- Outer Front Cover
- Contents
- Publisher's Letter: Ripping customers off through service & repair
- Feature: Computer Memory, Part 2
by Dr David Maddison
- Feature: Computer Memory Addendum
by Nicholas Vinen
- Project: Active Mains Soft Starter, Part 1
by John Clarke
- Subscriptions
- Project: Advanced Test Tweezers, Part 1
by Tim Blythman
- Feature: A 30mm Spark-Gap Tesla Coil
by Flavio Spedalieri
- PartShop
- Project: Active Subwoofer, Part 2
by Phil Prosser
- Product Showcase
- Feature: Heart Rate Sensor Module
by Jim Rowe
- Project: Noughts & Crosses, Part 2
by Dr Hugo Holden
- Serviceman's Log: Nature abhors a vacuum, and so do I
by Dave Thompson
- Vintage Radio: VE301Wn Dyn Volksemfanger
by Ian Batty
- Market Centre
- Advertising Index
- Notes & Errata: Bass Block Subwoofer, January 2021; High-Performance Active Subwoofer, December 2022
- Outer Back Cover
This is only a preview of the February 2023 issue of Silicon Chip.
You can view 36 of the 112 pages in the full issue, including the advertisments.
For full access, purchase the issue for $10.00 or subscribe for access to the latest issues.
Items relevant to "Active Mains Soft Starter, Part 1":
Articles in this series:
Items relevant to "Advanced Test Tweezers, Part 1":
Articles in this series:
Items relevant to "Active Subwoofer, Part 2":
Articles in this series:
Items relevant to "Heart Rate Sensor Module":
Articles in this series:
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El Cheapo Modules From Asia - Part 1 (October 2016)
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El Cheapo Modules From Asia - Part 1 (October 2016)
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El Cheapo Modules From Asia - Part 2 (December 2016)
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El Cheapo Modules From Asia - Part 2 (December 2016)
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El Cheapo Modules From Asia - Part 3 (January 2017)
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El Cheapo Modules From Asia - Part 3 (January 2017)
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El Cheapo Modules from Asia - Part 4 (February 2017)
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El Cheapo Modules from Asia - Part 4 (February 2017)
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El Cheapo Modules, Part 5: LCD module with I²C (March 2017)
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El Cheapo Modules, Part 5: LCD module with I²C (March 2017)
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El Cheapo Modules, Part 6: Direct Digital Synthesiser (April 2017)
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El Cheapo Modules, Part 6: Direct Digital Synthesiser (April 2017)
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El Cheapo Modules, Part 7: LED Matrix displays (June 2017)
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El Cheapo Modules, Part 7: LED Matrix displays (June 2017)
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El Cheapo Modules: Li-ion & LiPo Chargers (August 2017)
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El Cheapo Modules: Li-ion & LiPo Chargers (August 2017)
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El Cheapo modules Part 9: AD9850 DDS module (September 2017)
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El Cheapo modules Part 9: AD9850 DDS module (September 2017)
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El Cheapo Modules Part 10: GPS receivers (October 2017)
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El Cheapo Modules Part 10: GPS receivers (October 2017)
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El Cheapo Modules 11: Pressure/Temperature Sensors (December 2017)
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El Cheapo Modules 11: Pressure/Temperature Sensors (December 2017)
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El Cheapo Modules 12: 2.4GHz Wireless Data Modules (January 2018)
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El Cheapo Modules 12: 2.4GHz Wireless Data Modules (January 2018)
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El Cheapo Modules 13: sensing motion and moisture (February 2018)
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El Cheapo Modules 13: sensing motion and moisture (February 2018)
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El Cheapo Modules 14: Logarithmic RF Detector (March 2018)
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El Cheapo Modules 14: Logarithmic RF Detector (March 2018)
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El Cheapo Modules 16: 35-4400MHz frequency generator (May 2018)
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El Cheapo Modules 16: 35-4400MHz frequency generator (May 2018)
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El Cheapo Modules 17: 4GHz digital attenuator (June 2018)
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El Cheapo Modules 17: 4GHz digital attenuator (June 2018)
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El Cheapo: 500MHz frequency counter and preamp (July 2018)
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El Cheapo: 500MHz frequency counter and preamp (July 2018)
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El Cheapo modules Part 19 – Arduino NFC Shield (September 2018)
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El Cheapo modules Part 19 – Arduino NFC Shield (September 2018)
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El cheapo modules, part 20: two tiny compass modules (November 2018)
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El cheapo modules, part 20: two tiny compass modules (November 2018)
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El cheapo modules, part 21: stamp-sized audio player (December 2018)
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El cheapo modules, part 21: stamp-sized audio player (December 2018)
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El Cheapo Modules 22: Stepper Motor Drivers (February 2019)
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El Cheapo Modules 22: Stepper Motor Drivers (February 2019)
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El Cheapo Modules 23: Galvanic Skin Response (March 2019)
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El Cheapo Modules 23: Galvanic Skin Response (March 2019)
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El Cheapo Modules: Class D amplifier modules (May 2019)
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El Cheapo Modules: Class D amplifier modules (May 2019)
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El Cheapo Modules: Long Range (LoRa) Transceivers (June 2019)
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El Cheapo Modules: Long Range (LoRa) Transceivers (June 2019)
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El Cheapo Modules: AD584 Precision Voltage References (July 2019)
