methods of using the muiltimeter to test various types of methods to test voltage,resistance, fuses, resistors, wires,switches
Hello today i'll be posting about methods in which a mulitimeter can be used to test: voltage,resistance,fuses,resistors,wires and switches.
How ever before i inform you about that i would like to give you a little briefing on what a mulitimeter really is. well first of all a mulitimeter is a instrument designed to measure electric current ,voltage and mostly resistance and usually over several ranges. also this helpful device comes with three simple features. the display, selection nob and of course the ports. so here are some pointers to always remember about these features.
- The display usually
has four digits and the ability to display a negative sign. A few multimeters
have illuminated displays for better viewing in low light situations.
- The selection
knob allows the user to set the multimeter to read different things
such as milliamps (mA) of current, voltage (V)
and resistance (Ω).
- Two probes are plugged
into two of the ports on the front of the unit. COM stands
for common and is almost always connected to Ground or of a circuit.
The COM probe is conventionally black but there is no
difference between the red probe and black probe other than color. 10A is
the special port used when measuring large currents (greater than 200mA). mAVΩ is
the port that the red probe is conventionally plugged in to. This port allows
the measurement of current (up to 200 mA), voltage (V), and resistance (Ω).
To start, let’s try measure voltage on a battery: Plug the black probe into COM and
the red probe into mAVΩ. Set the multimeter to “2V” in the DC
(direct current) range. Almost all portable electronics use direct current),
not alternating
current. Connect the black probe to the battery’s ground or ‘-’ and
the red probe to power or ‘+’. Squeeze the probes with a little pressure
against the positive and negative terminals of the AA battery. If you’ve got a
fresh battery, you should see around the voltage on the display. If you’re measuring DC
voltage you want to set
the knob where the V has a straight line. AC voltage (like what comes out of
the wall) can be dangerous, so we rarely need to use the AC voltage setting . use
the V with a straight line to measure DC Voltage use
the V with a wavy line to measure AC Voltage if you
switch the red and black probes the reading on the multimeter is simply
negative. Nothing happens.
Hello today i'll be posting about methods in which a mulitimeter can be used to test: voltage,resistance,fuses,resistors,wires and switches.
How ever before i inform you about that i would like to give you a little briefing on what a mulitimeter really is. well first of all a mulitimeter is a instrument designed to measure electric current ,voltage and mostly resistance and usually over several ranges. also this helpful device comes with three simple features. the display, selection nob and of course the ports. so here are some pointers to always remember about these features.
- The display usually
has four digits and the ability to display a negative sign. A few multimeters
have illuminated displays for better viewing in low light situations.
- The selection
knob allows the user to set the multimeter to read different things
such as milliamps (mA) of current, voltage (V)
and resistance (Ω).
- Two probes are plugged
into two of the ports on the front of the unit. COM stands
for common and is almost always connected to Ground or of a circuit.
The COM probe is conventionally black but there is no
difference between the red probe and black probe other than color. 10A is
the special port used when measuring large currents (greater than 200mA). mAVΩ is
the port that the red probe is conventionally plugged in to. This port allows
the measurement of current (up to 200 mA), voltage (V), and resistance (Ω).
To start, let’s try measure voltage on a battery: Plug the black probe into COM and
the red probe into mAVΩ. Set the multimeter to “2V” in the DC
(direct current) range. Almost all portable electronics use direct current),
not alternating
current. Connect the black probe to the battery’s ground or ‘-’ and
the red probe to power or ‘+’. Squeeze the probes with a little pressure
against the positive and negative terminals of the AA battery. If you’ve got a
fresh battery, you should see around the voltage on the display. If you’re measuring DC
voltage you want to set
the knob where the V has a straight line. AC voltage (like what comes out of
the wall) can be dangerous, so we rarely need to use the AC voltage setting . use
the V with a straight line to measure DC Voltage use
the V with a wavy line to measure AC Voltage if you
switch the red and black probes the reading on the multimeter is simply
negative. Nothing happens.
Reference: Nate Seidle 2003, how to use a muiltimeter,Date retrieved: November 13,2017,Link Address :https://learn.sparkfun.com/tutorials/how-to-use-a-multimeter
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