How do Fluorescent lights work? calculation and P F Correction

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  • เผยแพร่เมื่อ 1 ก.พ. 2025

ความคิดเห็น • 45

  • @moaazkhalifa5522
    @moaazkhalifa5522 ปีที่แล้ว +9

    This video literally, saved me, did not get it untill this. Keep it up man subscribed

  • @rickiechristine
    @rickiechristine ปีที่แล้ว +2

    40 years in the field and needed a refresher to fix a light, your video was spot just what i needed.

  • @pault4793
    @pault4793 3 ปีที่แล้ว +8

    35 years in this game , still enjoy all the math side of things, trig etc , great video

    • @cestemshow
      @cestemshow  3 ปีที่แล้ว

      Yeah me too. Its actually relaxing nowadays to simply work out some triangles. 🤷‍♂️😂

    • @calholli
      @calholli 2 ปีที่แล้ว +1

      It's literally the fingerprints of god being left behind. That's how I see these math equations in everything. Many people try to separate religion and science-- but I tend to see it as evidence. lol

  • @andy0744
    @andy0744 3 ปีที่แล้ว +3

    I missed a day a college due to illness, I'm caught up now. Thank you Craig, much appreciated 👍

  • @electrician247
    @electrician247 3 ปีที่แล้ว +2

    Anothet stunning video. Awesome content Craig 🙌👏👏👏

    • @cestemshow
      @cestemshow  3 ปีที่แล้ว

      Thanks Mark. People are saying they can't follow it, what did you think?

  • @alejandrotrinchero4536
    @alejandrotrinchero4536 5 หลายเดือนก่อน

    Great explanation, very helpful for Electrician Phase 2 understanding. Thank you

  • @projectartichoke
    @projectartichoke 3 หลายเดือนก่อน

    I'm so accustomed to working with DC circuits that I often forget how versatile the relationships represented by Ohm's law really are for problem solving. Nice of the universe to make it so.

  • @akoamigo
    @akoamigo 3 ปีที่แล้ว +1

    Preparing for my exams , thanks alot, for your help

    • @cestemshow
      @cestemshow  3 ปีที่แล้ว

      Good luck!

    • @akoamigo
      @akoamigo 3 ปีที่แล้ว +1

      @@cestemshow thank you sir

  • @kalumprasannaHW
    @kalumprasannaHW 3 ปีที่แล้ว +2

    You did fantastic 🙏 please do a video on led bulb where real power and the current is only stated. ( I mean no power factor 🙏)

  • @ashleyelms5901
    @ashleyelms5901 3 ปีที่แล้ว +1

    Another great video mate good to see you got your hair back 😂👍

    • @cestemshow
      @cestemshow  3 ปีที่แล้ว

      Thanks Ash, it's shaved again now...... You can see the bald patch well on this vid 😂. You good mate?

    • @ashleyelms5901
      @ashleyelms5901 3 ปีที่แล้ว +1

      Yeah mate all good how you doing

  • @martinneave6484
    @martinneave6484 3 ปีที่แล้ว +3

    Hi Craig, I thought the starter was normally open then closes when the neon heats up within it. Then when the Ne cools the switch opens and causes the spike voltage. Are you saying its normally closed?

    • @cestemshow
      @cestemshow  3 ปีที่แล้ว +4

      its a simplified explanation. yes they start open, quickly close due to current flow causing electrodes to bed into each other, voltage shorts out to supply then cool and open again and allow now excited tube to receive full ballast voltage and strike..

  • @bimsarasandaruwan
    @bimsarasandaruwan ปีที่แล้ว

    thanks for this video, it is very helpfull for me to understand it

  • @johnlloydguzman9035
    @johnlloydguzman9035 ปีที่แล้ว +2

    Thank you for the knowledge ☺️

  • @furqanmuhammad2932
    @furqanmuhammad2932 4 หลายเดือนก่อน

    It's amazing except for the background music. Please please don't put background music in future videos... I love your content. Fabulous

