That up & down thing I completely missed and thus never properly understood transistors. Thank you for devoting a whole video to it. At least for me, it is very important.
A clear demonstration of what the linear region means. Effectively, you've built a simple curve tracer, but much easier to follow what's going on, than a traditional one. Are you going to show the current relationships (Ib vs Ic) as well as the voltage ones? (Vbe vs Vce). Keep up the good work.
For the base circuit I learned to pretend I am just lighting a LED (constant current.. or limiting resistor...) For the collector-emitter (thank to the transistor magics) your video applies. Thank you for your videos!!
I'd like to see you explaining this the exact same way but then for mosfets, I watched so many videos on this topic but nobody explains it as good as you do.
Malvino is a book that at a first glance looks good, but it is mostly confusing and incomplete. One of the best I had was Serra and Smith's Microelectronics. Although more complex, it brings you by the hand from simpler concepts...
@@IMSAIGuy i should have known you would like it. i have a friend and former cow orker whose first job after emigrating to usa was to test & verify all the example circuits in first edition AoE.
The way you explain this circuit, eg: hand-waving, you could just as easily have a relay instead of a transistor. Have you heard about transistor models? Simplest is a diode and current source.
Another great lecture. Thank you. I am curious if you have knowledge about the history of transistor construction. I mean the kind of knowledge you convey in your films, i.e. the technical and business real stories behind important products that we know today. Maybe you knew Mr. Shockley? :)
I worked with a fellow that was part of Shockley's lab here in silicon valley. He went on to be the CTO of the LED group of HP. I have stories of LEDs I might tell someday.
I wanted to recommend you an excellent book for beginners about the transistors Eugène Aisberg "Le Transistor?. Mais C'est Très Simple!" which I read at the age of six. But it turned out it never went in English. And the best book about the electronics of all time I know is “The Art of Electronics” Paul Horowitz, Winfield Hill.
Key thing with saturation is that saturation current is not determined by the transistor. In the resistively loaded collector case, it is determined by the collector resistance and the supply potential, here 1Kohm and 10V. This tells us ahead of time that the saturation current will be 10mA, minus a little for the saturation voltage. Saturation voltage is current dependent, and is usually specified on the data sheet at a particular current (or at several currents). For example: V_CE is specified at I_C=10mA and I_C=50mA for the 2N3904 (Fairchild data sheet, 2011) as 0.2V and 0.3V, respectively.
Yes. But, please, these videos are very basic and I will be avoiding math. It is a high level overview for beginners. My goal of the video was to teach basic concepts. Many people will never need to design circuits or calculate anything. I hope that when they hear the term 'saturation' they know that transistor is on all the way. and when they hear 'linear region' they remember the visual scope trace being a straight line. That's it , That's all. There is a need for this type of teaching because many will tune out as soon as you say V_CE at I_C and do math. Lots of other videos to do that stuff.
I think you should pay a little more attention to the measurements... The input voltage for saturation would probably be somewhere above 700 mV, not above 900 mV, as you read on the marker. If you had given the marker line below (in a correct position), it would probably have been above 700 mV. More attention to what is seen on the screen! (Min. 7:15) ua-cam.com/video/Eyrn2IShE90/v-deo.html
@@IMSAIGuy I made this correction because this video is dedicated to beginners. Thus, it is good for them to understand more clearly what they see when they look at an oscilloscope screen. You're doing a good job, anyway!
Great "realization" of what's seen in the texts. One of the best books I've found on explanation of amplification is "Troubleshooting, Servicing, And Theory of AM, FM, & FM Stereo Receivers" by Green and Bourque. I use it a great deal. A worthwhile addition to have in library. Thanks for the look.
Beginner here: great video, I learned lots!
That up & down thing I completely missed and thus never properly understood transistors. Thank you for devoting a whole video to it. At least for me, it is very important.
Definitely helped with my lack of transistor knowledge. Thanks for sharing. Look forward to the follow-ups.
A clear demonstration of what the linear region means. Effectively, you've built a simple curve tracer, but much easier to follow what's going on, than a traditional one. Are you going to show the current relationships (Ib vs Ic) as well as the voltage ones? (Vbe vs Vce). Keep up the good work.
I have a series on my curve tracer design and build: ua-cam.com/video/oFHTOQTIi30/v-deo.html
That was excellent.... one of the best explanations I've heard. I think it really helps that you start with a "really bad" amplifier too.
Very Impressive Explaination, Specially Visualisation of Linear region 👍
Loved this video. Thank you for making it.
Neat. I have very little knowledge of transistors. Looking forward to the next part.
