Question about Extech EX820 True Rms Clamp On Electric Current Meter With Infrared Thermometer

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How could one create a electric current and change to magnetic field?

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Hi,

It sounds like you are trying to make an electromagnet .. for small scale purposes try the information at this link http://www.wikihow.com/Make-an-Electromagnet

If this helps please leave feedback

Posted on Feb 05, 2010

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Posted on Jan 02, 2017

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NO ELECTRICAL POWER . GEN RUNS


Hi!

We have a put together a guide here to assist you in these situations. It will guide you through testing and repairing the Generator. : https://www.generatorguru.com/need-help/
Regards,The Generator Guru Team

image - best-vhadt2dsdy2ffi30hpfrh3ev-5-0.jpg

Jun 16, 2018 | Electrical Supplies

2 Answers

How does a walk through metal detector work?


Exactly the same way the detectors on a beach work.
When electricity flows through the transmitter coil, it creates a magnetic field all around it. If you sweep the detector above or alongside a metal object (such as this old grey spanner or a gun), the magnetic field penetrates right through it. The magnetic field makes an electric current flow inside the metal object and causes a change in the flux of the coil that is detected by a sensor inside the detectors electronics.

Apr 25, 2018 | Retail Supplies

1 Answer

Honda generator not producing electrical current


Generators rely on a residual magnetic field to "kick start" the current making process. Yours has lost this field. Easy enough to fix however.
Plug in an electric drill while it's running. Squeeze the trigger and manually twist the end of the drill (this will act as a miniature generator, as the Honda has lost its magnetic permeability and this motor rotating in reverse will generate a small current and restore it). Take care as, as soon as you spin it fast enough to develop a current, the generator will pick up on this current and start generating it's own current; energizing the drill. Once the generator starts generating current, it will repair itself.

Dec 25, 2017 | Honda Electrical Supplies

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No 110 voltage


Check the circuit breakers for a tripped one. If all OK, then the brushes may need to be replaced. Here's a tip on how to flash the field in the generator: This tip comes from the Briggs & Stratton Customer Education Department. As an alternative to flashing a rotor winding with a battery applied to the brushes, an electric drill may be used. Follow these steps to flash the generator:
  • Plug the electric drill into the generator receptacle. (Cordless drills do not work)
  • If the drill is reversible, move the direction switch to the forward position.
  • Start the generator
  • While depressing the trigger on the drill, spin the drill chuck in reverse direction. This will excite the field and the generator will now produce electricity. If spinning the chuck one direction does not work, try spinning the chuck in the other direction as you may have the reverse switch positioned backwards.
Use caution not to get your hand or other materials caught in the chuck. As soon as the field is excited, the generator will produce power and the drill will turn on.
The reason this works is because the electric motor in the drill will act as a small generator when spun backwards. The magnets in the drill's motor induce a voltage into the motor windings, which is fed back through the trigger, cord and into the generators receptacle. From there it goes into the power winding of the stator. The voltage going through the power winding creates a magnetic field, which is intensified due to the iron core of the stator laminations. The rotor intersects this magnetic field as it is spun past the power winding, thus inducing a voltage in the rotor winding. Once current flow is present in the rotor winding the rotor has been flashed.
If flashing the field does not make the generator work, you may have additional problems, besides a lack of magnetism in the rotor. Further testing will be needed. Hopefully, this will give a simple way to field flash your generator if needed

Aug 11, 2016 | Electrical Supplies

1 Answer

How Does an MRI Work


Magnetic resonance imaging (MRI), also known as nuclear magnetic resonance imaging, is a technique for creating detailed images of the human body.
The human body is mostly water. Water molecules (H20) contain hydrogen nuclei (protons), which become aligned in a magnetic field. An MRI scanner applies a very strong magnetic field (about 0.2 to 3 Teslas, or roughly a thousand times the strength of a typical fridge magnet), which aligns the proton "spins."
The scanner also produces a radio frequency current that creates a varying magnetic field. The protons absorb the energy from the variable field and flip their spins. When the field is turned off, the protons gradually return to their normal spin, a process called precession. The return process produces a radio signal that can be measured by receivers in the scanner and made into an image.
What is an MRI Magnetic Resonance Imaging

Jul 23, 2016 | Televison & Video

1 Answer

When were electromagnets invented?


