Selasa, 28 Agustus 2012

Alalog Multimeters Vs. Digital Multimeters

From time to time I still pull my Analog Multimeter out of my Tool Box and put it back in to service. Sounds crazy doesn't it? I know what you are thinking, why in the world would anyone want to use an Analog Multimeter when you could be using a Digital Multimeter with all those bells and whistles.

Well there are just times I just like to pull out the old trusty analog meter and reflect on when I first started in the field of Electronics and Digital multimeters were the new kid on the block! I have to admit, when it comes time where accuracy is a factor, I will always go the direction of a Digital Multimeter, but when working on hobby projects, it's always fun to go back to old school.

Analog vs. Digital:

Analog Meters are cheaper than their Digital counterparts.

Analog and Digital Meters both use test leads, one black and one red. Red always representing positive and black representing ground.

Both meters measure voltage, ohms, current and resistance. Although unless you are measuring resistance or making a continuity check,the Analog Meter will continue to function with out a battery, where a Digital Multimeter is dead in the water when the battery needs replaced.

Analog Meters can be read incorrectly if you are viewing the meter from the side versus straight on. The Digital Meter, well you can read the display from just about any angle and know that what you see is the correct reading.

Analog Meters don't have all the bells and whistles available to them like the Multimeters of today. Digital multimeters can be interfaced with your computer, they can read temperature, humidity, frequency and a gambit of other features that you just can't get with an Analog Meter.

When making measurements and you misjudge the scale on the Analog Meter your reading will be off the scale, where with the Digital Multimeter most models will self adjust or indicate on the LED readout that you need to change the scale for an accurate reading.

Bottom line here is I am not arguing that trashing your Digital Multimeter is something you might want to do. There is no doubt that when it comes to convenience and accuracy the digital side of things is the way to go. But I have to admit that at times, when working on electronic projects that don't require pinpoint accuracy, it's still fun to pull the old Analog Meter out of the tool bag and put it back in to service.

Mark Boehm is the president of M-B Electronics, Inc, Electronic Toolbox, Inc He has over 25 years of experience in the Audio Visual and Electronics Industry and a Bachelors degree in Electronic Engineering.

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