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Necessary Things for Using Multimeter

Necessary Things for Using Multimeter

The multimeter is a familiar device to everyone who specializes in the electricity sector. The device provides effective support for electricians and electrical engineers who need to test circuits, measure parameters, and so on.

The multimeter is an electrical measuring instrument with multiple functions. The basic functions include the ammeter, voltmeter, and ohmmeter. Furthermore, this device also can measure the power line frequency, capacitance capacitors, check transistors. Due to the usefulness of the device, many people need to purchase one. However, some people still have trouble finding the best multimeter to buy and understanding how to use it most effectively. This post will help you learn how to select and use a multimeter.

    Photo Credit: Juan Rodriguez

    In fact, the multimeter is quite easy to use. Selection of the unit of measurement and scale can be performed by manipulating the buttons and switches on the device. Moreover, many modern multimeters can automatically select the scale.

    1. Functions of multimeters

    – Checking circuit connections: the machine will beep when the resistance between two probes is nearly equal to 0.

    – Measuring small voltages or amperages when a large resistor is present.

    – Measuring the inductance of the inductor and capacitance of the capacitor when checking and installing electrical circuits.

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    – Checking diodes and transistors.

    – Providing support for temperature measurement using thermocouples.

    – Measuring the average frequency when adjusting a radio circuit. The user would listen to the signal instead of seeing the signal as when using an oscillograph.

    – Saving measurement data in the device.

    2. Advantages and disadvantages of multimeter types: Analog multimeters

      Photo Credit: stratomory

      Advantages

      – Usually preferred for testing whether semiconductor components such as a diode, transistor, or MOSFET are still active or not, because this type of device is easier to use for this task.

      – Can be used to quickly check damaged components in electronic circuits.

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      – Lower price.

      Disadvantages

      – The needles or electronic circuits inside can easily break if the device is not used properly.

      – It can be difficult to read the numeric values for the voltage, current, and resistance.

      – The accuracy is not high.

      3. Advantages and disadvantages of multimeter types: Digital multimeters

        Photo Credit: en-us.fluke.com

        Advantages

        – Easy to read and follow the numerical values displayed on the screen.

        – High precision.

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        – High durability.

        – Can be equipped with more advanced functions, such as measuring frequency or capacitance.

        Disadvantages

        – Expensive.

        – Difficult to use, which could be a problem if the user wants to quickly check whether electronic components are damaged.

        4. How to use a multimeter to measure current and voltage

        Method 1: Use the scale line

        In order to measure the current using a multimeter, you measure the load consumption, but you have to note that you can only measure an electric current lower the value that the scale allows. Next, you follow the steps below:

        Step 1: Set the device on the highest scale line.

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        Step 2: Connect the rods of the device to the load, with the red rod on the positive side and the black rod on the negative side.

        The device will then provide the current values.

        Method 2: Use DC scale voltage

        It is also possible to measure the current through the load by measuring the pressure drop across the resistor in series with the load limit line; the measured voltage divided by the limit value will indicate the current value. This method gives the user the ability to measure larger currents and is also safer.

        To do this, read AC and DC voltage values. When measuring the DC voltage, you must read the value on the DCV.A index bar. If you set 250V for the scale, the highest value measurable is 250. When you are measuring the AC voltage, you must read the values on the AC.10V bar.

        Featured photo credit: mjlorton via youtube.com

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        Angella Copper

        Professor of Hanoi University of Science and Technology

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        Last Updated on September 18, 2020

        7 Simple Rules to Live by to Get in Shape in Two Weeks

        7 Simple Rules to Live by to Get in Shape in Two Weeks

        Learning how to get in shape and set goals is important if you’re looking to live a healthier lifestyle and get closer to your goal weight. While this does require changes to your daily routine, you’ll find that you are able to look and feel better in only two weeks.

        Over the years, I’ve learned a lot about what it takes to get in shape. Although anyone can cover the basics (eat right and exercise), there are some things that I could only learn through trial and error. Let’s cover some of the most important points for how to get in shape in two weeks.

        1. Exercise Daily

        It is far easier to make exercise a habit if it is a daily one. If you aren’t exercising at all, I recommend starting by exercising a half hour every day. When you only exercise a couple times per week, it is much easier to turn one day off into three days off, a week off, or a month off.

        If you are already used to exercising, switching to three or four times a week to fit your schedule may be preferable, but it is a lot harder to maintain a workout program you don’t do every day.

