Development of a Digital Multimeter: A Low-Cost Design Approach

Measurement of electrical parameters like current and voltage are crucial in field of measurement. Frequency indicate the state of rhythmic behavior of signal and proper change in system with respect to time. Multimeter are used in measuring various electrical parameters including resistance, capacitance and inductance. This paper shed lights on the development of a low cost Multimeter using digital electronic circuitry. The proposed device is able to measure various electrical parameter in the certain specified range. A simple, but highly accurate, sampling method for the measurement of frequency in combination of other parameters are corporate here by means of a digital multimeter(DMM). In modern electronics laboratory a digital multimeter with high precision and digital displaying mechanism is an essential device. This paper describes the mechanism of a digital multimeter that can measure electrical parameters in under the particular range with specified resolution. accuracy of digital multimeter discussed in this paper is quite good, it can be used where precise measurement at low cost is required.