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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 March 13, 2019

        How to Get out of a Rut: 12 Useful Ways to Get Unstuck

        How to Get out of a Rut: 12 Useful Ways to Get Unstuck

        Have you gotten into a rut before? Or are you in a rut right now?

        You know you’re in a rut when you run out of ideas and inspiration. I personally see a rut as a productivity vacuum. It might very well be a reason why you aren’t getting results. Even as you spend more time on your work, you can’t seem to get anything constructive done. While I’m normally productive, I get into occasional ruts (especially when I’ve been working back-to-back without rest). During those times, I can spend an entire day in front of the computer and get nothing done. It can be quite frustrating.

        Over time, I have tried and found several methods that are helpful to pull me out of a rut. If you experience ruts too, whether as a working professional, a writer, a blogger, a student or other work, you will find these useful. Here are 12 of my personal tips to get out of ruts:

        1. Work on the small tasks.

        When you are in a rut, tackle it by starting small. Clear away your smaller tasks which have been piling up. Reply to your emails, organize your documents, declutter your work space, and reply to private messages.

        Whenever I finish doing that, I generate a positive momentum which I bring forward to my work.

        2. Take a break from your work desk.

        Get yourself away from your desk and go take a walk. Go to the washroom, walk around the office, go out and get a snack.

        Your mind is too bogged down and needs some airing. Sometimes I get new ideas right after I walk away from my computer.

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        3. Upgrade yourself

        Take the down time to upgrade yourself. Go to a seminar. Read up on new materials (#7). Pick up a new language. Or any of the 42 ways here to improve yourself.

        The modern computer uses different typefaces because Steve Jobs dropped in on a calligraphy class back in college. How’s that for inspiration?

        4. Talk to a friend.

        Talk to someone and get your mind off work for a while.

        Talk about anything, from casual chatting to a deep conversation about something you really care about. You will be surprised at how the short encounter can be rejuvenating in its own way.

        5. Forget about trying to be perfect.

        If you are in a rut, the last thing you want to do is step on your own toes with perfectionist tendencies.

        Just start small. Do what you can, at your own pace. Let yourself make mistakes.

        Soon, a little trickle of inspiration will come. And then it’ll build up with more trickles. Before you know it, you have a whole stream of ideas.

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        6. Paint a vision to work towards.

        If you are continuously getting in a rut with your work, maybe there’s no vision inspiring you to move forward.

        Think about why you are doing this, and what you are doing it for. What is the end vision in mind?

        Make it as vivid as possible. Make sure it’s a vision that inspires you and use that to trigger you to action.

        7. Read a book (or blog).

        The things we read are like food to our brain. If you are out of ideas, it’s time to feed your brain with great materials.

        Here’s a list of 40 books you can start off with. Stock your browser with only the feeds of high quality blogs, such as Lifehack.org, DumbLittleMan, Seth Godin’s Blog, Tim Ferris’ Blog, Zen Habits or The Personal Excellence Blog.

        Check out the best selling books; those are generally packed with great wisdom.

        8. Have a quick nap.

        If you are at home, take a quick nap for about 20-30 minutes. This clears up your mind and gives you a quick boost. Nothing quite like starting off on a fresh start after catching up on sleep.

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        9. Remember why you are doing this.

        Sometimes we lose sight of why we do what we do, and after a while we become jaded. A quick refresher on why you even started on this project will help.

        What were you thinking when you thought of doing this? Retrace your thoughts back to that moment. Recall why you are doing this. Then reconnect with your muse.

        10. Find some competition.

        Nothing quite like healthy competition to spur us forward. If you are out of ideas, then check up on what people are doing in your space.

        Colleagues at work, competitors in the industry, competitors’ products and websites, networking conventions.. you get the drill.

        11. Go exercise.

        Since you are not making headway at work, might as well spend the time shaping yourself up.

        Sometimes we work so much that we neglect our health and fitness. Go jog, swim, cycle, whichever exercise you prefer.

        As you improve your physical health, your mental health will improve, too. The different facets of ourselves are all interlinked.

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        Here’re 15 Tips to Restart the Exercise Habit (and How to Keep It).

        12. Take a good break.

        Ruts are usually signs that you have been working too long and too hard. It’s time to get a break.

        Beyond the quick tips above, arrange for a 1-day or 2-days of break from your work. Don’t check your (work) emails or do anything work-related. Relax and do your favorite activities. You will return to your work recharged and ready to start.

        Contrary to popular belief, the world will not end from taking a break from your work. In fact, you will be much more ready to make an impact after proper rest. My best ideas and inspiration always hit me whenever I’m away from my work.

        Take a look at this to learn the importance of rest: The Importance of Scheduling Downtime

        More Resources About Getting out of a Rut

        Featured photo credit: Joshua Earle via unsplash.com

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