  • @calholli
    @calholli 2 ปีที่แล้ว

    So is a ballast literally just a coil, or is it a transformer that steps up the voltage? Is there a way to test the voltages of a ballast? Or do I have to pull it all apart and ohm it for a short like everyone else shows in their videos. I came here just looking for the output voltage of a ballast. lol ... brought me back to my electronic days in vo-tech in 2000.. so I subbed

    • @cestemshow
      @cestemshow  2 ปีที่แล้ว +1

      Its just a coil. Never tried to measure the output voltages when striking? I will have a think and get back to you

  • @gbelectricks
    @gbelectricks 3 ปีที่แล้ว +1

    Nice one Craig, you made that look easy👍 I think I’ll have to give it another watch tomorrow🤣👊

    • @cestemshow
      @cestemshow  3 ปีที่แล้ว +1

      Yeah I played it to my students and they looked baffled..... Epic fail 😔. I thought I'd broke it down enough. I really like putting it all together because the text books rarely do that but I'm not sure anyone else cares 😂

    • @gbelectricks
      @gbelectricks 3 ปีที่แล้ว +1

      @@cestemshow I watched it back again earlier, and the penny dropped I think!!🤣 that’s the beauty of watching on a video, you can rewind it until you get it, all your videos are really appreciated, thanks 🙏

  • @michaelcostello6991
    @michaelcostello6991 ปีที่แล้ว +3

    How many fluorescent lights actually have a capacitor ? Where is it located in the light

    • @cestemshow
      @cestemshow  ปีที่แล้ว +2

      Most older ones. Modern ones have a hf unit all enclosed.
      If they have one they connect it across the supply terminals.

    • @georgedunham7311
      @georgedunham7311 5 หลายเดือนก่อน +1

      Most of them will. They’re usually connected across the Active and Neutral of the terminal block. Older capacitors will have what’s called PCB’s inside which is carcinogenic so be careful

  • @honestman276
    @honestman276 6 หลายเดือนก่อน

    Thanks from Bangladesh.

  • @TheJoypool
    @TheJoypool ปีที่แล้ว

    Just perfection

  • @steve-h7z
    @steve-h7z 8 หลายเดือนก่อน

    Would this work with an led light?

  • @claudiodominguez.
    @claudiodominguez. 9 หลายเดือนก่อน

    Hello, If I have to tap and or wiggle the bulbs for them to turn on, what's the problem ?

  • @4costindan
    @4costindan ปีที่แล้ว +1

    You are funny...I don't know if it was your intention 😅.

  • @Lo7q7le7guste7mrtf
    @Lo7q7le7guste7mrtf ปีที่แล้ว +1

    @18:38 btw you could have just multiplied by C capacitor value and divided by the 450 resistor value.
    Edit: seems like you did it on purpose so nvm

  • @geoeconomics5629
    @geoeconomics5629 ปีที่แล้ว +2

    AC RLC theory

  • @surajkulal692
    @surajkulal692 9 หลายเดือนก่อน

    Finally you used 7 nano instead of 7 micro. Why? I don't understand brother

    • @furqanmuhammad2932
      @furqanmuhammad2932 4 หลายเดือนก่อน

      He did not write N, he wrote U that's for micro

  • @calholli
    @calholli 2 ปีที่แล้ว

    It's a little silly to use A for amps and I for current on the same board.
    Pick one and stick to it. lol

    • @cestemshow
      @cestemshow  2 ปีที่แล้ว +1

      Difference between the symbol for current and the units measurements of current. Catches out most of my students at the start :-)

  • @marinvidovic763
    @marinvidovic763 ปีที่แล้ว +1

    Thenks to the "Made in CHINA" phylosofy.
    ... - we don't need to know anything - just go and by entire new unit and screw it onto the wall. Lol...
    I am just fixing bunch of thise thrown out. Freebies. Lol...
    Nice math lesson...
    Makes me thinking of Pitagoras from SAMOS.
    He created first comunist utopian colony... but that is for another video.

    • @geoeconomics5629
      @geoeconomics5629 ปีที่แล้ว

      Do you have a bank account in a community bank ?

  • @Lo7q7le7guste7mrtf
    @Lo7q7le7guste7mrtf ปีที่แล้ว +1

    Thank god we have LEDs.