There's a lot here to unpack thanks for all the hard work for putting this subject together. Also the work sheets are really helpful as well. Really appreciate the hard work Ralph.
I have to agree. There is a LOT in there. I am so glad that you are finding these videos and the sheets that go with them helpful to you. They are blast to do. I print out a copy of the sheet for a design notebook I keep for my own reference as well. 🙂
Thanks for a thought-provoking analysis of this basic circuit. I did manage to remember Thevenin and Kirchoff's Laws which I first encountered 60 years ago at Technical College. An interesting exercise for people to try would be replacing your resistors with the nearest preferred values, either from the 12 values per decade (E12) or 24 values-per-decade (E24) series and compare the results with the basic C-E circuit.
You are very welcome! I always found the whole Thevenin thing weird. Kirchhoff's stuff makes sense, but Thevenin ...? You are right, once we get it "all figured out", we still have to get parts we can buy. Then comes the fun ... accommodating part tolerances! 🙂
Now you've jogged my memory, there was also the Norton equivalent constant-current generator, which was the one I found more difficult to understand. @@eie_for_you
You could also use a resistor base collector to stabilize the transistor. It was the way I knew before I learned how in school. Thanks for great videos.
WHY DID YOU NOT HAVE A PRESENTATION FOR THE AC WITH THE INPUT AND OUTPUT IIMPEDANCES AND GAIN FOR THESE TRANSISTOR CONFIGURATIONS?ONE TRANSISTOR CONFIGURATION THAT WOULD BE INTERESTING TO LEARN ABOUT IS COLLECTOR FEEDBACK.
This video is the *second* video in a two video pair on this subject. Video 1 (ua-cam.com/video/q-O8A5R1PV8/v-deo.html) was on analysis and design using the intended overall gain and input and output impedances to determine the ideal values required to meet the design criterion. This second video shows how to go about taking the actual resistance values that you are implementing the design with and determining what the circuit should actually act like based on those values. This, then, is followed by the bench experiment were we see how close we actually came to a real-world circuit in our calculations. Anything beyond these goals is out of the intended scope of either of these videos. 🙂
Many of my resistors are 1% resistors. Those folks who are used to the standard resistors values of the 5% and 10% variety (e.g. 27K, 33K, etc), these look pretty odd (and they are! Like 4.99K!?). Here is a great chart for you ... dazyweblabs.blogspot.com/2013/09/standard-resistor-value-chart.html 🙂
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
There's a lot here to unpack thanks for all the hard work for putting this subject together. Also the work sheets are really helpful as well.
Really appreciate the hard work Ralph.
I have to agree. There is a LOT in there. I am so glad that you are finding these videos and the sheets that go with them helpful to you. They are blast to do. I print out a copy of the sheet for a design notebook I keep for my own reference as well. 🙂
Thanks for a thought-provoking analysis of this basic circuit. I did manage to remember Thevenin and Kirchoff's Laws which I first encountered 60 years ago at Technical College. An interesting exercise for people to try would be replacing your resistors with the nearest preferred values, either from the 12 values per decade (E12) or 24 values-per-decade (E24) series and compare the results with the basic C-E circuit.
You are very welcome!
I always found the whole Thevenin thing weird. Kirchhoff's stuff makes sense, but Thevenin ...?
You are right, once we get it "all figured out", we still have to get parts we can buy. Then comes the fun ... accommodating part tolerances! 🙂
Now you've jogged my memory, there was also the Norton equivalent constant-current generator, which was the one I found more difficult to understand.
@@eie_for_you
You could also use a resistor base collector to stabilize the transistor. It was the way I knew before I learned how in school. Thanks for great videos.
Now that is interesting! I do not remember seeing that. Negative feedback. I'll have to do a simulation with that while I am on the road today. 🙂
I'm already looking forward to your next excellent endeavor(s)
As you have already seen ... it is there. Thanks! This is so much fun! 🙂
👍Thank you sir.
You are welcome! 🙂
WHY DID YOU NOT HAVE A PRESENTATION FOR THE AC WITH THE INPUT AND OUTPUT IIMPEDANCES AND GAIN FOR THESE TRANSISTOR CONFIGURATIONS?ONE TRANSISTOR CONFIGURATION THAT WOULD BE INTERESTING TO LEARN ABOUT IS COLLECTOR FEEDBACK.
This video is the *second* video in a two video pair on this subject. Video 1 (ua-cam.com/video/q-O8A5R1PV8/v-deo.html) was on analysis and design using the intended overall gain and input and output impedances to determine the ideal values required to meet the design criterion.
This second video shows how to go about taking the actual resistance values that you are implementing the design with and determining what the circuit should actually act like based on those values. This, then, is followed by the bench experiment were we see how close we actually came to a real-world circuit in our calculations.
Anything beyond these goals is out of the intended scope of either of these videos. 🙂
WHERE DID YOU GET THOSE RESISTOR NUMBER VALUES FROM YOUR JUNCK BOX?THEY DO NOT SEEM LIKE STANDARD VALUES.
Many of my resistors are 1% resistors. Those folks who are used to the standard resistors values of the 5% and 10% variety (e.g. 27K, 33K, etc), these look pretty odd (and they are! Like 4.99K!?).
Here is a great chart for you ... dazyweblabs.blogspot.com/2013/09/standard-resistor-value-chart.html
🙂
@@eie_for_youTHANK YOU!
@@davidluther3955 You are welcome! 🙂