Development of a digital phase angle meter

This paper presents a simple yet effective method to determine the phase angle difference across any load connected to the supply. The proposed idea works on conditioning of the current and voltage signals in and across the load line and displays the phase difference through a Digital Panel Meter. It can indicate leading or lagging phase through a lead-lag indicator circuit. The authors simulated the whole electronic circuit in Proteus circuit simulation tool. The novelty of the project lies in the simplicity of the technique to determine the phase angle difference and the cost-effective implementation of the electronic circuit.