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El Cheapo Modules: AD584 Precision Voltage References (July 2019)
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Three I-O Expanders to give you more control! (November 2019)
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Three I-O Expanders to give you more control! (November 2019)
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El Cheapo modules: “Intelligent” 8x8 RGB LED Matrix (January 2020)
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El Cheapo modules: “Intelligent” 8x8 RGB LED Matrix (January 2020)
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El Cheapo modules: 8-channel USB Logic Analyser (February 2020)
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El Cheapo modules: 8-channel USB Logic Analyser (February 2020)
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New w-i-d-e-b-a-n-d RTL-SDR modules (May 2020)
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New w-i-d-e-b-a-n-d RTL-SDR modules (May 2020)
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New w-i-d-e-b-a-n-d RTL-SDR modules, Part 2 (June 2020)
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New w-i-d-e-b-a-n-d RTL-SDR modules, Part 2 (June 2020)
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El Cheapo Modules: Mini Digital Volt/Amp Panel Meters (December 2020)
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El Cheapo Modules: Mini Digital Volt/Amp Panel Meters (December 2020)
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El Cheapo Modules: Mini Digital AC Panel Meters (January 2021)
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El Cheapo Modules: Mini Digital AC Panel Meters (January 2021)
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El Cheapo Modules: LCR-T4 Digital Multi-Tester (February 2021)
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El Cheapo Modules: LCR-T4 Digital Multi-Tester (February 2021)
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El Cheapo Modules: USB-PD chargers (July 2021)
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El Cheapo Modules: USB-PD chargers (July 2021)
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El Cheapo Modules: USB-PD Triggers (August 2021)
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El Cheapo Modules: USB-PD Triggers (August 2021)
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El Cheapo Modules: 3.8GHz Digital Attenuator (October 2021)
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El Cheapo Modules: 3.8GHz Digital Attenuator (October 2021)
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El Cheapo Modules: 6GHz Digital Attenuator (November 2021)
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El Cheapo Modules: 6GHz Digital Attenuator (November 2021)
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El Cheapo Modules: 35MHz-4.4GHz Signal Generator (December 2021)
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El Cheapo Modules: 35MHz-4.4GHz Signal Generator (December 2021)
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El Cheapo Modules: LTDZ Spectrum Analyser (January 2022)
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El Cheapo Modules: LTDZ Spectrum Analyser (January 2022)
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Low-noise HF-UHF Amplifiers (February 2022)
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Low-noise HF-UHF Amplifiers (February 2022)
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A Gesture Recognition Module (March 2022)
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A Gesture Recognition Module (March 2022)
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Air Quality Sensors (May 2022)
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Air Quality Sensors (May 2022)
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MOS Air Quality Sensors (June 2022)
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MOS Air Quality Sensors (June 2022)
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PAS CO2 Air Quality Sensor (July 2022)
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PAS CO2 Air Quality Sensor (July 2022)
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Particulate Matter (PM) Sensors (November 2022)
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Particulate Matter (PM) Sensors (November 2022)
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Heart Rate Sensor Module (February 2023)
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Heart Rate Sensor Module (February 2023)
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UVM-30A UV Light Sensor (May 2023)
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UVM-30A UV Light Sensor (May 2023)
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VL6180X Rangefinding Module (July 2023)
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VL6180X Rangefinding Module (July 2023)
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pH Meter Module (September 2023)
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pH Meter Module (September 2023)
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1.3in Monochrome OLED Display (October 2023)
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1.3in Monochrome OLED Display (October 2023)
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16-bit precision 4-input ADC (November 2023)
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16-bit precision 4-input ADC (November 2023)
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1-24V USB Power Supply (October 2024)
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1-24V USB Power Supply (October 2024)
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14-segment, 4-digit LED Display Modules (November 2024)
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0.91-inch OLED Screen (November 2024)
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0.91-inch OLED Screen (November 2024)
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14-segment, 4-digit LED Display Modules (November 2024)
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The Quason VL6180X laser rangefinder module (January 2025)
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TCS230 Colour Sensor (January 2025)
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The Quason VL6180X laser rangefinder module (January 2025)
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TCS230 Colour Sensor (January 2025)
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Using Electronic Modules: 1-24V Adjustable USB Power Supply (February 2025)
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Using Electronic Modules: 1-24V Adjustable USB Power Supply (February 2025)
Items relevant to "Noughts & Crosses, Part 2":
Articles in this series:
Purchase a printed copy of this issue for $11.50.
