avometer वाक्य
उदाहरण वाक्य
मोबाइल
- Universal Avometer Model 40 1939 to c . 1986.
- Advertisements of the late 1930s compared the utility of the Avometer to the slide rule.
- The Avometer design incorporates an electrical interlock which prevents AC & DC ranges being selected simultaneously.
- Macadie invented the first instrument, which could measure Amperes, Volts and Ohms, so the multifunctional meter was called an Avometer.
- Macadie invented an instrument which could measure amperes ( amps ), volts and ohms, so the multifunctional meter was then named Avometer.
- The Automatic Coil Winder and Electrical Equipment Company was set up to manufacture the Avometer and a coil winding machine also designed and patented by MacAdie.
- Many commercial and military service manuals specified that values for measurements of current or voltage had been made with a Model 7 or Model 8 Avometer.
- The first Avometer was made by the Automatic Coil Winder and Electrical Equipment Co . in 1923, and measured direct voltage, direct current and resistance.
- "' Avometer "'is a British trademark for a line of multimeters and electrical measuring instruments; the brand is now owned by the Megger Group Limited.
- A " Universal " version having additional alternating current and alternating voltage ranges was offered from 1933 and in 1936 the dual sensitivity Avometer Model 7 offered 500 / 100 ohms per volt.
- After copper oxide instrument rectifiers became available in the late 1920s, a 20-range " Universal " version of the Avometer was introduced in 1931 having both direct and alternating voltage current ranges.
- 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.
- However, the Avometer HR had additional 2500V ( AC ) and ( DC ) ranges which used the corresponding 1000V ranges, and were connected through two additional terminals at the top corners of the front panel.
- The last meter to leave the factory was an Avometer Eight Mk 7 ( Serial Number 6110-610 / 081208 / 5166 ) which was presented in February 2010 to the winner of a competition run by the Megger company.
- A development of the 36-range Universal Avometer incorporating automatic cut-out and internal construction similar to the Model 7 ( Basic ranges to 12A and 1200V, the former extendable with accessory current shunts ) . 167 ohms / volt.
- Universal AVOmeter 50-range Later known as Model 7 ( 1936 to c . 1986 ) : A " High Sensitivity " multimeter for radio servicing . ( Basic ranges to 10A and 1000V, the former extendable with accessory current shunts.
- Unlike many similar multimeter designs, all Universal Avometers, with the exception of the short-lived " High Resistance ( HR ) Avometer " ( c . 1948-1951 ), could measure up to either 10A or 12A ( AC ) depending on the model.
- The original Avometer was designed to measure direct current ( 3 ranges, 0.12, 1.2 & 12A ), direct voltage ( 3 ranges, 12, 120 & 600V ) and resistance ( single range, 0-10, 000 ohms, 225 ohms mid-scale ).
- The first Avometer had a sensitivity of 60 ohms per volt, three direct current ranges ( 12 mA, 1.2 A, and 12 A ), three direct voltage ranges ( 12, 120, and 600 V or optionally 1200 V ), and a 10, 000 ohm resistance range.
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