Single universal measurement device that can be used to measure voltage [V] and current [A] in both AC and DC, as well as resistance [Ω]. Often many other ranges are available like frequency [Hz], duty cycle [%], capacity [F], ... Most are hand held, some more expensive ones come as a bench model.
8
votes
2answers
1k views
How to calibrate multimeters?
Without buying an expensive calibration tool, how can I accurately calibrate my multimeters?
6
votes
1answer
650 views
Why can't a multimeter measure its own current and voltage?
Well I finally obtained another multimeter, so now I have a Mastech MS8226T and a Ben Electronic M92A. I decided to measure at which voltages would the low battery warning appear and how much current ...
7
votes
8answers
2k views
Is it worth really buying a Fluke for hobbyist use?
Well, the question is the title: Is it worth really buying a Fluke for hobbyist use?
I have a cheap meter at the moment. Is it worth spending a 3 figure sum on a nice, shiny, new Fluke? I honestly ...
2
votes
4answers
2k views
Wrong multimeter readings measuring 12V lead acid battery
I just got my first multimeter and when I measured a 12V 1.2ah lead-acid battery I get AC 28.8V and DC 13.4V. Is this normal?
In addition I tested an AA 1.5V battery and I got 2.9V (AC setting 200) ...
4
votes
1answer
734 views
How does autoranging work in a multimeter? What is the circuit?
I was curious how this is done. It seems you would have to vary the voltage and current to measure resistance from 1ohm to 10Mohm.
2
votes
4answers
933 views
different current readings with a multimeter between the 200 mA and the 10 A slots
I have a cheap multimeter, which gives me different readings between the two inputs. I would like to set 100 mA using a potentiometer in a circuit, which runs from two AA batteries. If I measure the ...
1
vote
1answer
170 views
How do I choose the right replacement fuse for my multimeter?
I have a BK Precision 2709B Multimeter. I managed to blow the uA fuse (500mA/500V fast blow ceramic) on it. Is it an ok to replace this fuse with a 500mA/1kV fast blow ceramic fuse? What impact would ...
1
vote
1answer
234 views
What' the low voltage displayed by a voltmeter when only one of its probes is connected?
Recently I was toying with a digital multimeter and observed the following. The multimeter was set to measuring AC voltage with the upper limit of 750 volts. It has two probes which I will call "red" ...
1
vote
4answers
335 views
Failed multimeter
I have a cheap handheld multimeter that has stopped working. It basically behaves as if the leads weren't connected: the Vdc readout stays at zero, and the ...
0
votes
2answers
431 views
How do I fix my multimeter, which doesn't seem able to measure resistance?
I've got a Caltek CM1200 multimeter, which I bought ages ago.
http://www.caltek.com.hk/cm1200.htm
It can measure voltage perfectly. I'm pretty sure the battery works, as it displays 0 when you go ...
