ohmmeters definition of ohmmeters in the Free Online Encyclopedia.

ohmmeter (ōm`mē'tər), instrument used to measure the electrical resistance resistance, property of an electric conductor by which it opposes a flow of electricity and dissipates electrical energy away from the circuit, usually as heat.
..... Click the link for more information. of a conductor. It is usually included in a single package with a voltmeter voltmeter, instrument used to measure differences of electric potential , commonly called voltage, in volts or units that are multiples or fractions of volts. A voltmeter is usually combined with an ammeter and an ohmmeter in a multipurpose instrument.
..... Click the link for more information. , and often an ammeter ammeter (ăm`mē'tər), instrument used to measure the magnitude of an electric current of several amperes or more.
..... Click the link for more information. . In normal usage, the ohmmeter operates by using the voltmeter to measure a voltage drop, then converting this reading into a corresponding resistance reading through Ohm's law Ohm's law (ōm) [for G. S. Ohm ], law stating that the electric current i flowing through a given resistance r
..... Click the link for more information. . If the current is known, the voltage drop across the unknown resistance may be read to give the resistance directly. If the current is not known, or if it is not possible to measure the voltage across the unknown directly, reading the voltage drop across a known resistance in the same circuit will give the current, and once this voltage is subtracted from the total drop for the circuit, the voltage drop across the unknown, and thus its resistance, may be found.

ohmmeter [′ō‚mēd·ər]

(engineering)

An instrument for measuring electric resistance; scale may be graduated in ohms or megohms.

Ohmmeter

A portable instrument for measuring relatively low values of electrical resistance. The range of resistance measured is typically from 0.1 microhm to 1999 ohms (&OHgr;). The ohmmeter solves quickly and easily a variety of measurement problems, including measuring the resistance of cladding and tracks on printed circuit boards, electrical connectors, and switch and relay contacts, as well as determining the quality of ground-conductor continuity and bonding, cables, bus-bar joints, and welded connector tags. See Resistance measurement

Ohmmeter

A portable instrument for measuring relatively low values of electrical resistance. The range of resistance measured is typically from 0.1 microhm to 1999 ohms (&OHgr;).

The ohmmeter solves quickly and easily a variety of measurement problems, including measuring the resistance of cladding and tracks on printed circuit boards, electrical connectors, and switch and relay contacts, as well as determining the quality of ground-conductor continuity and bonding, cables, bus-bar joints, and welded connector tags. See Resistance measurement

ohmmeter (redirected from ohmmeters)

ohmmeter
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