Category Archives: Multimeter

Why do my electric scooter batteries not work?

By John | Published: March 1, 2012
Why do my electric scooter batteries not work? Hi, I tested my new scooter batteries with a multimeter and they all say 36 volt. I tested the 12v it says 12v. I tested my old batteries and It never goes below 10.95 volts. I though 9 volt was where it indicates batteries are [...]
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Physics geniuses: Can someone draw me a sensor circuit?

By John | Published: February 29, 2012
Physics geniuses: Can someone draw me a sensor circuit? A “hot wire anemometer” is based on the fact that wind blowing over a hot wire will cool it. An electric current heats a wire. Wind blowing over the wire cools it, decreasing the wire’s resistivity and thus changing the wire’s resistance. Higher wind speeds mean more [...]
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Aspiring Electrician … but found out i’m colorblind !?

By John | Published: February 27, 2012
Aspiring Electrician … but found out i\’m colorblind !? I’m currently in my first year in college, studying Electrical Engineering Technology. While working in labs, I discovered that I have color blindness with certain colors! I figured it wasn’t a big deal at the time because I would just use my digital multimeter to double check [...]
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want to drop 12 vdc on a car to 9vdc on a ammeter in car on 73 elcamino?

By John | Published: February 20, 2012
want to drop 12 vdc on a car to 9vdc on a ammeter in car on 73 elcamino? like what
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What does 10A mean on a multimeter?

By John | Published: February 9, 2012
What does 10A mean on a multimeter? If I want to measure DC Current on Orange Juice, do I switch the knob to 200 mA or 10A? And do I put the red wire in the V-O-mA Temp Jack or 10A Jack?
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How can the resistance in a voltmeter be reduced?

By John | Published: February 8, 2012
How can the resistance in a voltmeter be reduced? If this isn’t possible, THEN what are some errors that limit the ability of a very simple voltaic cell to obtain the predicted value of voltage?
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An ammeter having a scale of 0-1A DC and a resistance of 1 ohm is connected across a source of 300 millivolts?

By John | Published: January 29, 2012
An ammeter having a scale of 0-1A DC and a resistance of 1 ohm is connected across a source of 300 millivolts? An ammeter having a scale of 0-1A DC and a resistance of 1 ohm is connected across a source of 300 millivolts. What will it indicate?
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how we can judge the value of earth resistance is within 20 ohms ,when we are checking the earth resistance.?

By John | Published: January 18, 2012
how we can judge the value of earth resistance is within 20 ohms ,when we are checking the earth resistance.? i have little experience with earth pit and their resistance value, we are getting only 1 ohm to max.10 ohm. it is good and it is mandatory also.my doubt here is, if we check one normal [...]
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What is the cost of digital voltmeter in india?

By John | Published: January 17, 2012
What is the cost of digital voltmeter in india?
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Should I try to fix or let sony handle it.?

By John | Published: January 3, 2012
Should I try to fix or let sony handle it.? I just got the sony DAVHDX975WF home theater system (broken) Im only a 2 year done Electronics engineering student with very limited electronic repairing experience. Should I open up the dvd player and try to figure out why its not working, or should I simply give [...]
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