In 1820 Hans Christian Orsted discovered that an electric current could create a magnetic field and in 1824 William Strugeon invented electromagnet.

Jan 15, 2014 | Tools & Hardware - Others

3 Answers

How does a basic metal detector work?


The simplest type of metal detector contains an oscillator which produces a current through a coil which in turn creates a magnetic field. If a piece of electrically conductive metal is close to the coil, it will produce an electric field of its own which is then measured and detected by the metal detector.

Jan 10, 2013 | Retail Supplies

2 Answers

I have a 1960 chevrolet with a generator. I would like to convert to a one wire altenator. What is the wiring needed to connect this up.


You need to replace original bulbs, sockets, fuse box, starter etc with 12v equivalents or better yet check w/ JC Whitney company (Chicago) they specialized in conversion kits.

Mar 15, 2011 | Chevrolet Corvette Cars & Trucks

1 Answer

How to flash or remagnitize Coleman Powermate 6875 or Husky 40500


Field Flashing of Portable Generators This tip comes from the Briggs & Stratton Customer Education Department. As an alternative to flashing a rotor winding with a battery applied to the brushes, an electric drill may be used. Follow these steps to flash the generator:
  • Plug the electric drill into the generator receptacle. (Cordless drills do not work)
  • If the drill is reversible, move the direction switch to the forward position.
  • Start the generator
  • While depressing the trigger on the drill, spin the drill chuck in reverse direction. This will excite the field and the generator will now produce electricity. If spinning the chuck one direction does not work, try spinning the chuck in the other direction as you may have the reverse switch positioned backwards.
Use caution not to get your hand or other materials caught in the chuck. As soon as the field is excited, the generator will produce power and the drill will turn on.
The reason this works is because the electric motor in the drill will act as a small generator when spun backwards. The magnets in the drill's motor induce a voltage into the motor windings, which is fed back through the trigger, cord and into the generators receptacle. From there it goes into the power winding of the stator. The voltage going through the power winding creates a magnetic field, which is intensified due to the iron core of the stator laminations. The rotor intersects this magnetic field as it is spun past the power winding, thus inducing a voltage in the rotor winding. Once current flow is present in the rotor winding the rotor has been flashed.
If flashing the field does not make the generator work, you may have additional problems, besides a lack of magnetism in the rotor. Further testing will be needed. Hopefully, this will give a simple way to field flash your generator if needed - Bruce Perrault

Apr 27, 2010 | Coleman Powermate Powermate 5000W...

1 Answer

My generator runs but does not prouduce electricity


The basic cause is the rotating magnetic field has collapsed.

Causes of that can include blown rotating diodes, blown regulating capacitor, loss of magnetic remanence.

Search google for things to try. IF it is only loss of the small bit required magnetism, SOME have found plugging in an electric drill that DOES NOT have a throtle speed control and spining the drill with it switched on will create enough field to start the unit generating. Blown diodes or capacitor requires replacement of parts.

If the unit is a permanent magnet type (usually only small units) then there would be open circuit in the wiring or the rotor has somehow lost the magnetism.

SOME units have brushes to excite the field with a direct current. Loss of brush contact to the slip rings or the rectifier supplying the current will cause no output of the generator.

In your case, the Dewalt DG6000 is a brushless type. The most probable cause for the problem is the regulating capacitor. IF the unit has been overloaded or a short placed on it, then the rotating diode(s) have probably been shorted. Searching google you will find that there is a method using light bulbs in series from utility pwer to attempt recharging the rotor. This will ONLY work if the parts have not been damaged.

Oct 26, 2009 | Dewalt DG6000 Heavy Duty 6000 Watt Gas...

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