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Unformatted text preview: Irwin, Basic Engineering Circuit Analysis, 91E 1 4.51 A Ell-ﬂ shunt resistor is used to measure current in a
fuel—cell circuit. The voltage drop across the shunt
resistor is to be used to measure the current in the circuit.
The maximtu'n current is 242! A. Design the circuit shown
in Fig. P4.51 so that a wltmeter attached to the output
will reazl '0 volts whenthe crureut is (island 20V when
ﬂleclureutislﬂA.Becareﬁr]oottoloedtheshunt resistor, since loading will CﬂlJSB an inaccurate reading. thmeler Flgure P461
SOLUTION: circuit and v0 = 20v Chapter 4: Operational Ampliﬁers Problem 4.51 2 Irwin, Basic Engineering Circuit Analysis, 9/E a gain (9,; lo 425 mam with a barium
mp“; .TAQ (jg-amp Ahouﬂd bit a %Oﬂ—lhm%}i'm3 Con/figcunh‘an ~ IO: "lL Q1
R1: QK_(2. Problem 4.51 Chapter 4: Operational Amplifiers ...
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- Spring '08