EMRFD Chapter 2 Errata.

  (15 Jan 10)
p2.2, Fig 2.3.    The diode in the figure has the battery polarity wrong.   The correct figure is shown below. (27Sept09)


p2.2, right col, 0.8 inches down from top of text:  "collector" becomes "collector"  (24Feb03)

p2.4, left col, 2.1 inches down from text top.  The bxIb should be (beta)xIb  where (beta) is the Greek letter and the b in Ib is a subscript  (26Mar03)

p2.4,  left col, 3.2 inches down from top of text:   This should be ".....11.4 V across 100 k-Ohm, or 114 uA.  If transistor beta=100, the collector current is 11.4 mA."   Error was in the m and u related to milli and micro amp. (24Feb03)  

p2.4, right col, 4 lines up from text bottom.  Replace mF with uF.  (microfarad)  (24Feb03)

p2.5, right col, 0.8 inch down from text top:  replace "N-Channel" with "N-channel"   (9Dec03)

  p2.5, right col, 0.8 inch down from text top.   Replace JET with JFET.  (15 Jan 10)    

p2.6, left col, almost at bottom:   That current is 752 uA, not mA.  Also, base current is 19 uA, not mA. (24Feb03)  

p2.6, Eq 2.13.   There should be a minus sign ahead of this equation, for gm is a positive value and Vp is negative.   (8May07)

p2.6, JFET analysis, General comments:   The equations that describe JFET current contain the term Vsg.   This is the source voltage with respect to the gate, or Vs-Vg.       Fig 2.19 includes an equation that is called the "Basic FET equation."   This has a positive sign within the bracket.   If the equation had been written in terms of Vgs (gate voltage with respect to the source) there would be a negative sign.   The key points to keep in mind are that Vp is negative (for an N channel depletion mode JFET) and that Vgs=-Vsg.    Here's a summary of useful JFET equations.  This is clarification info.  It is not an errata.
 8May07    

p2.7, left col, 0.5 inch down from text top.   Change Vbe in the equation to be a simple Vb.  Either would work in the case of Fig 2.21A.    But Figures 2.21C and D are both models that include the bias current dependent emitter resistance re.    Fig 2.21B relates to biasing rather than signal amplification.  (6Aug04)  

p2.8, right col, 1.5 inches down from text top:  "effected" becomes "affected" (26Mar03)

p2.9, right col, 2.5 inches up from text bottom:  "role" becomes "roll" (24Feb03)

p2.9, Fig 2.28 caption:  "hybrid-p" should be "hybrid-pi" where "pi" is the Greek letter. (26Mar03)  

p2.11, first word on page:  "reasoning" becomes "reasoning"  without . italics (26Mar03) 

p2.15, Fig. 2.42:  Those are homebrew and surplus terminators rather than attenuators.  (24Feb03)

p2.15, middle column, 1.8 inches down from top of text:  change figure ref.  Should read "In Fig 2.40 we saw ...." (24Feb03)

p2.16, middle col, equation 2.30.    Replace Gamma with the absolute value of Gamma.   Hence

           (8feb04)    

p2.18, left col, 3.1 inches down from text top:  replace "effect" with "affect"  (9Dec03)

p2.20, middle col, 1.2 inches down from top of text:  "some of he" becomes "some of the" (24Feb03)

p2.21, col 1, 3.0 inches down from text top.    Replace "the earlier equation" with "equation 2.35"   (8Feb04)  

p2.21, right col, 1.9 inches up from text bottom:   replace "f1, f1, and f2" with "f1, f1 again, and f2"  where all of these numbers are subscripts.   Analytically, this means is that IMD order is the sum of the exponents in the related equations. (9Dec03)

p2.22, col 3, 3.4 inches down from text top.   Remove the word "nonlinear."   (12July03)

p2.23, col1, 2.0 inches down from text top.   Replace "is a bit stronger" with "has lower IMD"     (12July03)

p2.25, caption for Table 2.2:  should be "r=1.3 Ohms"  not "r=1.3 W" (24Feb03)

p2.27, middle col, 1.0 inch down from text top.   Replace sentence beginning with "This IC..."  It should become:  This IC should not be used without a dropping resistor."  (12July03)

p2.27, middle col, 1.6 inches down from text top.  Replace Greek Omega with "W" for watt.  (12July03)

p2.29,  Fig. 2.88.  The leaded capacitors have 0.1 inch leads, not 4 inch.   Also, the chip cap is a size 0805, not 0905. (24Feb03)

p2.30, top of left col:  replace "run" with "printed circuit run or wire" (24Feb03)

p2.31, Top of middle col.   Replace "have Q" with "have low Q".    (29Aug9)     

p2.33, middle col, 0.4 inches up from text bottom.  Change "diode purpose" to "diode's purpose."  (12July03)

p2.36, Fig 2.97 Caption.   Change the units for L1, L2, and L3 from mH to uH.    (While L1 and L2 are correct in the Third Printing, L3 is still shown as 15 mH.   It should be 15 microhenry.   (17April9)

p2.36, bottom of text and p2.37 text top:   The paragraph now reads:    "The amplifier is set up for Class-C operation, although it could be modified for class AB linear operation with little other change required.   Linear biasing is discussed below."  Change the paragraph to become   "The amplifier is set up for Class C operation.   It is easily modified for AB linear service with the methods outlined below."  (9Dec03)
 
p2.37.  Figure 2.100.   Alter the figure to include the 500 uF cap in A.   Change text in caption, changing mF to uF.  (That's microfarad, not millifarad.)  
 (12July03)  

  p2.37, right column, 3.7 inches down from text top:   replace "thermal communications" with "thermal contact"   (9Dec03)

  p2.37, right col, 3.8 inches down from text top:  Replace "Some designs us a ...." with "Some designs use a ....." (17April09) 

p2.39, right column, 0.9 inches up from text bottom:  replace "network the Beginner's" with "network for the Beginner's"  (9Dec03)

p2.40, Fig 2.105 caption, third line:  Change drain to collector.  (12July03)

p2.40, col 3, 0.4 inches up from text bottom.   Change p-network to pi-network.  (12July03)

p2.41, right column, 1.2 inches up from text bottom:  replace "This loss of no" with  "This loss is of no"   (9Dec03)