A multimeter, also known as a digital multimeter (DMM) or multitester, is a versatile tool used for measuring and displaying important parameters in electronics and electrical circuits. These measuring instruments can measure quantities such as voltage, current, and resistance. Digital multimeters are capable of testing for amps, ohms, voltage, and resistance.
When measuring resistance in ohms, it’s important to note that a multimeter cannot measure continuity because resistance and continuity are opposites. To measure resistance, touch one lead to one end of the component and the other lead to the opposite end.
Multimeters are either analog or digital, with each type having its unique display method. Analog multimeters show results using a needle moving across a scale, while digital multimeters have a numeric display. Despite the needle’s movement over time due to electrical fluctuations, analog multimeters like the Gardner Bender GMT-312 Analog Multimeter, which offers 5 functions and 12 range options, remain useful for various measurements.
Analog Multimeter Gardner Bender GMT-312 (ad)
Advanced measurements such as frequency, impedance, and waveform analysis are typically performed using digital multimeters. While analog multimeters use a needle scale, digital multimeters provide a more precise and numeric display of readings. The first versions of multimeters were analog with a needle indicator, but modern digital versions offer more accurate readings.
Digital multimeters are ideal for testing equipment with a linear load, drawing current in a smooth sine wave. These devices are average sensing, ensuring accurate AC measurements under these conditions.
