Silicon ChipTechno Talk - February 2021 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Subscriptions: PE Subscription
  4. Subscriptions: PicoLog Cloud
  5. Back Issues: PICOLOG
  6. Publisher's Letter
  7. Feature: The Fox Report by Barry Fox
  8. Feature: Techno Talk by Mark Nelson
  9. Feature: Net Work by Alan Winstanley
  10. Project: Remote Monitoring Station by Tim Blythman
  11. Project: Low-distortion DDS Signal Generator by Phil Prosser
  12. Project: INDOOR 'POOR AIR QUALITY' MONITOR by Geoff Graham
  13. Project: USB Logic Analysers by Jim Rowe
  14. Feature: AUDIO OUT
  15. Feature: Circuit Surgery by Ian Bell
  16. Feature: Make it with Micromite
  17. Feature: Practically Speaking by Jake Rothman
  18. Feature: Max’s Cool Beans by Max the Magnificent
  19. Feature: Electronic Building Blocks by Julian Edgar
  20. PCB Order Form
  21. Advertising Index

This is only a preview of the February 2021 issue of Practical Electronics.

You can view 0 of the 72 pages in the full issue.

Articles in this series:
  • (November 2020)
  • Techno Talk (December 2020)
  • Techno Talk (January 2021)
  • Techno Talk (February 2021)
  • Techno Talk (March 2021)
  • Techno Talk (April 2021)
  • Techno Talk (May 2021)
  • Techno Talk (June 2021)
  • Techno Talk (July 2021)
  • Techno Talk (August 2021)
  • Techno Talk (September 2021)
  • Techno Talk (October 2021)
  • Techno Talk (November 2021)
  • Techno Talk (December 2021)
  • Communing with nature (January 2022)
  • Should we be worried? (February 2022)
  • How resilient is your lifeline? (March 2022)
  • Go eco, get ethical! (April 2022)
  • From nano to bio (May 2022)
  • Positivity follows the gloom (June 2022)
  • Mixed menu (July 2022)
  • Time for a total rethink? (August 2022)
  • What’s in a name? (September 2022)
  • Forget leaves on the line! (October 2022)
  • Giant Boost for Batteries (December 2022)
  • Raudive Voices Revisited (January 2023)
  • A thousand words (February 2023)
  • It’s handover time (March 2023)
  • AI, Robots, Horticulture and Agriculture (April 2023)
  • Prophecy can be perplexing (May 2023)
  • Technology comes in different shapes and sizes (June 2023)
  • AI and robots – what could possibly go wrong? (July 2023)
  • How long until we’re all out of work? (August 2023)
  • We both have truths, are mine the same as yours? (September 2023)
  • Holy Spheres, Batman! (October 2023)
  • Where’s my pneumatic car? (November 2023)
  • Good grief! (December 2023)
  • Cheeky chiplets (January 2024)
  • Cheeky chiplets (February 2024)
  • The Wibbly-Wobbly World of Quantum (March 2024)
  • Techno Talk - Wait! What? Really? (April 2024)
  • Techno Talk - One step closer to a dystopian abyss? (May 2024)
  • Techno Talk - Program that! (June 2024)
  • Techno Talk (July 2024)
  • Techno Talk - That makes so much sense! (August 2024)
  • Techno Talk - I don’t want to be a Norbert... (September 2024)
  • Techno Talk - Sticking the landing (October 2024)
  • Techno Talk (November 2024)
  • Techno Talk (December 2024)
  • Techno Talk (January 2025)
  • Techno Talk (February 2025)
  • Techno Talk (March 2025)
  • Techno Talk (April 2025)
  • Techno Talk (May 2025)
  • Techno Talk (June 2025)
Dare we laugh about scams? Techno Talk Mark Nelson This month, we turn to online scams involving electronic gizmos. To PE readers, these scams are selfevidently fraudulent; they’re totally ludicrous and could never work as described. However, non-technical customers might easily take the scammers at their word – otherwise the fraudsters would not waste their time flogging their rubbish. If you get a kick from pseudo-scientific nonsense, just read on. D o you enjoy a good one-liner? My all-time favourite is ‘Start every day with a smile – and get it over with.’ I chuckle every time I hear it; and for this absolute gem we must thank the American actor and comedian WC Fields (1898–1946). Each of his witticisms was a cracker, such as my second favourite, ‘There’s no such thing as a tough child – if you parboil them first for seven hours, they always come out tender.’ That’s the darker side of his humour, and as we launch into the serious side of this article, here are just two more. ‘It’s morally wrong to allow a sucker to keep his money’, also ‘You can fool some of the people some of the time – and that’s enough to make a decent living.’ FUD and FOMO FUD is a combination of ‘fear, uncertainty and doubt’, while FOMO is a ‘fear of missing out’. Both are powerful motivators in marketing methods, to convince punters into spending money on PDPs (potentially dodgy products) that they don’t need. Here’s one to consider: the Blushield Tesla Cube (https://bit.ly/pe-feb21-bs). It’s not something you drop in the toilet cistern and at £480, it’s not as affordable as a blue brick for the WC. Described as an EMF Protection device, it’s an electronic gadget for home and office use that protects the human body against 5G radiation. As if simply shielding you against microwave radiation were not enough, it also claims to promote emotional stability and restful sleep, while it ‘may’ also reduce fatigue associated with EMF and increase your energy level. Helpfully, the write-up also advises: ‘Spring mattresses induce EMF through the coils and can even amplify EMF fields nearby such as wiring in walls. Get a latex or foam mattress and make sure your head is not near any electrical outlet or wiring near the wall.’ Smart meters are ‘extremely dangerous’, it continues. and Wi-Fi routers 10 and DECT cordless phones are ‘very dangerous’. I now realise how little my electronics education had taught me about how physics really works. Never again will I trust ‘experts’! But the people who sent in these, umm, remarkable testimonials (https://bit. ly/pe-feb21-more-bs) are adamant that their lives have been changed as well as having their wallets emptied. Blushield can even make your neighbours’ dogs less hostile, after all. All hail the Accelerator Frequency Generator Just as the coronavirus pandemic has stimulated research into multiple antiCOVID vaccines, several prophylactic measures have been devised for combatting 5G radiation. So, if Blushield is not your cup of tea, maybe you need an Accelerator Frequency Generator (AFG). Unlike the Blushield product mentioned above, the AFG Smart 5G Shield is not mains-powered, using instead its attached solar cell chip is the power source. This makes it much cheaper to buy ($39 from https://bit. ly/pe-feb21-different-bs – Amazon UK did sell it but has run out of stock). By the way, don’t be taken in by the mean-spirited customer reviews at https://bit.ly/pe-feb21-donotbuy; I am quite sure that Amazon would never sell a product that was ‘ineffective’, ‘pure snake oil’ and ‘possibly haunted’. But how does it work? By exploiting the effects of frequency acceleration, obviously. However, for reasons of commercial confidentiality, all the manufacturer is prepared to reveal for now is that the product is ‘infused with anti-radiation frequencies from the AFG that aids in protecting you from harmful RF radiation for one year’. The form factor is fortunately very modest: a one-inch round chip made of a crystalline carbon material with a strong adhesive back that adheres to any surface. It is designed to block harmful RF radiation from common sources such as 4G and 5G cellphones, tablets, laptops and all other electronic devices. The ultimate scam Perhaps the prize for the most notorious 5G scam product should go to the fabulous 5G BioShield. Despite being denounced by the City of London Police’s Action Fraud Squad and UK Trading Standards, it is still on sale, now reduced by 40% to £165 (https:// bit.ly/pe-feb21-home-of-bs). Unlike rival products, it employs a quantum nanolayer as a portable radiation balancing system to secure the ultimate protection for you, your family, and your home. It’s ingenious too. Without being plugged into a computer, the device actively protects the human body 24/7 within an 8m-diameter sphere, but when plugged into a power source, the sphere of active protection expands from the original 8m up to a massive 40m in diameter, protecting all in its field, both individuals and whole households. No larger than a USB stick, it can be carried on your person or placed near a mobile phone (or any other radiation-producing electrical device). The reason why this amazing device is no larger than a memory stick is down to the fact that it is, well, just an unenhanced memory stick worth about £5. Two scientific teardown tests have proved this. The last word goes to the splendid Jim Al-Khalili OBE FRS, professor of physics at the University of Surrey and presenter of BBC Radio’s The Life Scientific programme, who tweeted: ‘As a renowned world expert on quantum biology, quantum entanglement and relativistic time dilation, I can say, categorically, that if you spend £339 on a 5GBioShield then you’re an utter numpty.’ And finally… A quick follow-up to last month’s article about dodgy ‘deco’ lightbulbs. The editor helpfully reminds me that the CE symbol sometimes has a third meaning: caveat emptor. Thanks, Matt! Many thanks go also to fellow contributor Alan Winstanley for launching me on this journey of investigation. Practical Electronics | February | 2021