If you like this video don`t forget to press subscribe button, there will be a lot of interesting videos on the channel. Also, check out other videos: th-cam.com/play/PLMGMW_R30GaUp-TcFFFUrO0WZIecOV8kc.html
You are underrated, the knowledge you give is gold. Have a sub! Although i dont understand one part of the video, the importance of impedance. Low impedance capacitor supplies smooth current to load right? instead of spiked current with a high impedance one? Is impedance the only important factor when developping power distribution for logic circuits?
Thanks a lot :) Very pleased to hear. To answer your question. Lets say processor rapidly increases current consumption. In ideal world, capacitor would deliver this current to processor instantly. But in reality, impedance of the capacitor limits current that capacitor can instantly deliver, according to Ohms law. And if capacitor cannot deliver current - Instability occurs and processor is unhappy. And it works in other direction. For example, capacitor can deliver needed current for a processor, but because it is far away from a power source, power source cannot instantly charge capacitor and capacitor voltage drops. Processor is unhappy. Here where PCB design come in place to minimize length between capacitors and DC-DC converter and other things need to be taken into account. So, impedance of capacitors matter a lot. Indeed, this is one of the most important parameters for high frequency circuits. But it also matters how far you put them from processor, their nominal value, so they have enough energy to flatten the spikes etc.
@@NickElectronics Thank you for the reply! Another question(sorry i ask a lot of questions relating to electronics) when making a power supply circuit to power a project, (circuits like a buck boost or ac to dc converter with 4 diodes) there are capacitors present, for the ac to dc capacitors are used to smoothen the voltage for sensitive circuits. What leaves me puzzled is what capacitance should be used and how to find the capacitance needed for the circuit to work. How does capacitance of a capacitor effect a power supply effectiveness? I know that more capacitance means more stored energy but how does that influence the circuit?
@@Inti72600 After bridge rectifier in AC-DC (you call it 4 diodes) usually there is a bulky low ESR electrolytic capacitor to smooth sine wave to have semi DC voltage (not a perfect DC). After that, usually DC-DC converter follows which converts rectified and smoothed DC to a DC level you need with the control and the feedback, complex circuitry. At the output there is also a capacitor to smooth output voltage. All calculations are based on the voltage pulsations on the capacitor (output of power supply) required. The higher the value of the capacitor - the lower the pulsations. Capacitors have a +- 20% tolerance, so it is necessary to calculate values in a worst key scenario. To have required pulsations when -20% you have capacitance. Then it must be verified on practice. Simple example - if after bridge rectifier you put a low value capacitor and put a high load - you will see that voltage at your load is exactly sinusoidal. Capacitor is small and cannot accumulate enough energy to supply the load when sine wave crosses zero. But if you put one with high capacitance or lower the load, sine wave at the capacitor become smoothed and become DC with pulsations. If you want to learn electronics deep and understand everything its better to read a proper book for your needs. I have a plan to make a video about books to study electrical engineering.
@@Inti72600 if you are the beginner try The Art of Electronics Textbook by Paul Horowitz and Winfield Hill It covers a lot of staff. My recommendation would be to read parts of the book that looks most interesting for you and skip for now boring staff. You always can return to boring staff later when you need to. In this book you can find formula to calculate capacitor value for examples you asked:)
As soon as you showed the underside of the CPU I looked at an old one. There were in fact a dozen caps there; and some spaces for ones I assume would be used for faster chips in the same socket.
Electronics manufacturers do this pretty often. They make universal PCB and then just solder only part of the components and sell this board cheaper as you said. For more expensive ones they solder more components. It`s just a business)
While writing the script, I watched a lot of videos from other authors about caps, and I tried to fit the most important things into my video to keep it short and informative. The theory is the same everywhere. After all, this video is one of the first on this channel. First steps so to say. I was looking for my way :) Do not judge so hard. Anyway, a lot of time was invested in editing and voice acting. So i would't say that its a rip off.
@@NickElectronics don't take me too seriously. The fact you even replied says something as far as I'm concerned. Though your vid did seem to follow his quite close yours had a lot of updated visuals in comparison aswell as you each focused abit on separate aspects of the same topic.
If you like this video don`t forget to press subscribe button, there will be a lot of interesting videos on the channel. Also, check out other videos:
th-cam.com/play/PLMGMW_R30GaUp-TcFFFUrO0WZIecOV8kc.html
Now that i've come back more educated than before, this video is more understandable :D
Good )
Thanks for the best information
Happy to help!
