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  1. TCSC47

    Inductance of motor

    Some apologies. I am trying to recollect my college stuff so if I get this wrong, I need somebody else here to put me right. A current flowing through a coil creates a magnetic field. If the current is changing, then there is a changing magnetic field generated across the coil generating it...
  2. TCSC47

    Inductance of motor

    I'm not an expert on induction motors but I have a Peak Atlas LCR40 that is excellent for measuring any R, L or C and it does it automatically. Cost about £100. Its main job for me is to help me identify surface mount components when I am constructing a printed circuit. It would measure the...
  3. TCSC47

    Anybody else watching the USA election results?

    Admonishment accepted and apologies to you. I have been in contact with my friends in the USA throughout the Trump era and I am well aware that the majority of your country thought very little of, as one described him, the "Orange Cockwomble" and that he did not win the popular vote. My comment...
  4. TCSC47

    Anybody else watching the USA election results?

    Well, welcome back to the world of grown-ups, America. You managed to get through the most embarrassing time of your political history. What on Earth were you thinking? The rest of the civilised world looked on in amazement.
  5. TCSC47

    COVID-19

    I had my vaccination (UK, Astrazenica - Oxford) day before yesterday. I will not be reducing my isolation precautions though. We have had two C-19 deaths in our extended family. One of our son's is presently in hospital but thankfully has turned a corner yesterday and has come off the forced...
  6. TCSC47

    Book Reviews

    Just to say, I have given this book to our local Oxfam second-hand book store since writing this review. It was just taking up space on my bookshelf.
  7. TCSC47

    Happy new 2021

    We have been watching all the Washington events over here in the UK and wish you all the best. My mate who lives in Sunny California (Lucky so and so!) said to me at the start of it all, that at least you will be able to get rid of the Orange Cockwomble after four years. We, unfortunately, are...
  8. TCSC47

    Happy new 2021

    And a belated Happy and Safe New Year from me.
  9. TCSC47

    Which pole is up?

    My Ozzy friends would agree with this, I'm sure!
  10. TCSC47

    Which pole is up?

    There is sometimes confusion for students starting to discuss magnets. The north pole of a permanent magnet is better termed the North seeking pole. So in reality what we normally call is the north pole of the magnet is the same polarity as the Earth's South Pole. I seem to remember an exam...
  11. TCSC47

    And now something weird

    Rockets and spacemen look how they are supposed too at last! Not sure abut the wellington boots though.
  12. TCSC47

    And now something weird

    So, does Musk get his design inspiration from 1950's comics?
  13. TCSC47

    wet feeling when using electric coat, how to remedy?

    Not quite the same thing but I have worn a pair of electrically heated gloves for skiing. Initially worked well but I quickly damaged them. When I pick up my skis, I have to grip across the sharp edges. For non skiers, there are strips of steel down the edges of the skis with the intended...
  14. TCSC47

    COVID-19

    Certainly zoom meetings with family have made a huge difference. Quiz night tomorrow in fact. My turn to give the questions. When the rules have allowed we have been able to meet up for outdoor activities, walking and cycling, but of course can not cuddle the grandchildren. Funny thing -- I was...
  15. TCSC47

    COVID-19

    Apologies for going off topic a bit more, this federal power of the USA is one of the things, all be it in a much watered down version, we in the UK have thrown away with our cursed and doomed Brexit. But more than the economic power, I am saddened that we have thrown away our friendship and...
  16. TCSC47

    What music do you like?

    Bringing the tone down a bit --- well, quite a lot actually, ---- we saw these guys at the Foxlowe in Leek (Staffordshire, England as we have non-UK posters here) a couple of years ago. Their name, "The Bar Steward Sons of Val Doonican" give the game away as to what to expect. If you ever get...
  17. TCSC47

    ECG amplifier stage running rail voltage

    Oh dear! I'm afraid you are attempting to do something that you should not. It is clear that you do not understand all the nuances required of your ECG application because you have come here to ask your question. I'm afraid it is a case of a little bit of knowledge is a dangerous thing. The...
  18. TCSC47

    What music do you like?

    And Rock On, Bernard Jewry, aka Shane Fenton, aka Alvin Stardust, sadly missed.
  19. TCSC47

    What music do you like?

    If one looks at Joe Meek's Wiki entry it tells of his mental illness which sadly resulted in his and his landlady's death. A sad loss of this pioneering person.
  20. TCSC47

    What music do you like?

    And possibly Joe Meeks biggest hit. From 1962, Telstar, to celebrate the launch of the first communications satellite between the UK and USA. I remember watching the commissioning and first link up of Telstar live on TV here in the UK. It took quite a bit of knob twiddling to get the thing...
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