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| Why do I need more than 1 multimeter? |
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| wintech:
Why do I need more than 1 multimeter? |
| wintech:
oh |
| rstofer:
It's not unusual to want to measure more than one voltage or perhaps a voltage and a current all simultaneously Take the average LED - it has a very specific characteristic curve of voltage versus current. You might want to rig up an experiment to measure these values and plot a graph like the one in the datasheet. I have 2 bench model DMMs plus 3 handhelds layig on my bench plus some more on the shelves in the closet. I think WANT got ahead of NEED but that's not a problem. Three meters is a realistic number. Transistor base voltage, base current and collector current. Maybe another for emitter voltage if there is a degeneration resistor. |
| rrinker:
On a practical basis, maybe you want to measure both the input voltage and the output voltage of a circuit? Hard to do with a single meter. But once you get a second one - you'll want a third. And a fourth... and by then you will have heard of some of the classic vintage handhelds and bench meters, and you'll want some of those, and next thing you know, you will be posting in the TEA thread under the Test Equipment section. And of course, multimeters are just a gateway drug - next you'll be collecting oscilloscopes, signal generators, and all sorts of gear. Heaven forbid you discover nixie tube gear... |
| schmitt trigger:
Multiple parameter monitoring. A perfect example: Input line regulation on a voltage regulator. Or load current regulation also on a VR. |
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