What are digital multimeters

Another of the common school course of physics it is known that the electric circuit is characterized by a number of parameters. Among them the voltage, also known as capacity value and the kind flowing through a conductor the current consumed by the load from the network power, the resistance value (in ohms) and some others.

To measure each of them were created by specialized equipment. For current is ammeter, voltage – voltmeters, ohmmeters for resistance, etc. However, what if there is a need to measure more than one parameter, but several? Wear all of your existing devices? In this case, on mobility and convenience. To solve this problem were created by versatile solutions: devices which functionally combines several others. For example, in the first switch position a toggle switch, you can measure the voltage in the second internal logic is activated, which allows to determine the resistance. Convenient! Such devices are known as multimeters. That is "multi" a lot of, well, "meters" - measure. The second name, which is not quite correct - testers. Modern digital multimeters can measure numerous parameters from simple resistance circuit to the ambient temperature.

Despite the large variety of these devices, they are divided into two basic classes: analog and digital multimeters. For most users more comfortable latter, although the former have several advantages, however, specific.

Analog models have been practically discontinued, as the demand for them was insignificant in comparison with the alternative version (digital multimeter DT is now incredibly popular). However, markets can still be found new such decisions, therefore, briefly to consider them. Analog devices are very easy to distinguish from the others: in case there is a switch-rattle, used to select the measurement mode, and a fairly large panel with a scale with tick labels (similar to a ruler). When connecting the test leads to the circuit in the inner coil there is a current, creates a magnetic field and their interaction makes pointing the arrow to deviate at a certain angle. It remains only to calculate the interval and find the value of the measured parameter. Digital multimeters is more preferred because it eliminated the error terms of the grading scale under the exposed ratchet limit.

Additionally, if you need some of the professional instruments and tools, you could search at Banggood, which will offer you the low prices. Such as, fluke pocket multimeter, Mastech MS2015B, etc.