**Physics 427 - Advanced Electronics**

Here is a list of errata for the 3rd edition of *Principles of
Electronic Instrumentation*, by
Diefenderfer and Holton.

Note: Some of these may be corrected in your printing. There are additional errors in the first printing (1994), which are listed in an erratum in the Instructor's Solutions Manual.

inside the front cover, the abbreviation for kilo should be k (lower case), not K (upper case)

on p. 27, the formula for capacitors in series in equation 2-7 is wrong, the
left-hand side should be 1/C_{s}

on p. 27, in Fig. 2.4, the capacitor C_{3} has reversed polarity,
which is not correct
(this is actually important with electrolytics)

on p. 28, it is worth mentioning that equation 2-9 refers to the voltage *
drop*, in a way analogous to the voltage drop IR across a resistor.

on p. 29, eq. 2-12 should have the last term equal to q/C not Q/C since it is time-dependent

on p. 30, the line just before Example 2.2 should have v_{R} and v_{C}
in lower case, not upper case since they are time-dependent

on pp. 41-42, problem 9 is ill-posed, since the low input impedance of the subsequent stage will prevent C from charging to the specified voltage.

on p. 46, in eq. 3-6, the current amplitude should be upper case: I_{p}
not i_{p}

on p. 46, in eq. 3-8, the upper limit on the integral should be T = 2p/w and the prefactor should be 1/T = w/2p

on p. 48, for eq. 3-14, the definition of X_{C} is sometimes taken to
be positive, and then the sign is accounted for in a definition of the complex
Z.

For a consistent and careful
discussion of these definitions, I recommend the text *University Physics*,
by Ronald Reese (see Ch. 22).

on p. 52, eq. 3-35 should read **i** = (V_{in}/Z)
__/ (-tan__^{-1}__(X___{C}__/R)) __ (the
underline, of course, should be continuous, but I want to avoid using a gif
figure here)

on p. 52, eq. 3-37 should read **V _{C}** = (V

on p. 52 and 53, note that the value of X_{C} should be positive in
equations 3-40 and 3-41, or should be replaced by |X_{C}| to give
positive magnitudes.

on p. 65, in the fourth eq., the term 4900 kW should be 4900 W

on p. 66, the power in the load should be P_{L} = ... =
3.1 mW and the power in the source should be written P_{s} =
(5.6 mA)^{2} (4900 W) = 154 mW

on p. 177, in Fig. 8.37, the second occurrence of v_{i} should be v_{s}
(i.e., the input to the amp is v_{s})

on p. 178, the last term in equation 8-45 should be A_{v}bD'
(i.e., the v is a subscript)

on p. 178, in the bottom box of Fig. 8.38, the feedback is
b(v_{o}' + D') and in the sentence above
equation 8-45, the expression should have these primes

on p. 194, in the fifth line below eq. 9-31, R_{2} should be R_{f}

on p. 204, in the caption for Fig. 9.29, it should read "open loop gain of 10^{5}"

on p. 227, the right-hand side of equation 10-17 should be = R_{2}/(R_{1}
+ 2R_{2})

on p. 253, in Table 11.12, the column headings "hexadecimal number" and "binary" should be interchanged

on p. 276, in Fig. 12.21, erase the first two lines of the table, and change the caption to read ...divide by 16 ... (not ... divide by 6 ...)

on p. 370, at the end of line 16, the term is "heterodyne"

on p. B-4, the line prior to eq. B-17 should read "since V_{+} = 0"
and eq. B-18 should be V_{-} = - V_{out}/A
(this is unimportant for the subsequent eq. B-19, although it will be important
for a full description)