my fairly generic DMM has a resistance measuring voltage of less than a quarter of a volt and a continuity check voltage of less than one volt. The continuity range also tests diodes, so it has a higher voltage to overcome the voltage drop of a diode. When measuring voltage, it has a resistance of over 30 MOhms.

I think you will be fine with any slightly modern DMM. So long as you are careful where you stick it. :)"
Guest [Entry]

While true, this may be somewhat the wrong question. I almost never do resistance checks with my meter. I do mostly voltage checks, and for those I believe you want a meter with a very high internal resistance (going from memory here, since my reference material is all at home). Anyways, something new and expensive will be best. :-)
Guest [Entry]

"I think it matters far more that you know how to use a multimeter and what will happen when you use it, than what brand/model of multi-meter you use.

Even with the most expensive multi-meter you can cause damage to the equipment or the meter if you connect it the wrong way or with the wrong settings."