I like this channel. Is very informative
For the base circuit I learned to pretend I am just lighting a LED (constant current.. or limiting resistor...) For the collector-emitter (thank to the transistor magics) your video applies.
Thank you for your videos!!
ISMAI Guy, thanks! Excellent video as usual!
I'd like to see you explaining this the exact same way but then for mosfets, I watched so many videos on this topic but nobody explains it as good as you do.
This was super useful, Thank you.
Awesome explanation! Thank you.
Best example of saturation
Malvino is a book that at a first glance looks good, but it is mostly confusing and incomplete. One of the best I had was Serra and Smith's Microelectronics. Although more complex, it brings you by the hand from simpler concepts...
Do you have The Art of Electronics by Horowitz and Hill?
ua-cam.com/video/OBNl-6nFyL0/v-deo.html
@@IMSAIGuy i should have known you would like it. i have a friend and former cow orker whose first job after emigrating to usa was to test & verify all the example circuits in first edition AoE.
wow, he must have learned so much
The way you explain this circuit, eg: hand-waving, you could just as easily have a relay instead of a transistor. Have you heard about transistor models? Simplest is a diode and current source.
Yeah, I have Malvino and I know what you mean. I bought mine off eBay about a year ago.
Another great lecture. Thank you. I am curious if you have knowledge about the history of transistor construction. I mean the kind of knowledge you convey in your films, i.e. the technical and business real stories behind important products that we know today. Maybe you knew Mr. Shockley? :)
I worked with a fellow that was part of Shockley's lab here in silicon valley. He went on to be the CTO of the LED group of HP. I have stories of LEDs I might tell someday.
I wanted to recommend you an excellent book for beginners about the transistors Eugène Aisberg "Le Transistor?. Mais C'est Très Simple!" which I read at the age of six. But it turned out it never went in English.
And the best book about the electronics of all time I know is “The Art of Electronics” Paul Horowitz, Winfield Hill.
archive.org/details/iltransistoreeunacosasemplicissima/mode/2up
Is the point where the yellow and blue line cross significant? Does it indicate the onset of the linear region?
no
@@IMSAIGuy dang.
It’s a sine to square wave converter!
a pretty poor square wave 😀
Key thing with saturation is that saturation current is not determined by the transistor. In the resistively loaded collector case, it is determined by the collector resistance and the supply potential, here 1Kohm and 10V. This tells us ahead of time that the saturation current will be 10mA, minus a little for the saturation voltage. Saturation voltage is current dependent, and is usually specified on the data sheet at a particular current (or at several currents). For example: V_CE is specified at I_C=10mA and I_C=50mA for the 2N3904 (Fairchild data sheet, 2011) as 0.2V and 0.3V, respectively.
Yes. But, please, these videos are very basic and I will be avoiding math. It is a high level overview for beginners. My goal of the video was to teach basic concepts. Many people will never need to design circuits or calculate anything. I hope that when they hear the term 'saturation' they know that transistor is on all the way. and when they hear 'linear region' they remember the visual scope trace being a straight line. That's it , That's all. There is a need for this type of teaching because many will tune out as soon as you say V_CE at I_C and do math. Lots of other videos to do that stuff.
I would have liked to see the transistor circuit before the oscilloscope explanation
the first two minutes show the circuit
@@IMSAIGuy Ah, sorry for the confusion, I meant the actual physical circuit, not the circuit diagram
really? it's only three parts.
@@IMSAIGuy but what was the source of the input?
@@dryster123 those came from a HP 33120a generator
I think you should pay a little more attention to the measurements... The input voltage for saturation would probably be somewhere above 700 mV, not above 900 mV, as you read on the marker. If you had given the marker line below (in a correct position), it would probably have been above 700 mV. More attention to what is seen on the screen! (Min. 7:15) ua-cam.com/video/Eyrn2IShE90/v-deo.html
you are right. I had made the measurement first before the video and when I did it the second time for video I didn't update the cursors
@@IMSAIGuy I made this correction because this video is dedicated to beginners. Thus, it is good for them to understand more clearly what they see when they look at an oscilloscope screen. You're doing a good job, anyway!
@@hflorin07 Thanks. My goal was to teach two things. saturation and linear region. I hope I did that.
Great "realization" of what's seen in the texts. One of the best books I've found on explanation of amplification is "Troubleshooting, Servicing, And Theory of AM, FM, & FM Stereo Receivers" by Green and Bourque. I use it a great deal. A worthwhile addition to have in library. Thanks for the look.
I just looked for that book, way too expensive sadly