Chaotic conditions of the human heart cause arrhythmia. Once heart rhythm, chaos control through thresholding control can be applied. In this paper, a non-linear equivalent circuit, for simulating heart behavior is suggested and tested. It is based on a set of differential equations that models heart dynamics. The strategy here simply involves monitoring a single state variable and resetting it when it exceeds a predetermined threshold. The success of the technique manifests itself in rapidly controlling different chaotic electrical cases including heart arrhythmia by enforcing the heart to resume structure stability.  The described thresholding control technique has proven to be applicable to rhythm disorders including, fibrillation, bradycardia (heart slowness), tachycardia (rapid or accelerated), flutter, intermittency, and even cardiac arrest. The controller designs described here can lead to the development of future smart clinical pacemakers.started, it can lead to death if left uncontrolled. To retain normal