Practical
Electronics
Volume 52. No. 11
November 2023
ISSN 2632 573X
Contents
Projects and Circuits
LC Meter Mk3 by Charles Kosina
18
This LC meter measures a wide range of capacitances and inductances, from less
than 1pF to more than 1.2nF, and from less than 100nH to more than 2.5mH.
DC Supply Filter for vehicles by John Clarke
This DC Supply Filter solves two big problems with 12V DC vehicle supplies: supply
noise messing with a device’s performance and voltage spikes possibly frying it.
25
PM (particulate matter) ‘Dust’ Sensors by Jim Rowe
30
In this last article on low-cost air quality sensors, we look more closely at particulate
matter (PM) sensors, also called ‘dust’ or ‘smoke’ sensors.
Anodising Aluminium at Home by Phil Prosser
36
Fancy turning your hand to anodising aluminium? As it turns out, as long as you take
due care (especially with the chemicals used), it isn’t that hard to do it yourself.
Series, Features and Columns
Techno Talk by Max The Magnificent
Where’s my pneumatic car?
8
Net Work by Alan Winstanley
10
Reports on energy-saving incentives for smart meter users, the ORA Funky Cat
BEV launches, some of Logitech’s mice are considered plus more space news.
The Fox Report by Barry Fox
Time is money
16
Max’s Cool Beans by Max The Magnificent
Arduino Bootcamp – Part 11
44
Circuit Surgery by Ian Bell
Gyrators Part 3 – Parametric Equaliser Circuits
50
Audio Out by Jake Rothman
Discrete audio op amp – Part 3
56
Electronic Building Blocks by Julian Edgar
Long-distance Remote Control
65
Regulars and Services
Made in the UK.
Written in Britain, Australia,
the US and Ireland.
Wireless for the Warrior
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Reader services – Editorial and Advertising Departments
Editorial
Upping your electronics housing game
Exclusive Microchip reader offer
Win a Microchip MPLAB PICkit 5
PE Teach-In 9
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Teach-In bundle – what a bargain!
Practical Electronics PCB Service
PCBs for Practical Electronics projects
Classified ads and Advertiser index
Next month! – highlights of our next issue of Practical Electronics
2
4
6
7
7
9
35
49
55
68
71
72
Read everywhere.
© Electron Publishing Limited 2023
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 December 2023 issue of Practical Electronics will be
published on Thursday, 2 November 2023 – see page 72.
Practical Electronics | November | 2023
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