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 C₃ 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_in/Z) / (-tan^-1(X_C/R)) x X_C /-90^o  (the error was the same as in eq. 3-35) 

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_vbD' (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, R₂ should be R_f

on p. 204, in the caption for Fig. 9.29, it should read "open loop gain of 10⁵"

on p. 227, the right-hand side of equation 10-17 should be  =  R₂/(R₁ + 2R₂)

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)