A "'digital voltmeter "'( DVM ) measures an unknown input voltage by converting the voltage to a digital value and then displays the voltage in numeric form.
12.
This voltage is then measured by a digital voltmeter, through use of an analog to digital converter ( ADC ); the digital display is calibrated to display the current through the shunt.
13.
It is optimized in instrument control and automation with test and measurement devices such as data acquisition instruments like digital voltmeters and oscilloscopes, and source devices like signal generators and programmable power supplies.
14.
A modern digital voltmeter such as the Fluke 87V has a 10 megohm input impedance, so is if is measuring say a 1.5 volt emf, it would draw 0.15 microamperes.
15.
The sale of Fluke's line of large bench and rack mounted equipment such as digital voltmeters and signal scanners weakened due to the increased use of PC controlled measurement and sensing modules embedded with the computer.
16.
To increase accuracy further, any residual thermoelectric voltages generated by different wire types or screwed connections are eliminated by reversal of the direction of the 1 mA current and the leads to the DVM ( digital voltmeter ).
17.
Roberts had developed several test equipment products such as a Waveform Generator and a Digital Voltmeter so he attempted to appeal to kit builders again by featuring the test equipment and digital clocks in the advertisements, instead of calculators.
18.
At introduction, HP engineers had interfaces for more than 20 instruments including " counters, nuclear scalers, electronic thermometers, digital voltmeters, ac / ohms converters, data amplifiers, and input scanners . " The HP 2116A's introduction began the age of modern automated test systems.
19.
In conclusion, a science fair project would do well to obtain adequate measuring instruments ( a digital voltmeter is on the order of $ 30 at a hardware store ) and to do some experimentation by trying metals at different places in the talk ) 19 : 55, 22 February 2008 ( UTC)
