Thevenin's Theorem ( Circuit Analysis )
මෙම ප්රමේය පරිපථ විශ්ලේෂණය යටතේ පවතී. නමුත් මෙම ප්රමේය අදාළ වන්නේ වෝල්ටීයතා සහ ධාරා සම්බන්ධයෙන් පරිපථ පරාමිතීන් (ප්රතිරෝධය(R), ප්රේරණය(L), ධාරණාව(C), සංඛ්යාතය(F)) නියත වන රේඛීය පරිපථ සඳහා පමණි. එබැවින්, පරිපූර්ණ ප්රතිරෝධක, ප්රේරක, ධාරිත්රක සහ නියත සංඛ්යාත සහිත සියලුම පරිපථ රේඛීය වේ. ඔබට ඇත්ත වශයෙන්ම අදහස නොලැබුනේ නම් මේ ආකාරයට පරිපථය ගැන සිතන්න. V = IZ (ප්රතිරෝධකයක් සඳහා Z = R) සෑම සංරචකයක් සඳහාම අදාළ වන්නේ නම් එය රේඛීය පද්ධතියක් වන අතර ප්රමේයය අදාළ වේ.
තවදුරටත් ඉදිරියට යාමට පෙර මෙම ප්රමේයයේ ප්රායෝගික යෙදුම් තේරුම් ගනිමු. ප්රතිරෝධක, ධාරිත්රක, ප්රේරක රාශියක් සහිත රේඛීය පරිපථයක් ගැන සිතන්න, සමස්ත ක්රියාකාරිත්වය වැඩි දියුණු කිරීම සඳහා නෝඩ් දෙකක් අතර තවත් ප්රතිරෝධකයක් එක් කිරීමට අපට අවශ්යය. ඔබට පෙනෙන පරිදි අපට සෘජුවම ප්රතිරෝධකයට පරිපථයට එක් කළ නොහැක, නැතහොත් අප පද්ධතියට විශාල අවදානමක් වනු ඇත. දැන් ඒ සඳහා අපට මෙම ප්රමේයය භාවිතා කර මුල් පරිපථයේ අඩු කරන ලද පරිපථ ආකෘතියක් වෝල්ටීයතා ප්රභවයක් (battery) සහ සම්බාධනයකින්(Impedance) පමණක් සටහන් කළ හැකිය.
දැන් එය සරල DC පරිපථයකට යෙදීමෙන් න්යාය තේරුම් ගනිමු.
මා ඉහත විස්තර කළ පරිදි, මෙහි නව සංරචකය (ප්රතිරෝධකය) සම්බන්ධ කර ඇති නෝඩ් දෙක A සහ B වේ.
Thevenin’s සම්බාධනය සොයා ගැනීම සඳහා, සෑම වෝල්ටීයතා ප්රභවයක්ම කෙටි පරිපථයක් සහ සෑම ධාරා ප්රභවයක්ම විවෘත පරිපථයකි. දැන් එය සම්බාධනය සහිත පරිපථයක් පමණි. Thevenin’s Impedance යනු A සහ B අතර සම්බාධනයයි.
Thevenin හි වෝල්ටීයතාවය සොයා ගැනීමට, කර්චොෆ්ගේ නියමය භාවිතා කරමින් A සහ B අතර විවෘත පරිපථ වෝල්ටීයතාවය ගණනය කරන්න.
AC පරිපථ සඳහා සංකල්පය සමාන වේ.
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Comments
@Jehan බොහොම ස්තුතියි!
Supiri❤