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

Electrocardiograph endurance test system ha s two work process es like defibrillator. Charg ing process produce s energy stored in capacitor (E S ) and discharges process produce defibrillation energy. Defibrillation energy without connect to electrocardiograph (E 2 ) at test system is influenced by the resistance values of inductor (R L ). In previous research, test system only produce s E 2 = 19,83 joule, this is caused by the inductor used with value R L = 72 Ω . The purpose of this research is to select inductor resistance value to get good and efficient value E 2 . Range value R L used in test system was 1–10 Ω , based on standar International Electrotechnical Commission (IEC) 60601-2-27 clause 201.8.5.5.2 . Voltage measured in point 100 Ω every time interval (∆t) 0,02 ms obtained from multisim software simulation. The result of simulation indicated if peak voltage increased, then value R L was used approach zero. In other side, measure d Voltage data was used as parameter to calculate total E 2 in every range of R L value, then result E 2 total was compared to E S value to get energy ratio value . Value R L = 1 Ω was the most effi cient because has ratio energy value 98,45% with E 2 = 393,80 joule, while energy ratio when R L = 10 Ω was not effi cient because only had energy ratio value 89,58% with E 2 = 358,33 joule .