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SILICON
SILIC
CHIP
www.siliconchip.com.au
Publisher/Editor
Nicholas Vinen
Technical Editor
John Clarke – B.E.(Elec.)
Technical Staff
Jim Rowe – B.A., B.Sc.
Bao Smith – B.Sc.
Tim Blythman – B.E., B.Sc.
Advertising Enquiries
(02) 9939 3295
adverts<at>siliconchip.com.au
Regular Contributors
Allan Linton-Smith
Dave Thompson
David Maddison – B.App.Sc. (Hons 1),
PhD, Grad.Dip.Entr.Innov.
Geoff Graham
Associate Professor Graham Parslow
Dr Hugo Holden – B.H.B, MB.ChB.,
FRANZCO
Ian Batty – M.Ed.
Phil Prosser – B.Sc., B.E.(Elec.)
Cartoonist
Louis Decrevel
loueee.com
Founding Editor (retired)
Leo Simpson – B.Bus., FAICD
Silicon Chip is published 12 times
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Printing and Distribution:
Editorial Viewpoint
Ripping customers off through
service & repair
We need legislation to deal with companies’ ongoing
assault on servicing and repairing mechanical or electronic devices. Luckily, in Australia, we have strong
consumer rights legislation. Despite this, greedy corporations are doing all they can to strip away anything
not covered by such legislation. The problems fall
under a few categories, including (but not limited to):
• No spare parts available for new products, despite the manufacturer
having enough parts to make more of the same product.
• Purposefully making products difficult to repair, for example, Onewheel electric skateboards that ‘brick’ themselves if the battery is swapped
or smartphones that refuse to work if a module is swapped from another
identical phone.
• Artificially limiting the lifespan of products; planned obsolescence is a
huge environmental problem.
• Restricting the availability of spare parts and tools.
• Limiting the availability of hardware or software required for diagnosis and repair.
• Refusing to release schematics and software, even for products that are
no longer supported.
• Overcharging for proprietary parts.
Australian legislation to deal with these assaults on consumers would be
a good start. The EU has a strong history of consumer protection, and if they
start taking action too, others might follow.
Why don’t we just boycott these companies? We should, but a minority
of consumers are aware of the situation. The average customer won’t realise
they’ve made a mistake until they are already out of pocket. Many competitors will use similar tactics, too, leaving us with few good choices.
While I can point at some particularly egregious examples of all the above
(and more), this anti-consumer behaviour is an industry-wide trend.
Legislation could be drafted to solve these problems without imposing
unreasonable burdens on manufacturers. It used to be standard to provide
after-sales support such as releasing schematics, making all parts available
and devices used to be designed to be repairable (now it’s often the opposite). Some possible solutions to the above points include:
• Pay customers compensation or give a full refund if spare parts cannot
be provided within a reasonable time frame for products still being sold.
• Legislate the availability of spare parts for a certain period after the warranty runs out.
• Disallow collusion between companies to prevent the original manufacturers from selling spares to those wishing to repair their devices. For
example Apple’s exclusivity deal with Intersil, see: siliconchip.au/link/abiy
• If a company stops offering spares, force them to release schematics,
CAD drawings and software so others can do so; after all, they’ve effectively
abandoned their product at that stage.
• Make it mandatory to release all documentation for repairs either when
manufacturer support stops, or some reasonable period after the product is
released (say, five years), whichever comes first.
• Penalties for companies caught charging excessively more for functionally equivalent parts.
I realise that a comprehensive legislative solution would be complicated,
but that is no reason to avoid trying. The biggest challenge is that the companies often spend large amounts of money to hire lobbyists (who aren’t always
truthful), to influence politicians to vote against such measures.
by Nicholas Vinen
24-26 Lilian Fowler Pl, Marrickville 2204
2
Silicon Chip
Australia's electronics magazine
siliconchip.com.au
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