THE EFFECT OF INDUCTOR RESISTANCE ON DEFIBRILLATION ENERGY FROM ELECTROCARDIOGRAPH ENDURANCE TEST SYSTEM

Abstract

Electrocardiograph endurance test system has two work processes like a defibrillator. Charging process produces energy stored in a capacitor (ES), while discharges process produces defibrillation energy. The value of defibrillation energy without any connection to the electrocardiograph (E2) at test system is influenced by the resistance values of the inductor (RL). In previous research, test system only produced E2 = 19,83 joule, This was caused by the inductor used with RL value = 72 Ω. The purpose of this research is to select inductor resistance value to get the best and the most efficient E2 value. Range value used in test system was 1–10 Ω, which was based on International Electrotechnical Commission (IEC) 60601-2-27 clause 201.8.5.5.2 standard. Every RL measured voltage on 100 Ω point at interval time (∆t)= 0,02 ms was obtained from Multisim software simulation. The result of the simulation indicated that if peak voltage increased, then the used RL value was approaching zero. On the other side, measured Voltage data was used as a parameter in total E2 calculation every range of RL value, then result of E2 total calculation was compared to ES value to achieve energy ratio value. RL value = 1 Ω was the most efficient because it could generate energy ratio around 98,45% with E2 = 393,80 joule, while energy ratio when RL value = 10 Ω was not very efficient because it only generated energy ratio around 89,58% with E2 = 358,33 joule.