The application of consistent, highly low-frequency pulsed magnetic fields by a specialized coil system is necessary for bioelectromagnetic applications. This paper presents a detailed discussion of a mono-axial circular Helmholtz coil's design, construction, and set up to generate and maintain a homogenous magnetic field using static/alternating current. The custom-made device was fabricated to achieve cost-effectiveness and less complexity than similar commercial systems. The monoaxial Helmholtz coil can generate a magnetic field (1 mT≤B≤3 mT) while maintaining field homogeneity (≥90%) around the center of coils in each axis. This paper highlights the two main design aspects: first, there is a correlation between wire gauge, coil resistance, coil current, and wire resistance; second, there is the magnetic field validation regarding the homogeneity around the coil's center