Errata

Electronics Cookbook

Errata for Electronics Cookbook

Submit your own errata for this product.

The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".

The following errata were submitted by our customers and approved as valid errors by the author or editor.

Color key: Serious technical mistake Minor technical mistake Language or formatting error Typo Question Note Update

Version Location Description Submitted By Date submitted Date corrected
Other Digital Version
3.5
3.5

in Kindle, recipe 3.5 should be C total and not R total

Note from the Author or Editor:
In the equation at the bottom of page 37 in the printed book, The Formaula starts:

Rtotal = ..

change to:

Ctotal = ..

 Anonymous  Jun 15, 2017  Jul 21, 2017
Printed
Page 20
2nd equation

Vo = (270/(470+270))X5, not (470/(270+470))X5.

Note from the Author or Editor:
yup - fixed in Atlas

 Anonymous  Feb 18, 2018  Feb 28, 2020
Printed
Page 25
last paragraph

"The larger the AWG number the thicker the wire." Should read "The larger the AWG number the thinner the wire."

Note from the Author or Editor:
yup. fixed in atlas.

 Anonymous  Feb 19, 2018  Feb 28, 2020
Printed
Page 31
Figure 3-3 & 3-4

The battery polarity in the schematic (Figure 3-3 on page 31) is incorrectly drawn inverted. Physical component layout of schematic on page 31 and breadboarded circuit in figure 3-4 on page 32 do not match. As displayed the breadboarded version has the momentary pushbutton switch and resistor on the capacitor charge up side of the schematic in reverse order. The circuit will work but the breadboarded layout and schematic are inconsistent.

Note from the Author or Editor:
replacement image for Fig 3-3. File name F03_03.png provided.

 Anonymous  Jun 17, 2017  Jul 21, 2017
Printed
Page 33
1st paragraph 1st line.

Reference "to the square-shaped waveform" should be to Figure 3.5, not Figure 3.6, which is a photograph of capacitors on the following page.

Note from the Author or Editor:
Reference "to the square-shaped waveform" should be to Figure 3.5, not Figure 3.6

 Anonymous  Jun 17, 2017  Jul 21, 2017
Printed
Page 38
3rd paragraph under Discussion heading

"...so for higher capacity use, the capacitors can be placed in series" should read "in parallel" instead. Capacitance adds up in parallel not series.

Note from the Author or Editor:
Third para of Discussion section, change:

"for higher capacity use"

to

"for higher voltage use"

 Anonymous  Jun 17, 2017  Jul 21, 2017
Printed
Page 43
1st paragraph

"smoother" should read "smooth."

Note from the Author or Editor:
"smoother" should read "smooth."

 Anonymous  Jun 17, 2017  Jul 21, 2017
Printed
Page 57
Figure 5-2 and paragraph below

Battery symbol in schematic is depicted upside down. Circuit will not work if breadboarded in that manner as the polarity is inverted. In the description provided in the last paragraph a reference to a 0.5 volt base to emitter voltage drop is referenced but a value of 0.6 volts is used in the equation below it. Need to be consistent when using number values.

This text is interesting but poorly edited and as a result I may return it. I certainly would not recommend it to someone new in electronics without corrections being made by the publisher.

Note from the Author or Editor:
replacement image for fig 5-2. File name F05_02.png

ALSO, last para of page 57 - change "ignoring the 0.5V" to "ignoring the 0.6V"

 Anonymous  Jun 17, 2017  Jul 21, 2017
Printed
Page 59
Figure 5-4

Battery in schematic drawn upside down. Circuit will not work if breadboarded in this manner.

Note from the Author or Editor:
Replacement image for Fig 5-4.

file name F05_04.png

 Anonymous  Jun 17, 2017  Jul 21, 2017
Printed
Page 62
Figure 5-7

Schematic displays battery incorrectly with polarity inverted. If breadboarded in this manner the circuit will not work.

Note from the Author or Editor:
replacement image for Fig 5-7 provided. File F05_07.png

 Anonymous  Jun 17, 2017  Jul 21, 2017
Printed
Page 77
Last line.

On page 77 "Figure 4-6 shows..." should read Figure 6-4 shows..." when referencing Figure 6-4 on the next page (page 78).

Note from the Author or Editor:
On page 77 "Figure 4-6 shows..." should read Figure 6-4 shows..."

 Anonymous  Jun 23, 2017  Jul 21, 2017
Printed
Page 89
Formula at bottom of page

Formula for Vout uses value for R2 (2000) inconsistent with description in circuit (1000)

Note from the Author or Editor:
Last but one paragraph, change:
".. is a 1kΩ pot"

to be:

".. is a 2kΩ pot"

 Anonymous  May 16, 2017  Jul 21, 2017
Printed
Page 104
Figure 7-22

LED1 in schematic is drawn reversed. As depicted LED1 will not be forward biased as described in the 2nd paragraph of page 105.

