Electronics Tutorial #1 – Electricity – Voltage, Current, Power, AC and DC

Author: admin  |  Category: Electronics

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Basic / beginners Electronics Tutorial / course / lesson – Voltage, Current, Power, AC and DC
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Nikola Tesla – http://en.wikipedia.org/wiki/Nikola_Tesla
Thomas Edison – http://en.wikipedia.org/wiki/Thomas_Edison

In this tutorial I cover the following:

* Some history about electricity / central power stations / electrification.
* Science of electron flow in a conductor / wire
* I use fluid dynamics in a pipe to explain voltage (pressure), current in Amps (flow) and consumption in Amp hours (rate of flow).
* We look at AC (alternating current) and DC (direct current) on the UNI-T UT81B scopemeter
* We look at how voltage / pressure is required to charge a 12 volt battery
* What is electricity? / How does electricity work?

Topics for future videos in this series:

* Ohms law, resistance, power, energy
* Electronic components – diodes, transistors, FETS, capacitors, digital logic gates, integrated circuits, 555 timer.
* Series and parallel circuits
* Op amps and feedback

Duration : 0:40:2


25 Responses to “Electronics Tutorial #1 – Electricity – Voltage, Current, Power, AC and DC”

  1. Rebecca Thornson Says:

    36:00 So it’s like …
    36:00 So it’s like when you’re blowing up a balloon; if you stop pushing
    the air into it nothing happens. However if you release the left over
    pressure in your mouth, the air goes backwards from the balloon: it tries
    to empty back into your mouth.

  2. osamah ajarmeh Says:

    if you interested …
    if you interested in electricity watch this video

  3. Rick Occulus Says:

    Just to add to your …
    Just to add to your point about the mains in the US, we primarily use
    110/120v but if you check your breaker box you’ll usually find that there
    are also a couple 220/240v circuits, denoted by the double-wide breaker.
    They are intended to be used as dedicated circuits for your electric
    stove, or washer/dryer etc.

  4. Simon Cummins Says:

    Brilliant, thanks …
    Brilliant, thanks for sharing this information!

  5. Joshua277456 Says:

    So voltage is the …
    So voltage is the amount of electrical pressure needed to push the current
    through a circuit, amperage is the flow rate (speed?) of the current
    flowing through the circuit, and wattage is the actual amount of energy
    (work)?

  6. osamah ajarmeh Says:

    very informative
    very informative

  7. Michael Gildersleeve Says:

    This is a very easy …
    This is a very easy to understand video. Thank you. Does anybody have a
    favorite forum for discussing electricity and electronics? I am trying to
    get into electronics, but first I’d like to go back to the beginning and
    understand how components were developed and how the whole electrical grid
    works.

    Thanks again for the well done video.

  8. Jimmy Gallagher Says:

    IEACNDC at 35 …
    IEACNDC at 35 seconds

  9. Zach Echo Says:

    Wow! Thanks so much …
    Wow! Thanks so much for all the knowledge!

  10. vmvlkc . Says:

    Long vid, but I …
    Long vid, but I learned a heck of a lot. Thanks!

  11. WhoWantsToKnow81 Says:

    “Add good value to …
    “Add good value to the series.”
    I see what you did there.

  12. ramases1 Says:

    Excellent tutorial
    Excellent tutorial

  13. Duane Elliott Says:

    I am a complete …
    I am a complete noob to this, do you have any suggestions on what
    materials/supplies I would need to begin learning. (Planning on becoming a
    mad scientist lol jk) 

  14. Paul C Says:

    AC current causes …
    AC current causes you to stick, DC throws you. I know from experience.
    With AC your muscles spasm back and forth at mains frequency and thus
    don’t move very far at all. With mains the power is enough to take 100% of
    your muscle ability away preventing you from pulling back. With DC the
    muscle reaction is in one direction and thus a lot of energy can be build
    up in the form of speed as you hurtle backwards across the room. Been
    there, thrown 6 feet by the pull up charge capacitor of a monitor. Been
    stuck to a mains plug the back fell off when I was pulling it.

  15. redicedragon Says:

    If AC power is …
    If AC power is pushed back and forth why does it need to be grounded? and
    how is the energy returned to the system when it is taken out down the
    line? I always thought that AC moved just like a current in one direction
    only with waves. This is the one thing I can not rap my brain around.

  16. Mihir Solanki Says:

    Thankyou for your …
    Thankyou for your video ..
    I am a person who likes theory more 🙂
    I am getting an arduino board so wanted to learn more about resistors n
    atuff
    Can you recomend some book that can help me more while watching this series
    of videos?
    Thankyou

  17. Upendra Kumar Says:

    great stuff
    great stuff

  18. frank villa Says:

    im going through …
    im going through these tutorial because i want to learn how to open up my
    dvd player without me being dead lol so can anyone tell me how to get rid
    of the electricity that remains in the device? thanks :)

  19. FroopmBrent Says:

    Helpful!
    Helpful!

  20. Jack Mallein Says:

    You know your stuff …
    You know your stuff! Honestly though, this video was making me sleepy…
    and I’m really interested in the topic. It’s just sooooo droning.

    Sorry mate. Had to move on.

  21. David Tao Says:

    Great video, …
    Great video, excellent analogies and examples!

  22. johnny45irish Says:

    Yes! You are South …
    Yes! You are South African! :)

  23. Mohammed Fayaz Says:

    Good stuff
    Good stuff

  24. Raffa Jaffa Says:

    thanx a lot for the …
    thanx a lot for the videos..i hope that they will keep coming 🙂 , maybe
    one of them you could make about simple synthesizers designs or what have
    you 🙂

  25. ldee247 Says:

    The essence of …
    The essence of electricity made easy to understand,thanks very much keep up
    with the good work that’s really helpful…nice video tutorials.

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