get into tight places,measure high-magnitude currents,monitor currents at a remote location,open a circuit
To verify positive and negative wires with a multimeter, set the multimeter to the DC voltage setting. Connect the black probe to the negative terminal (common), and the red probe to the wire you want to test. If the multimeter displays a positive voltage, the wire is positive; if it shows a negative voltage, the wire is negative. If the reading is zero or close to it, the wire may not be energized.
Very unlikely unless you create a short of some type with the probe.
The same as the function of analog multimeter, but with greater precision and accuracy.measure voltage (both DC and AC)measure current (both DC and AC)measure resistanceSome digital multimeters can also do other things:measure capacitancemeasure inductancemeasure frequencymeasure temperature remotely (usually using a thermocouple probe)measure current without breaking the circuit (using a clip on magnetic probe)test semiconductor devices (diodes, junction transistors, field effect transistors, etc.)AF and/or RF signal generatoretc.
To measure the current in a DC circuit an ammeter may be used. This ammeter may consist of a sensitive meter with a shunt in parallel with it to divert part of the current. In case even more current is expected than the full scale reading of the meter an additional shunt may be connected in parallel with that arrangement.
IGBT JUNCTION TEST PROCEDURE 1. Short out G1 to E1 and G2 to E2. With a multimeter set to check diodes, check across the C1- C2E1 junction. With the (+) probe on C1 and the (-) probe on C2E1, you should see an open circuit. Switch the probes. You should see a diode drop on the meter. 2. Check across the C2E1-E2 junction. With the (+) probe on C2E1 and the (-) probe on E2, you should see an open circuit. Switch the probes. You should see a diode drop on the meter. 3. With a 9 volt* battery, connect the (+) terminal to G1 and the (-) terminal to E1. Using your meter (set to check diodes), should see a diode drop across the C1-C2E1 junction in both directions now. Connect the (+) terminal to G2 and the (-) terminal to E2. You should see a diode drop across the C2E1-E2 junction in both directions here as well. 4. If the IGBT passed all of the above tests, the IGBT is good. * You may be able to use a second multimeter as a voltage source by setting it to check resistance at its lowest available resistance scale. The (+) probe is the positive side. However, not all meters provide enough DC voltage for this, and may even give you false readings. A known DC voltage from 8 to 15 volts is recommended instead.
To test a plug with a multimeter, set the multimeter to the AC voltage setting. Insert the black probe into the smaller slot of the plug and the red probe into the larger slot. The multimeter should display a voltage reading if the plug is working properly.
To test power with a multimeter, set the multimeter to the voltage setting, connect the black probe to the ground and the red probe to the power source, and read the voltage displayed on the multimeter screen.
To test for power with a multimeter, set the multimeter to the voltage setting, connect the black probe to the ground and the red probe to the power source. The multimeter will display the voltage reading, indicating if there is power present.
To check for power in a circuit using a multimeter, set the multimeter to the voltage setting, connect the black probe to the ground and the red probe to the positive terminal of the circuit, and read the voltage displayed on the multimeter. This will show if there is power flowing through the circuit.
To check for power in a circuit using a multimeter, set the multimeter to the voltage setting, connect the black probe to the ground and the red probe to the live wire, and read the voltage displayed on the multimeter. Make sure the circuit is turned on and be cautious of electrical hazards.
To check volts on a multimeter, set the dial to the voltage setting, connect the red probe to the positive terminal and the black probe to the negative terminal of the circuit or component you want to measure. Read the voltage displayed on the multimeter screen.
To check voltage with a multimeter, set the dial to the voltage setting, connect the red probe to the positive terminal and the black probe to the negative terminal of the circuit or component you want to test. Read the voltage displayed on the multimeter screen.
To test voltage with a multimeter, set the dial to the voltage setting, connect the red probe to the positive terminal and the black probe to the negative terminal of the circuit or component you want to test. Read the voltage displayed on the multimeter screen.
To test an outlet with a multimeter, set the multimeter to measure AC voltage. Insert one probe into the hot slot and the other probe into the neutral slot of the outlet. A properly functioning outlet should read around 120 volts. If the reading is significantly lower or higher, the outlet may have a problem.
To test a light bulb with a multimeter, set the multimeter to the resistance or continuity setting. Touch one probe to the base of the bulb and the other probe to the metal threads at the bottom. If the multimeter shows a low resistance or beeps, the bulb is working. If there is no reading, the bulb is likely burnt out.
To test if a coax cable is live using a multimeter, set the multimeter to the continuity or resistance mode. Touch one probe to the center conductor of the coax cable and the other probe to the outer shield. If the multimeter shows a reading, the coax cable is live.
To test a light socket with a multimeter, set the multimeter to the voltage setting. Insert one probe into the hot wire slot and the other probe into the neutral wire slot. If the multimeter reads a voltage, the socket is working. If there is no voltage, the socket may be faulty and further inspection is needed.