Note from the Author or Editor:
The figure needs to be replaced. I have a revised diagram with the battery flipped.

 Anonymous  Jul 01, 2017  Jul 21, 2017
Printed
Page 126
Equations for Psolar

Psolar equations are incorrect. Should be E / H x 60 x 60.
Therefore 30,240/10 x 60 x 60 = 0.84 W.

Incorrectly listed as Psolar = E / H x 24 x 24 x 60 in two places on page.

Note from the Author or Editor:
There are two equations on page 126. Both start:

Psolar = E / H x 24 x 24 x 60

Both should actually start:

Psolar = E / H x 60 x 60

 Anonymous  Jul 02, 2017  Jul 21, 2017
Printed
Page 138
1st paragraph

Word "experimented" is misspelled as "experiemented."

Note from the Author or Editor:
Word "experimented" is misspelled as "experiemented." Page 138 first paragraph.

 Anonymous  Jul 03, 2017  Jul 21, 2017
Printed
Page 155
Solution code paragraph

Arduino sketch in book is missing int inputPin = A0; definition prior to void setup() function.

Note from the Author or Editor:
In the code at the bottom of page 155, before the line starting "void ..." insert the following new line of code:

const int inputPin A0;

 Anonymous  Jul 04, 2017  Jul 21, 2017
Printed
Page 176
schematic at top

The P-channel MOSFET in the schematic is upside-down. Its source should be connected to Vcc, not its drain. The circuit would be improved by adding a resistor between Vcc and the MOSFET gate to hold it high (off) when the GPIO is low and the transistor not conducting.

Note from the Author or Editor:
yup - fixed in Atlas with replacement fig.

 Anonymous  Sep 10, 2017  Feb 28, 2020
Printed
Page 184
3rd paragraph

3rd paragraph 4th line down should read "...,you should put a small delay in between settings to PREVENT A and B FROM BEING high at the same time."

Based on information presented at the start of the same paragraph. Thanks.

Note from the Author or Editor:
fixed in Atlas

 Anonymous  Aug 31, 2017  Feb 28, 2020
Printed
Page 235
Top of age

Delete duplicate "void setup() {" at the beginning of Arduino example code.

Note from the Author or Editor:
yup - fixed in atlas

 Anonymous  Sep 02, 2017  Feb 28, 2020
Printed, PDF, Other Digital Version
Page 258
near bottom of source code

You use the term "7-seg" in the code and in the description on next page. Where is this variable or constant defined? Or, is it a reserved word in Arduino C? And if it is defined in the Arduino environment, where is it defined? I did not see any #include statements.

Note from the Author or Editor:
needed clarification

 Anonymous  Apr 23, 2019  Feb 20, 2020
Printed
Page 283
Discussion section, 2nd paragraph

The reference to 74HC4001 may be a typo. Could locate no such part number.

Would suggest changing last sentence in paragraph to read as follows: "For instance, the 7400 and 4011 of old can now be substituted with the modern 74HC00."

Both of these part numbers are Quad 2 Input NAND Gates.

Note from the Author or Editor:
yup fixed in Atlas

 Anonymous  Sep 04, 2017  Feb 28, 2020
Printed
Page 340
18-3

Hi: I've enjoyed the book a lot, so don't take this as a troll. But I think the circuit in project 18.3 has a problem. I would appreciate any feedback you have on this.

I can't recall ever seeing a circuit that depends on an op amp input to charge a relatively large electrolytic capacitor. In fact, the "ideal" behavior of an op amp is to assume that there is no current flowing into the +/- input terminals of an op amp at all.

i used this circuit in radio I was building and I noticed that the microphone didn't work properly for a minute or so after powering up. I suspect that this might be caused by the fact that the 10uF cap needs to charge to the difference in DC bias between the electret capsule and the bias network on the inverting input.

The reason for capacitor C1 is well understood - it needs to be there. But I think there needs to be a more effective way of setting up the offset voltage needed to center the output between the power rails.

Have you used this circuit successfully in production?

Many thanks,

Bruce MacKinnon KC1FSZ

Note from the Author or Editor:
Fixed in atlas with a replacement schematic.

 Anonymous  Apr 23, 2019  Feb 28, 2020
Printed
Page 368
Figure 20-4 schematic

Capacitor C2 is depicted in the circuit backwards. Since electrolytic capacitors are being used, the polarity ought to be inverted so the anode of C2 is in contact with resistor R4. Would also recommend moving LED1 to the collector side of transistor Q2, although it will work in the location depicted. Thank you.

Note from the Author or Editor:
fixed in atlas with replacement figure

 Anonymous  Oct 21, 2017  Feb 28, 2020