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Holmarc

HO-ED-EM-09 B-H Curve / Magnetic Hysteresis Curve Experiment

$3,645.00

B-H Curve / Magnetic Hysteresis Curve Experiment

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. Remanence & coercive field strength of soft & laminated iron cores evaluated with the help of software.

    600 Number of turns
    2 Ohm
    21 Gauge

Experiment:

        Magnetic hysteresis loop recorded for soft iron core and laminated core electromagnet
        Find the coercive force, remanence, Residual magnetism, BH curve saturation from graph

 

Video:    Click HERE for Video 

 

Relating to the magnetizing properties of a material especially an electromagnet; which is first magnetized & demagnetized 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 Delivery:

Electromagnet
DC current power supply
Gauss probe (rectangular type)
RS232 cable & converter
Power socket & DC connector cable
Laptop (Optional)
Accessories

Dust Protective cover
Instruction Manual