Abstract
A simple design of magnetic fluxmeter using 8085 microprocessor has been described. The circuit accurately measures the strength of magnetic field using the magnetic field dependent properties of a unijunction transistor. The transistor forms part of relaxation oscillator circuit whose frequency is affected by the presence of magnetic field. The magnetosensitivity of the proposed circuit is 40 counts Tesla−1. One of the salient features of the present design is that the microprocessor controls the ON-OFF action of electromagnet.
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