Is it possible to have B-H curve using DC supply?

Yes, it is possible to obtain a B-H curve using a DC supply, but it typically requires a method to vary the magnetic field strength (H) while measuring the magnetic flux density (B). This can be done using a solenoid or similar device to create a uniform magnetic field and then gradually increasing the current to change H. The resulting B-H curve will show the relationship between magnetic flux density and magnetic field strength, illustrating the material's magnetic properties. However, the curve may not fully represent the behavior of the material under alternating current (AC) conditions, as it typically captures only the initial magnetization and saturation effects.