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  • Digital Multimeter for resistance | Information by Electrical . . .
    The ohmmeter reading are actual readings Take my 20K reading of 04 Larry says "For example, if you get a reading of 3 87 with the scale set to 20K, then the resistance is 3 87K ohms So that means my resistance would be 04 ohms, but my reading at the 200 ohm scale was 44 9 ohms
  • Question about the difference between an ohm-meter and a megger
    Quick question with a long story for background The question is, shouldn't a megger with it's higher voltage always read a lower resistance across insulation than a standard ohm meter due to the increased current leakage? The background, we had a 480V submersible pump trip it's breaker
  • Testing three phase motors - Mike Holts Forum
    A two-wire ohmmeter won't be accurate enough to detect shorted turns, but a four-wire ohmmeter might Click to expand If you are going behind a two wire ohmmeter, an impedance meter that applies an AC test voltage will be even better at finding a shorter turn
  • Infinity readings | Information by Electrical Professionals for . . .
    Along with some less common methods, an ohmmeter can apply a fixed voltage, and measure the current The display must read the inverse of the current, making for an odd looking scale on an analog meter Or it can try to force a fixed current (varying with range) and measure the voltage across it
  • Understanding Transistors: Functions, Testing, and . . . - bartleby
    If the ohmmeter shows conduction, the assumption is correct, and the positive ohmmeter lead is connected to the collector of the transistor If the ohmmeter does not show continuity, reverse the leads and assume the other transistor pin to be the collector 9 A PNP transistor can be tested in the same manner
  • How far will a Fluke Ohm meter read? | Information by Electrical . . .
    Try a short on the cable with the ohmmeter for fun to kill time while I evaluate a course of action for the problem, and to confirm the results of the megger reading That's the way I am thinking Edit to add - A simple ohmmeter and voltage test should give us a yes or no answer, but the megger speaks volumes about the maybe's
  • Figuring wire length with a ohmmeter? | Information by Electrical . . .
    An ordinary ohmmeter won't do it From the ITT "Radio Engineers Handbook" the resistance of #3 Annealed copper wire at 20 C (68 F) is about 0 197 ohms per 1000n ft Thus, your resistance for 600 ft would be about 0 118 ohms To measure this you need a 4 terminal ohmmeter This you can make by connecting a known DC current of about 10 A thru the
  • Testing Blown Fuse | Information by Electrical Professionals for . . .
    D may be valid if the fuse is removed With the fuse installed, power and a load present, this won't work First, it would probably destroy the ohmmeter or something in it Second if no power was applied there is likely a low resistance DC path thru the load and source (transformer secondary of the source, neutral wiring, and the load
  • A series ohmmeter is made up of the following components: supply . . .
    A series ohmmeter is made up of the following components: supply voltage EB = 3 V, series resistor R, = 30 kO, meter shunt resistor R2 = 50 0, meter FSD= 5() PA, and meter resistance Rm=50 Q Determine the resistance measured at 0, 0 25, 0 5, and 0 75 of full-scale deflection
  • Answered: 6. A simple ohmmeter can be constructed from an . . . - bartleby
    A simple ohmmeter can be constructed from an ammeter as shown in Figure P5 6 In this design the measured resistance is given by the equation R = 10 1 1 kn If this ohmmeter is used to measure the forward resistance of a signal diode, the measurement will typically be about 100 N when R, is really closer to 1 N Explain with a current versus





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