How to use multimeter in hindi | Multimeter tutorial | multimeter kaise use kerain Part 1 of 4
About this video
how to use multimeter
A multimeter is mainly used to measure the three basic electrical characteristics of voltage, current, and resistance. It can also be used to test continuity between two points in an electrical circuit.
This post mainly introduces the basic information of multimeters, applications, and types of multimeters are in. Let’s see all of these.
The multimeter has multi functionalities like, acts like ammeter, voltmeter, and ohmmeter. It is a handheld device with positive and negative indicator needles over a numeric LCD digital display. Multimeters can be used for testing batteries, household wiring, electric motors, and power supplies.
The essential parts of the multimeter mainly include a display, power source, probes, and controls.
The function and operation of a multimeter are similar for both analog and digital types. This instrument includes two leads or probes namely red and black & three ports. The black color lead is used to plug into the common port, whereas the red color leads plug into other ports based on the requirement.
Once the leads are plugged in, the knob can be switched ON in the center of the instrument so that the appropriate function can be done for the specific component test. For instance, once the knob is situated to 20V DC, then the multimeter will notice DC voltage up to 20V. To calculate low voltages, then set the knob in the multimeter to the 2V/200mV range.
To obtain a reading from the meter, you need to touch the end of each probe to the end of the terminals of components. Types of multimeter devices are very safe to utilize on devices and circuits to provide the current or voltage that does not go above the highest rating of the meter.
While measuring, we must be very cautious so don’t touch the bar ends of the metal in the tester when activated otherwise you will get an electrical shock.
Functions of Multimeters
These instruments are capable of different readings based on the model. So basic types of multimeter are mainly used to measure amperage, resistance, voltage, checks continuity and a complete circuit can be tested like the following.
Resistance in Ohms
Capacity in Farads
The temperature in Fahrenheit/ Celsius
AC Voltage & Amperage
Inductance Henrys
DC Voltage & Amperage
Frequency in Hz
Conductance in Siemens
Decibels
Duty Cycle
To some types of multimeters, special sensors or accessories can be attached for extra readings like acidity, light level, alkalinity, wind speed & relative humidity.
Types of Multimeter
There are different types of multimeters like Analog, Digital, and Fluke multimeters.
Analog Multimeter
The Analog Multimeter or VOM (Volt-Ohm-Milliammeter) is constructed using a moving coil meter and a pointer to indicate the reading on the scale. The moving coil meter consists of a coil wound around a drum placed between two permanent magnets.
As current passes through the coil, the magnetic field is induced in the coil which reacts with the magnetic field of the permanent magnets and the resultant force causes the pointer attached to the drum to deflect on the scale, indicating the current reading. It also consists of springs attached to the drum which provides an opposing force to the motion of the drum to control the deflection of the pointer.