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Unformatted text preview: 227 Derfte Eq.2.25. Hint: Use Eqs (3) and (4) fiorD Example 2.11 to express iE as a function of is. Solve Eq. (2) for i, and substitute the result into both Eqs. (5) and (6). Solve the "new" Eq. (6) for tr and subshtute this rcsult into tle "new" Eq. (5). Replace tr in the "new" Eq. (5) and solve for is. Note that because rcc appears only in Eq. (1), the solution for is involves the manipulation of only five equatiofls. 2r9 Find (a) t,, (b) ir, and (c) i, in the circuit in Eg. P2.29. Flgurc P2.29 1ko 500 0 2.30 Find rJ1 and os in the circuit shown in Fig. P2.30 6xa when oo equals 250 mV (Hirtr start at tle dght end of the circuit and work back toward os.) 4(} 24o" 12.5 I)...
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- Spring '07