Kurniawati, A., Hamzah, T., & Indrato, T. B. (2020). A Low-Cost Transcutaneous Electrical Nerve Stimulation Measuring Device Using Frequency-to-Voltage and Current-to-Voltage . Journal of Electronics, Electromedical Engineering, and Medical Informatics, 2(2), 65-70. https://doi.org/10.35882/jeeemi.v2i2.5