This is an interesting article about how mobile phones and other devices use the wireless charging system called Qi. New chips developed allow up to 50 W of power transfer and have safety circuits to prevent overheating foreign objects that might come between the energy source and the load.
This article focuses on improving processor power efficiency by a process of heterogeneous multicore design that switches off transistors that are not being used, and assigining individual specialised cores of a multicore processor to work at specific kinds of tasks so the unneeded functions at any specific time can be switched off so they aren’t using power.
Cerebras Systems unveils the industry’s first trillion transistor chip
The Cerebras Wafer Scale Engine, the largest chip ever built, transforms the artificial intelligence landscape with unprecedented compute density.
400,000 cores, and 18 GB on chip, low power, super fast data, optimized for AI.
Measuring human exposure to 5G:
“IEC TC 106 is playing a key role with the recent publication of a new IEC Technical Report on evaluating human exposure to radio frequency fields in the vicinity of base stations…
IEC 62232 provides methods for determining the radio-frequency field strength near radio-communication base stations with the intention of evaluating human exposure. It takes into account the mmWave frequencies to be used for 5G networks.”
The new EESS website now stands alone to support regulatory activities across multiple states. The safety of household electrical equipment in Queensland, Victoria, Western Australia and Tasmania is regulated using the Electrical Equipment Safety System (EESS), which now has a new online presence at: http://www.EESS.gov.au.
EESS.gov.au removes functions previously found on the Electrical Regulatory Authorities Council (ERAC) website and presents them with enhanced and improved layout and structure, based on feedback from industry.
UPDATE NOTE: This is an older recall, going back to 2016. If you have already participated in the recall then further action is not necessary.
“Apple has determined that, in very rare cases, the two prong Apple AC wall plug adapters designed for use in Continental Europe, Australia, New Zealand, Korea, Argentina and Brazil may break and create a risk of electrical shock if touched. These wall plug adapters shipped from 2003 to 2015 with Mac and certain iOS devices, and were also included in the Apple World Travel Adapter Kit.”
“This recall covers the two prong plug portion of the Apple AC power supply (wall plug adapters) designed for use in Continental Europe, Australia, New Zealand, Argentina, South Korea and Brazil.”
- Source 3: https://www.afr.com/technology/why-you-must-not-ignore-apple-power-adapter-recall-and-know-your-rights-20160205-gmn6be
“Apple’s website advises that in very rare cases, the two prong wall plugs designed for continental Europe, Australia, New Zealand, Korea, Argentina and Brazil can break and create a shock hazard. So the company will exchange the part at no charge. “
The new program confirms which home battery products have been tested against the industry’s best practice guidelines… Products that qualify for the Battery Assurance Program … have been independently tested to confirm they are up to the necessary electrical safety and quality standards.
(Letter to the Sydney Morning Herald, March 20th, 1890, about the electrification of Sydney’s street-lighting, replacing gas, and the electrification of the steam-tram network. Post borrowed from the Old Sydney Album in Facebook)..
IF ORDINARY PRECAUTIONS ARE TAKEN THERE IS INFINITELY LESS DANGER IN THE USE OF ELECTRICITY THAN IN THAT OF GAS.
During the past decade (1880-90) there were in the whole of Europe only 13 deaths occasioned by electricity.
The city of Sydney,with a population of less than the 1000th part of that of Europe, can furnish a much heavier record of mortality against gas, and yet people have long ago ceased to complain of the danger attaching to the use of the latter agent.
There are far more deaths attributable to the careless use of “Rough On Rats” and many other household poisons, than to electricity.
No less than 300 persons were injured and 135 killed by the explosion of a cartridge factory at Antwerp last September, and 13 women were killed by the collapse of a carpet factory at Glasgow last November, whilst nearer home, and still more recently, about 150 lost their lives in the ill-fated SS QUETTA – still no one suggests dispensing with cartridge and carpet factories and mail steamers.
Every week has something to record in the way of boiler explosions, killing in the majority of cases over a dozen persons; gas explosions are items of every-day occurrence, yet the cranks who become furious at the bare mention of an electrical accident hardly think such mishaps worthy of mention.
During the year ending December 31, 1888, out of a total of 1258 deaths by accident in New York, electricity gave only 6, versus illuminating gas 32, kerosene 17, and drowning 173 – this alone should suffice to show that electricity is, relatively speaking, safe, and the testimony may be considered of especial value, coming from New York, where nearly every street, shop, and store of importance, and a very large number of public buildings and private dwellings, are lit by electricity, whilst a large number also of factories and workshops and tramway systems are supplied with power by the same agent”.
Wilfred J. Spruson
(photo from City of Sydney Archives shows electric tram, electric arc-lamp and telephone wires in Redfern St Redfern, c.1909.)
Consumers are set to benefit from improved safety standards in the gas and electrical goods industry when amended regulations commence on 1 September 2018.
The Act will provide multiple benefits, including:
- Implementing a consistent compliance and enforcement regime for both gas and electricity energy sources;
- Authorising NSW Fair Trading officers to seize or remove any unsafe gas appliance where an offence has been committed or the appliance is unsafe;
- Aligning the maximum penalties for offences relating to gas safety with those relating to electricity safety; and, most importantly,
- Addressing deficiencies in the current gas consumer safety provisions to better provide consumers and the NSW public.
Dr Quach says that unlike ordinary batteries, which take the same amount of time to charge no matter how many you have, the theory is that quantum batteries would charge faster the more you have of them.
“If one quantum battery takes one hour to charge, then two would take 30 minutes, three would take 20 minutes, and so on. If you had 10,000 batteries, they would all charge in less than a second,” he said.