Very interesting and informative thank you Professor. Greetings from the UK.

@sambenyaakov

3 жыл бұрын

Thanks David and best wishes.

Thanks for sharing, very useful device.

@sambenyaakov

3 жыл бұрын

Thanks for watching

Hi , thank you for sharing this value information. I have a question, can i simulate the work of a motor with this PTC? I mean .. when we start a motor it has a high current, because of low resistence and right after the indutance rise and lower the current, this PTC could do the same in function of temperature?

@sambenyaakov

Жыл бұрын

I doubt in amotor you need a reactive component.

Hi, question to the minute 4:58. Why switch which is below Vlink is opened? Thank you for answer

@sambenyaakov

3 жыл бұрын

Correct, Thank for your pointing this mistake.

Since the temperature raise is not instantaneous, as also shown in your nice analog circuit by the capacitor initially unloaded, a sudden inrush current will still be possible, at the start of the process. So the PTC really protects an already somehow robust circuit, able to sustain for a short period of time, a large current, right?

@sambenyaakov

3 жыл бұрын

Indeed

Hi, can you try make a video where mathematics is not the central ponint? Would really apreciate people getting understanding and feeling for electronics by just learning the mechanisms not the calculations.

@sambenyaakov

3 жыл бұрын

Thanks for comment. It would seem to me that my videos are highly intuitive yet accurate from the engineering aspect. The level of mathematics is basic, below that it will slip to story telling.

@uksuperrascal

3 жыл бұрын

Sam is a Prof. And can not understand how to educate to the layman, He expects every one to Know what he knows. Thinking, if you are that interested do the research, but saying it in a polite way, So for less mathematics KZread search NTC & PTC Thermistors - Lots of videos out there.

Would you say a PTC can be used as a fuse?

@sambenyaakov

3 жыл бұрын

Not Really since the résistance goes up. NTC might.

@NiHaoMike64

3 жыл бұрын

They're often called "self resetting fuses".

@akosbuzogany2752

3 жыл бұрын

Look for Multifuse or Polyfuse.

@snnwstt

3 жыл бұрын

@@NiHaoMike64 Right, as on PC-power supply, which can turn off in a case of a short, and come back to life, could I say, after cooling down.

@sambenyaakov

3 жыл бұрын

Yes, these are available but strictly speaking they are not just PTC but include a switch.