Electricity & Magnetism
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.
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.
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Quantity : 1 no.
Quantity : 1 no.
Quantity : 1 no.
Quantity : 1 no.
Quantity : 1 no.
Quantity : 1 no.
Dust Protective cover
Instruction Manual
Established in 1993, Holmarc Opto-Mechatronics Ltd manufactures variety of scientific and engineering instruments for research, industry and education.
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