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Electricity & Magnetism


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B-H Curve / Magnetic Hysteresis Curve Experiment
Model: HO-ED-EM-09
Price : $ 1,917.00

Holmarc’s B-H curve experiment model no: HO-ED-EM-09 is used for the analysis of the magnetic hysteresis loop / B-H curve for soft iron & laminated iron cores used in two coils bound electromagnet with DC current supply. Magnetic field intensity H & flux density B is measured & hysteresis loop recorded using the dedicate software. Remenance & coercive field strength of soft & laminated iron cores evaluated with the help of software.

    600 Number of turns
    2 Ohm
    21 Gauge
Relating to the magnetising properties of a material especially an electromagnet; which is first magnetised & demagnetised we can notice a delay or lagging in magnetic material known as magnetic hysteresis. The lagging of magnetic flux density (B) behind the magnetic field strength (H) is very interesting using different types of soft / hard ferromagnetic materials. Our software automatically tracks the B-H curve for soft iron core material which is used in electromagnet. As we know, when magnetic field increases; as we increase the current in dc power supply magnetic flux density also increases in the electromagnetic slot which is measured automatically using gauss probe provided in the slot. Flux density reaches a maximum & saturated as we can see in hysteresis loop however magnetic field goes to further increment.

When we decrease the magnetic field flux density retain in the core shows residual magnetism Br. This time Magnetic field H is zero. Holmarc B-H software as per theory increase the magnetic field H in the reverse direction by increasing the current (i) for reducing flux density to zero & find Coercive force / field Hc. Further increment of H saturates the B in reverse direction. Decrease the H in to zero again, while the residual flux present in the reverse direction. Software increases the H value to make flux density zero & continues increment of H makes the flux density B saturates again. So this track / loop is known as magnetic hysteresis or B-H curve plot.

Either using soft/hard iron core materials in the electromagnet the size of hysteresis loop becomes different. In application by notice the hysteresis loop one can identify the heat loss/energy loss in transformers. Larger the hysteresis size greater the loss. Low hysteresis core materials are used in making electromagnets, solenoids, relays etc. Hysteresis in hard core material is useful for making hard disk drives, magnetic floppy disc etc.

Scope of Supply

Electromagnet

Quantity : 1 no.

DC current power supply

Quantity : 1 no.

RS232 cable & converter

Quantity : 1 no.

Laptop (Optional)

Quantity : 1 no.

Accessories

Dust Protective cover
Instruction Manual

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Established in 1993, Holmarc Opto-Mechatronics Ltd manufactures variety of scientific and engineering instruments for research, industry and education.

ISO 9001:2015 Made in INDIA

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   +91 920-719-7772 / 6 / 1
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