Electronic apparatus for biological research electronicappara00dona Year: 1958 INDUCTANCES, CAPACITANCES AND RESISTANCES We have Z, = R+jl(oL - ^j 1 //. R Let Q\c) then, letting ^0 — /'A/-\l/2 (^C)i 7 — — '^^ coC a> Mr. '«! Q WJ CO 1 f 1 /a> co„ CO ;)1 _j_/i_+(i^_^A'r' CO oC\Q' .CO. CO \jo}^C is a constant for the circuit. In Graph 24, the impedance of a series resonant circuit is plotted in the form \Z^ oi^C as a function of frequency for various Q. Parallel L-C-R circuit connected to constant-current generator The parallel circuit of Figure is of importance because, if a capacita
Electronic apparatus for biological research electronicappara00dona Year: 1958 INDUCTANCES, CAPACITANCES AND RESISTANCES We have Z, = R+jl(oL - ^j 1 //. R Let Q\c) then, letting ^0 — /'A/-\l/2 (^C)i 7 — — '^^ coC a> Mr. '«! Q WJ CO 1 f 1 /a> co„ CO ;)1 _j_/i_+(i^_^A'r' CO oC\Q' .CO. CO \jo}^C is a constant for the circuit. In Graph 24, the impedance of a series resonant circuit is plotted in the form \Z^ oi^C as a function of frequency for various Q. Parallel L-C-R circuit connected to constant-current generator The parallel circuit of Figure is of importance because, if a capacitance be connected across a real inductor, then the real inductor is represented by an ideal inductance L in series with the resistance of the wire comprising the \ Open at 6 f = 0 (§ / 4 Lighrtly damped r=0 Figure Figure inductor, R. If this circuit be suddenly fed with a current /, it settles down to a final state in which all of / flows through L and R by one of three ap- proaches—oscillatory, critically damped, or heavily damped {Figure ) in a manner analogous to the capacitance voltage when series L-C-R is connected to a constant-voltage generator. As in the series case, critical damping occurs at R^jAD = 1/LC. 77
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