Practical
Electronics
Volume 50. No. 5
May 2021
ISSN 2632 573X
Contents
Projects and Circuits
7-Band Mono or Stereo Equaliser by John Clarke
These stereo or mono 7-Band Equalisers let you tailor the sound of your
listening experience. Both feature extremely low noise and distortion.
16
Touchscreen Car Altimeter by Peter Bennett
26
This Touchscreen Altimeter is optimised for car use or other land-based vehicle. The
hardware is vehicle-powered, and the software is designed for a typical driving trip.
I
older e ow ven with PI Control Part by Phil Prosser
hen e le t o last onth e d finished asse ling the
s and the hard are.
o it s ti e to ut it all together and get coo ing
Series, Features and Columns
The Fox Report by Barry Fox
te ie i .co ... r an yth or sca
8
Techno Talk by Mark Nelson
Groundhog Day?
10
Net Work by Alan Winstanley
his onth ho e use ca eras the current issions to ars ro
and others and the latest oney s inner ro e ay or e ay not you
12
a s Cool eans y ax The agnificent
lashing
s and drooling engineers
art
40
a e it with icromite y hil oyce
art
nternet connection ith an
PIC n
art
i i
odule
art
i by Mike Hibbett
evelo ent oard
Audio ut by Jake Rothman
icro hone rea lifier or ocoder
Written in Britain, Australia,
the US and Ireland.
Read everywhere.
© Electron Publishing Limited 2021
Copyright in all drawings, photographs, articles,
technical designs, software and intellectual property
published in Practical Electronics is fully protected,
and reproduction or imitation in whole or in part are
expressly forbidden.
The June 2021 issue of Practical Electronics will be
published on Thursday, 6 May 2021 – see page 72.
Practical Electronics | May | 2021
46
50
art
55
Circuit Surgery by Ian Bell
olving a circuit iteration load lines and si ulation
58
Practically Speaking by Jake Rothman
estoring old e ui ent
art
62
Wireless for the Warrior
u scri e to Practical Electronics and save money
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egulars and ervices
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