Simple Synthetic ECG Generation via PWM Output of Microcontroller

Bio-potential signal generators are widely used for education, testing of devices and scientific purposes. Due to their high prices, these generators cannot be supplied in sufficient numbers. In this study, an ECG generator that generates a simple synthetic ECG and is inexpensive is proposed. The generator obtains the ECG signal with a simple ECG model and the internal Pulse Width Modulation (PWM) port of the microcontroller is used to obtain the analog signal. In this way, an ECG signal generator can be obtained with less electronic material. The circuit is built and the experimental results of the circuit are given.