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Multimeter: General purpose instrument measures voltage, current and resistance (and sometimes other quantities as well) Network analyzer: Measures network parameters Ohmmeter: Measures the resistance of a component Oscilloscope: Displays waveform of a signal, allows measurement of frequency, timing, peak excursion, offset, ... Psophometer
Analog multimeter Digital multimeter. A multimeter (also known as a volt-ohm-milliammeter, volt-ohmmeter or VOM) [1] is a measuring instrument that can measure multiple electrical properties. [2] [3] A typical multimeter can measure voltage, resistance, and current, [4] in which case can be used as a voltmeter, ohmmeter, and ammeter.
The multimeter is often called simply an AVO, because the company logo carries the first letters of 'amps', 'volts' and 'ohms'. The design concept is due to the Post Office engineer Donald Macadie, who at the time of the introduction of the original AVOmeter in 1923 was a senior officer in the Post Office Factories Department in London.
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A multimeter in a resistance range can detect a short-circuited capacitor (very low resistance) or one with very high leakage (high resistance, but lower than it should be; an ideal capacitor has infinite DC resistance). A crude idea of the capacitance can be derived with an analog multimeter in a high resistance range by observing the needle ...
As of September 2014, eBay has acquired over 40 companies, the most expensive of which was the purchase of Skype, a Voice over Internet Protocol company, for US$2.6 billion in cash plus up to an additional US$1.5 billion if certain performance goals were met. [2] The majority of companies acquired by eBay are based in the United States.
Spring Branch is a district in west-northwest Harris County, Texas, United States, roughly bordered by Tanner Road and Hempstead Road to the north, Beltway 8 to the west, Interstate 10 to the south, and the 610 Loop to the east; it is almost entirely within the city of Houston. [4]