| Gallery, Projects and General > How do I?? |
| Please explain my meter to me. |
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| ieezitin:
Could someone please explain all the functions of my multy meter and what it can and or cannot do. and how to use it. Below is the picture of my meter so you can reference from there. Many Thanks Anthony. |
| tinkerer:
You can download the manual from http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man. That will get you started. Then take a course in AC/DC theory and that will get you a little further. :lol: Just kidding, the manual should help a lot. |
| sorveltaja:
Anthony, if you start of the green coloured ohm-scale, on the left side is diode tester/ continuity tester. Rest of the green scale is to choose, what resistor values you need to measure. Next thing in the clockwise is the black scale. It is a DC voltage scale. With that, you can measure things like 1.5V or 9V batteries, that have + and - poles. When measuring, at first, always set the meter to its highest voltage value. Red scale is for an AC voltage. Similar to what is used on tv's and other home devices. Next are ACA, and DCA scales. Both measure currents. Never put the probes straight to the current source, as it might damage the multimeter. Serial resistance is most probably required for that operation. What's left is the hFE-portion. With that, you can measure transistor values, when they are inserted to that blue socket. Hope this helps :thumbup:. |
| Bernd:
Too add further to sorveltaja's fine explaination. On the Ohm scale the left most symbol is a diode. Use this to check if a diode is either open or working. You should hear a sound. If not reverse the leads. If you still don't have a sound then the diode is open (like a filiment on a blown bulb) or if it makes a sound if it's connected either way it's no good. Checking must be done with the diode out of the circuit board. On the amp scale you need to move the black lead to the black hole marked 2 A Max when checking for a current under 2 amps and all the way to the left if your current is going to be more than 2 amps, but less than 10 amps. Got more questions, just ask. Bernd |
| John Rudd:
--- Quote from: sorveltaja on January 01, 2010, 02:57:10 PM --- What's left is the hFE-portion. With that, you can measure transistor values, when they are inserted to that blue socket. --- End quote --- hFE is the current gain of a transistor...its a function of collector current/ base current... Unless you are into electronics... ( if you are you would know) Don't worry about it If you wanna know we can discuss that later.. :D |
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