Set the multimeter to “2V” in the DC (direct current) range. Almost all portable electronics use direct current), not alternating current. To begin , make sure no current is running through the circuit or component you want to test. Switch it off, unplug it from the wall, and.
It indicates that the connected resistance is too high to measure on the selected scale.
If there is no OFF position, switch the multimeter to the highest ac voltage position .
Adjust the ohms reading after .
This concern is not unfounde and it is always best to proceed cautiously when using meters. Carelessness more than any other factor is what causes experienced technicians to have electrical accidents. Some multimeters are auto-ranging, whereas others require you to manually select the range for your measurement.
Be sure to switch it off after use - if you leave it switched on in your tool box you may well find the battery is dead the next time you need it. First insert the black probe into the. Otherwise, damage to the meter . VOLTMETER SAFETY PRECAUTIONS Just as with ammeters, voltmeters require safety precautions to prevent injury to personnel and damage to the voltmeter or equipment. Be certain the multimeter is switched to ac before attempting to measure ac circuits.
Always connect voltmeters in parallel. Bryant about using standard multimeters written for beginners with much. You should always use the lowest possible range.
Some also allow you to check the dwell angle and engine speed. Check battery voltages by connecting the meter to the two terminal posts. Test resistance in the HT circuit by probing both ends of . If you are not sure what the voltage should be, then start on the highest range. To avoid electric shock when measuring voltage or current, always hold only the plastic insulation on the probes.
The COM probe is conventionally black but there is. Do not apply voltage to the Test. Leads when the Multimeter is in the. Damage can occur to the multimeter.
Never attempt to use the meter at a. Therefore, I would not measure current from your wall charger on any range other than until you know for certain that the load is . Any time you change scales when measuring resistance, you must always set the zero again.
No comments:
Post a Comment
Note: only a member of this blog may post a comment.