September 2008
Beginner
834 pages
37h 13m
English
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6.11 PROBLEMS
(Opamps are μA 741 units unless specified otherwise. μA 741 has Ri = 2 MΩ, Ro = 75 Ω, vio = 2 mV, IB+ = IB- = 100 nA, Vsat = ±10 V, current limit = ±20 mA and slew rate = 0.5 V/μs.)
- Design an Opamp circuit to produce vo (t) = 3 + 7 sin200πt V using ± 12 V power supply and a signal source vS(t) = 0.5sin200πt V.
- Find iL, is, io and vo in the voltage to current converter in Fig. 6.11-1 designed to produce a constant current in a 10 Ω load.
Fig. 6.11-1
- Repeat Problem 2 if Rl = R2 = R3 = R4 = 120 Ω. (Hint: The Opamp works in the current-limited mode.)
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- Show that the current in the load resistance RL in the circuit in Fig. 6.11-2 ...
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