        Be careful to not repeat the same exercise routine each day. If you do an intense ab workout one day, try switching it up to general cardio the next. You can also squeeze in a day of light walking to break up the intensity.

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        If you’re a morning person, check out these morning exercises that will start your day off right.

        2. Duration Doesn’t Substitute for Intensity

        Once you get into the habit of regular exercise, where do you go if you still aren’t reaching your goals? Most people will solve the problem by exercising for longer periods of time, turning forty-minute workouts into two hour stretches. Not only does this drain your time, but it doesn’t work particularly well.

        One study shows that “exercising for a whole hour instead of a half does not provide any additional loss in either body weight or fat”[1].

        This is great news for both your schedule and your levels of motivation. You’ll likely find it much easier to exercise for 30 minutes a day instead of an hour. In those 30 minutes, do your best to up the intensity to your appropriate edge to get the most out of the time.

        3. Acknowledge Your Limits

        Many people get frustrated when they plateau in their weight loss or muscle gaining goals as they’re learning how to get in shape. Everyone has an equilibrium and genetic set point where their body wants to remain. This doesn’t mean that you can’t achieve your fitness goals, but don’t be too hard on yourself if you are struggling to lose weight or put on muscle.

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        Acknowledging a set point doesn’t mean giving up, but it does mean realizing the obstacles you face.

        Expect to hit a plateau in your own fitness results[2]. When you expect a plateau, you can manage around it so you can continue your progress at a more realistic rate. When expectations meet reality, you can avoid dietary crashes.

        4. Eat Healthy, Not Just Food That Looks Healthy

        Know what you eat. Don’t fuss over minutia like whether you’re getting enough Omega 3’s or tryptophan, but be aware of the big things. Look at the foods you eat regularly and figure out whether they are healthy or not. Don’t get fooled by the deceptively healthy snacks just pretending to be good for you.

        The basic nutritional advice includes:

        • Eat unprocessed foods
        • Eat more veggies
        • Use meat as a side dish, not a main course
        • Eat whole grains, not refined grains[3]

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        Eat whole grains when you want to learn how to get in shape.

          5. Watch Out for Travel

          Don’t let a four-day holiday interfere with your attempts when you’re learning how to get in shape. I don’t mean that you need to follow your diet and exercise plan without any excursion, but when you are in the first few weeks, still forming habits, be careful that a week long break doesn’t terminate your progress.

          This is also true of schedule changes that leave you suddenly busy or make it difficult to exercise. Have a backup plan so you can be consistent, at least for the first month when you are forming habits.

          If travel is on your schedule and can’t be avoided, make an exercise plan before you go[4], and make sure to pack exercise clothes and an exercise mat as motivation to keep you on track.

          6. Start Slow

          Ever start an exercise plan by running ten miles and then puking your guts out? Maybe you aren’t that extreme, but burnout is common early on when learning how to get in shape. You have a lifetime to be healthy, so don’t try to go from couch potato to athletic superstar in a week.

          If you are starting a running regime, for example, run less than you can to start. Starting strength training? Work with less weight than you could theoretically lift. Increasing intensity and pushing yourself can come later when your body becomes comfortable with regular exercise.

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          7. Be Careful When Choosing a Workout Partner

          Should you have a workout partner? That depends. Workout partners can help you stay motivated and make exercising more fun. But they can also stop you from reaching your goals.

          My suggestion would be to have a workout partner, but when you start to plateau (either in physical ability, weight loss/gain, or overall health) and you haven’t reached your goals, consider mixing things up a bit.

          If you plateau, you may need to make changes to continue improving. In this case it’s important to talk to your workout partner about the changes you want to make, and if they don’t seem motivated to continue, offer a thirty day break where you both try different activities.

          I notice that guys working out together tend to match strength after a brief adjustment phase. Even if both are trying to improve, something seems to stall improvement once they reach a certain point. I found that I was able to lift as much as 30-50% more after taking a short break from my regular workout partner.

          Final Thoughts

          Learning how to get in shape in as little as two weeks sounds daunting, but if you’re motivated and have the time and energy to devote to it, it’s certainly possible.

          Find an exercise routine that works for you, eat healthy, drink lots of water, and watch as the transformation begins.

          More Tips on Getting in Shape

          Featured photo credit: Alexander Redl via unsplash.com

          Reference

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