Design and Implementation of 12 Channel Electrocardiogram Device

In this paper a cost effective Electrocardiogram machine has been proposed and successfully implemented. Electrocardiogram signal is a very low voltage (10uV to 5mV whose typical value is 1mV)signal generated by the heart, which is multiple times bellow the noise level. Movement of different internal organs also create different types of noise. Different types of filters and amplifiers are used to remove the unexpected signals and to amplify the expected signal to get the desired signal. Finally ECG machine has been developed and successfully experimented on human body.