Tagasisidetegur pinge järgi (ingl. k. voltage feedback ratio) avatud sisendi korral: DU1 h12 = , kui DI1 = 0 DU 2 Vooluvõimendustegur (ingl. k. current gain) lühistatud väljundi korral: DI h21 = 2 , kui DU2 = 0 DI1 Väljundjuhtivus (ingl. k. output admittance) avatud sisendi korral: DI 2 h22 = , kui DI1 = 0 DU 2 Lisaks h-parameetritele leiavad kasutust veel y-parameetrid (juhtivusparameetrid) ja z- parameetrid (takistusparameetrid). Elektroonika alused. Teema 3 Pooljuhtseadised 23 Bipolaartransistore võib liigitada mitmeti, näiteks:
h-parameetrite määramiseks on vajalik lühistatud väljundi reziim (U 2 = 0) ja avatud sisendi reziim (I1 = 0). h-parameetrid avalduvad järgmiselt: s.o. transistori sisendtakistus (Input impedance) lühistatud väljundi korral; s.o. tagasisidetegur (voltage feedback ratio) avatud sisendi korral; s.o. vooluvõimendustegur (current gain) lühistatud väljundi korral; s.o väljundjuhtivus (output admittance) avatud sisendi korral. On oluline märkida, et CB lülitusel h21 ja CE lülitusel h21. ELEKTROON1KAKOMPONENDID lk.45 Ligikaudsus tuleneb sellest, et h on määratud lühistatud väljundi korral. Tegelikus tööolukorras on aga väljundis suhteliselt väike takistus (võrreldes kollektorsiirde takistusega), mistõttu nad kujunevadki väga lähedasteks.
KING CLAUDIUS Thou still hast been the father of good news. 56 LORD POLONIUS Have I, my lord? I assure my good liege, I hold my duty, as I hold my soul, Both to my God and to my gracious king: And I do think, or else this brain of mine Hunts not the trail of policy so sure As it hath used to do, that I have found The very cause of Hamlet's lunacy. KING CLAUDIUS O, speak of that; that do I long to hear. LORD POLONIUS Give first admittance to the ambassadors; My news shall be the fruit to that great feast. KING CLAUDIUS Thyself do grace to them, and bring them in. Exit POLONIUS He tells me, my dear Gertrude, he hath found The head and source of all your son's distemper. QUEEN GERTRUDE I doubt it is no other but the main; His father's death, and our o'erhasty marriage. KING CLAUDIUS Well, we shall sift him. Re-enter POLONIUS, with VOLTIMAND and CORNELIUS Welcome, my good friends! Say, Voltimand, what from our brother Norway
Stoke, if the drawing-room were larger; but Ashworth is too far off! I could not bear to have her ten miles from me; and as for Pulvis Lodge, the attics are dreadful." Her husband allowed her to talk on without interruption while the servants remained. But when they had withdrawn, he said to her: "Mrs. Bennet, before you take any or all of these houses for your son and daughter, let us come to a right understanding. Into one house in this neighbourhood they shall never have admittance. I will not encourage the impudence of either, by receiving them at Longbourn." A long dispute followed this declaration; but Mr. Bennet was firm. It soon led to another; and Mrs. Bennet found, with amazement and horror, that her husband would not advance a guinea to buy clothes for his daughter. He protested that she should receive from him no mark of affection whatever on the occasion. Mrs. Bennet could hardly comprehend it. That
of a select few who have outwitted death. T h e I m m o r t a l s o f ancient Greece were a very exclusive club. Only the gods and a smattering o f l u c k y humans were ex empt from death, and only those humans who had done something remarkable 179 T H E W R I T E R ' S JOURNEY ~ T H I R D EDITION Christopher Vogler or pleasing to the gods would be granted admittance by Zeus. Among these were Hercules, Andromeda, and Aesculapius. Battlefield promotions and knighthood are ways of recognizing that heroes have passed an ordeal and entered a smaller group of special survivors. Joseph Camp bell's overall name for what we are calling Act Two is "Initiation," a new beginning in a new rank. T h e hero after facing death is really a new creature. A woman who has gone through the life-threatening territory of childbirth belongs to a different order
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