This video is underated
Thanks for your explanation
You are welcome my friend :)
You are underrated, the knowledge you give is gold. Have a sub!
Although i dont understand one part of the video, the importance of impedance. Low impedance capacitor supplies smooth current to load right? instead of spiked current with a high impedance one?
Is impedance the only important factor when developping power distribution for logic circuits?
Thanks a lot :) Very pleased to hear.
To answer your question.
Lets say processor rapidly increases current consumption. In ideal world, capacitor would deliver this current to processor instantly. But in reality, impedance of the capacitor limits current that capacitor can instantly deliver, according to Ohms law. And if capacitor cannot deliver current - Instability occurs and processor is unhappy. And it works in other direction. For example, capacitor can deliver needed current for a processor, but because it is far away from a power source, power source cannot instantly charge capacitor and capacitor voltage drops. Processor is unhappy.
Here where PCB design come in place to minimize length between capacitors and DC-DC converter and other things need to be taken into account.
So, impedance of capacitors matter a lot. Indeed, this is one of the most important parameters for high frequency circuits. But it also matters how far you put them from processor, their nominal value, so they have enough energy to flatten the spikes etc.
@@NickElectronics Thank you for the reply!
Another question(sorry i ask a lot of questions relating to electronics) when making a power supply circuit to power a project,
(circuits like a buck boost or ac to dc converter with 4 diodes)
there are capacitors present, for the ac to dc capacitors are used to smoothen the voltage for sensitive circuits.
What leaves me puzzled is what capacitance should be used and how to find the capacitance needed for the circuit to work. How does capacitance of a capacitor effect a power supply effectiveness?
I know that more capacitance means more stored energy but how does that influence the circuit?
@@Inti72600 After bridge rectifier in AC-DC (you call it 4 diodes) usually there is a bulky low ESR electrolytic capacitor to smooth sine wave to have semi DC voltage (not a perfect DC). After that, usually DC-DC converter follows which converts rectified and smoothed DC to a DC level you need with the control and the feedback, complex circuitry. At the output there is also a capacitor to smooth output voltage. All calculations are based on the voltage pulsations on the capacitor (output of power supply) required. The higher the value of the capacitor - the lower the pulsations. Capacitors have a +- 20% tolerance, so it is necessary to calculate values in a worst key scenario. To have required pulsations when -20% you have capacitance. Then it must be verified on practice.
Simple example - if after bridge rectifier you put a low value capacitor and put a high load - you will see that voltage at your load is exactly sinusoidal. Capacitor is small and cannot accumulate enough energy to supply the load when sine wave crosses zero. But if you put one with high capacitance or lower the load, sine wave at the capacitor become smoothed and become DC with pulsations.
If you want to learn electronics deep and understand everything its better to read a proper book for your needs. I have a plan to make a video about books to study electrical engineering.
@@NickElectronics Okayy thanks again!!
I look forward to watching a video about that !
Do you recommend any electrical engineering books i could read?
@@Inti72600 if you are the beginner try
The Art of Electronics
Textbook by Paul Horowitz and Winfield Hill
It covers a lot of staff. My recommendation would be to read parts of the book that looks most interesting for you and skip for now boring staff. You always can return to boring staff later when you need to.
In this book you can find formula to calculate capacitor value for examples you asked:)
As soon as you showed the underside of the CPU I looked at an old one.
There were in fact a dozen caps there; and some spaces for ones I assume would be used for faster chips in the same socket.
Electronics manufacturers do this pretty often. They make universal PCB and then just solder only part of the components and sell this board cheaper as you said. For more expensive ones they solder more components. It`s just a business)
So nice thanks
You`re welcome :)
Dear Sir Tall ,
Please speak slow speed.
The voiceover needs to be improved.
Thank you for the video.
Thanks for your opinion, i`m doing my best. Glad you enjoyed it)
Is this not a rip off of affroteck mods video?
While writing the script, I watched a lot of videos from other authors about caps, and I tried to fit the most important things into my video to keep it short and informative. The theory is the same everywhere. After all, this video is one of the first on this channel. First steps so to say. I was looking for my way :) Do not judge so hard. Anyway, a lot of time was invested in editing and voice acting. So i would't say that its a rip off.
@@NickElectronics don't take me too seriously. The fact you even replied says something as far as I'm concerned. Though your vid did seem to follow his quite close yours had a lot of updated visuals in comparison aswell as you each focused abit on separate aspects of the same topic.
Is rhis a Joke