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Terry Mackenzie-hoy

Terry Mackenzie-hoy

Mackenzie-Hoy is a consulting acoustics and electrical engineer – machoy@iafrica.com

Working smarter

14th December 2018 As I become older, I regret that there are some inventions, electrical and otherwise, which will not be created in my life time. It would be a tragedy if I did not share the invention ideas with you in the hope that some young dynamo would take up the baton. Starting simple. Crying children are... 

Fusion reactors: Tokamak

7th December 2018 In 'nuclear fission', the nucleus of an atom breaks up into two lighter nuclei. Okay. I will say that again. You get some atoms which are heavier than others, right? Like lead is heavier than iron (that's why you get more for it at the scrapyard). So uranium is a heavy atom. If you fire a small... 

Killing the professions

30th November 2018 I am a qualified electrical engineer who holds a university degree and is registered as a professional engineer with the Engineering Council of South Africa (ECSA). I am a member of the South African Institute of Electrical Engineers. I have a consulting practice and we offer acoustics and... 

Redoubling Your Effort

23rd November 2018 The definition of 'fanaticism' is when you redouble your effort when your aim is forgotten. And in that world of climate change, that area of cosy illusions and comforting half truths, this has finally occurred. The climate believers think that carbon dioxide (CO2) is causing the world to heat... 

A small town in Germany

16th November 2018 "Come on, Terence, " said Harry, "don't you know about the Hannover Fair ?" "In Hannover, Germany?" I said. "Exactly," he answered. 

My Mini Budget speech

9th November 2018 I read an article that summed up the points made in the speech of our latest Finance Minister, Tito Mobweni. It is a document that is full of this new unit of currency, the 'bn'. Forgive me, I am guessing here but the bn has been created to save paper, I think. Well, not really.  Before, one... 

Electric healing

2nd November 2018 Many years ago, I had a conversation with a very nice physiotherapist.  The subject got onto electrotherapy, the curing of muscular aliments by the application of electricity. She explained to me that there were two types of current: galvanic and faradic. She explained that these had different... 

Potential issues with charging electric vehicles

26th October 2018 All the big automotive manufactures are making electric vehicles (EV). Why? I mean that, right now, internal combustion (IC) engines, gearboxes, drive systems, instrumentation . . . the whole lot . . . are pretty much sorted for the conventional cars (let us call them IC cars), so why retool for... 

Electric cars one more time

19th October 2018 Audi recently flighted a number of advertisements about its new all-electric car. This is due in 2019 and, if my job was to be an electrical reviewer, I might well go on from there, citing charge times, range, power performance and how to jump-start it if the battery is flat. But I am not going... 

The elephant in the room

12th October 2018 From Wikipedia: "The expression 'the elephant in the room' defines a situation which refers to a question, problem, solution or controversial issue which is obvious to everyone who knows about the situation, but which is deliberately ignored because to do otherwise would cause great embarrassment... 

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