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A multimeter is used to measure three electrical characteristics in circuits: Voltage Current and Resistance. AC and DC voltage and current can be measured. These three are related by Ohms law: Voltage ( in volts) = Current (in amps) times Resistance (in ohms) see http://en.wikipedia.org/wiki/Ohm%27s_law
The main component in a multimeter is a micro amp meter. A hair thin wire is wound around an iron core on a pivot and with in a permanent magnetic field. When current flows through the coil it produces a magnetic force proportional to the current that causes the coil to move on the pivot against the permanent magnetic field. A pointer is attached to the coil and it move past the meter scale.
The coil has some resistance 50 Ohms. If one volt of direct current is applied the 200 Milli amps of that current would turn the coil with so much force that it would pin the needle or break the mechanism. Typical micro ammeters are limited to 50 micro amps maximum.
In a parallel circuit current divides inversely proportionally to the resistance. If a wire of 0.5 ohms is placed in parallel with the meter coil then 99% of the current will go through the wire (shunt) and 1% will go through the coil. The meter range would become 5000 micro amps or 5 Milli amps. If the shunt was made to .05 ohms the range would be 50 milli amps.
Instead of a shunt a resistor of 4,950 ohms is wired in series with the coil. Now the total resistance is 5,000 ohms if 100 volts is placed across the meter and shunt the meter will only show 50 micro amps.
What else can I help you with?
How do you work the Etek 10709 multimeter?
Turn it on and press start.
What tool is used to check voltage?
by using a multimeter we can find line voltage.
Why does the multimeter show the RMS value of sine wave but not for the triangular wave?
Because your multimeter is not an adequate device for this kind of measurement. Use the correct multimeter to display the triangular wave value.
Can you calibrate voltmeter on multimeter or multimeter on voltmeter?
how which is right and which is wrong. You need a voltage standard with that you can calibrate both to the standard
What are the black and red things hanging off a multimeter?
They are called test leads, you would use them to connect the multimeter to the points that are to be tested.
How do you work the Etek 10709 multimeter?
Turn it on and press start.
How can I measure frequency with a multimeter?
To measure frequency with a multimeter, set the multimeter to the frequency measurement mode. Connect the multimeter's probes to the circuit or signal you want to measure. The multimeter will display the frequency in hertz (Hz) on its screen.
How can I measure hertz using a multimeter?
To measure hertz using a multimeter, set the multimeter to the frequency measurement mode. Connect the multimeter's probes to the circuit or device you want to measure. The multimeter will display the frequency in hertz.
How to measure frequency with a multimeter?
To measure frequency with a multimeter, set the multimeter to the frequency measurement mode. Connect the multimeter's probes to the circuit or signal you want to measure. The multimeter will display the frequency in hertz (Hz) on its screen.
How to test frequency with a multimeter?
To test frequency with a multimeter, set the multimeter to the frequency measurement mode. Connect the multimeter leads to the circuit or signal you want to measure. The multimeter will display the frequency in hertz (Hz) on the screen.
How can I measure hertz with a multimeter?
To measure hertz with a multimeter, set the multimeter to the frequency measurement mode and connect the probes to the source of the signal. The multimeter will display the frequency in hertz.
How to measure the resistance of a wire with a multimeter?
To measure the resistance of a wire with a multimeter, first turn on the multimeter and set it to the resistance measurement mode. Then, connect the probes of the multimeter to each end of the wire. The multimeter will display the resistance value in ohms.
How can you test a battery?
You can test a battery by using multimeter. Set the multimeter to the DC voltmeter setting and then place the leads of the multimeter across the leads of the battery. the multimeter will have a readout of the voltage.
What is the procedure for measuring frequency in hertz using a multimeter?
To measure frequency in hertz using a multimeter, set the multimeter to the frequency measurement mode. Connect the multimeter's probes to the circuit or signal you want to measure. The multimeter will display the frequency in hertz on its screen.
What is the purpose of an automotive multimeter?
An automotive multimeter, like any multimeter, can be used to test the voltage or current in some kind of circuit. As it is an automotive multimeter it is aimed more towards the used in a car.
Why does your headlight not work on a 2003 Honda foreman?
my headlights work. but if yours don't, you should see if the socket is getting power with a multimeter. if you don't have a multimeter, just try replacing the bulb. if that doesn't fix it, you should check fuses, relays, and switches. Or just take the car to a mechanic.
How to test a switch with a multimeter?
To test a switch with a multimeter, set the multimeter to the resistance or continuity setting. Disconnect the switch from the circuit and touch the multimeter probes to the switch terminals. If the multimeter shows a reading of zero or close to zero, the switch is closed and working properly. If the multimeter shows an infinite reading, the switch is open and needs to be replaced.
