Hi guys! Hope you've found this video useful in your learning journey. I'm planning to create more relevant content. Would be great if you could fill in this survey so that I know what direction I should take! Peace! ✌🏻 survey.qwary.com/f/AABlew?identifier=S_wSzSPnasH9Wc_FT15X0J1BuEcPl5gILyVTYFwsvWc=
Hi. Would you consider making video on "bootstrapped" Common Collector amplifier analysis? There are plenty of simple and neat analyses, but no so much of something more real and messy. I did one myself, but it would be nice to have someone to reference to or compare against. That's why I am very grateful for your video on CE amplifier with base-collector feedback, it was one of the few on the whole internet.
Hi there. Do you mean this: codevillagesolutions.gumlet.io/CC-Amplifier-with-Emitter-Resistor-andf-bootstrapped.png In the meantime, can you fill the survey so that I get a much better idea of what I should focus on: th-cam.com/users/redirect?event=comments&redir_token=QUFFLUhqa2JTaTVNbVJ4TDFDWjJSLUotLWZZSVZqSmlpQXxBQ3Jtc0tsS3lYTXpHeENGcHZvSTJrc1RYbUVuZHVwZGxiZ3BySG5VNEtzNHQ2QXhzcldpdk1rek5fOEI5N1hrbmVsUVFpR2I4YmVnMU5TZ1NZdkF6UEM0U2dpWUVqUUtCd21oNnVUV0dLLVVWRk5OT1BaV0xVTQ&q=https%3A%2F%2Fsurvey.qwary.com%2Ff%2FAABlew%3Fidentifier%3DS_wSzSPnasH9Wc_FT15X0J1BuEcPl5gILyVTYFwsvWc%3D
AS USUAL EXCELLENT LECTURE!MOST TEXTBOOKS SEEM TO INCLUDE THE INTERNAL RESESTANCE OF THE AC GENERATOR SOURCE.WHAT DOES THE Zo FORMULA LOOK LIKE IF YOU INCLUDED SOURCE RESESTANCE AND,WHY DID YOU NOT INCLUDE IT IN Zo FORMULA DERIVATION?
Thanks David. 😊 I'm going to assume that "internal resistance of the AC generator" is what most textbooks refer as r_o (internal resistance between the Collector and Emitter), and the "source resistance" is a series resistance to V_i, mostly indicated as R_i. For R_i, it's presence would create a voltage divider between itself and the parallel resistance R_B and Z_b, where V_i becomes the main source and V_(R_B||Z_b) (i.e. voltage across the parallel of R_B and Z_b), becomes the smaller voltage. If R_i is large compared to R_B||Z_b, then most of V_i will not appear across the input to the amplifier and you'll have a very poor amplifier. This is part of what we call impedance mismatch. The presence of R_i will affect the A_v and Z_i. For r_o, it's going to end up being parallel to R_E and therefore affect all 4 parameters. I don't include r_o to simplify the analysis since in most cases r_o tends to be more than 10 times larger than R_E. Hope that helps!
Hi guys! Hope you've found this video useful in your learning journey. I'm planning to create more relevant content. Would be great if you could fill in this survey so that I know what direction I should take! Peace! ✌🏻 survey.qwary.com/f/AABlew?identifier=S_wSzSPnasH9Wc_FT15X0J1BuEcPl5gILyVTYFwsvWc=
Hi. Would you consider making video on "bootstrapped" Common Collector amplifier analysis? There are plenty of simple and neat analyses, but no so much of something more real and messy. I did one myself, but it would be nice to have someone to reference to or compare against.
That's why I am very grateful for your video on CE amplifier with base-collector feedback, it was one of the few on the whole internet.
Hi there. Do you mean this: codevillagesolutions.gumlet.io/CC-Amplifier-with-Emitter-Resistor-andf-bootstrapped.png
In the meantime, can you fill the survey so that I get a much better idea of what I should focus on: th-cam.com/users/redirect?event=comments&redir_token=QUFFLUhqa2JTaTVNbVJ4TDFDWjJSLUotLWZZSVZqSmlpQXxBQ3Jtc0tsS3lYTXpHeENGcHZvSTJrc1RYbUVuZHVwZGxiZ3BySG5VNEtzNHQ2QXhzcldpdk1rek5fOEI5N1hrbmVsUVFpR2I4YmVnMU5TZ1NZdkF6UEM0U2dpWUVqUUtCd21oNnVUV0dLLVVWRk5OT1BaV0xVTQ&q=https%3A%2F%2Fsurvey.qwary.com%2Ff%2FAABlew%3Fidentifier%3DS_wSzSPnasH9Wc_FT15X0J1BuEcPl5gILyVTYFwsvWc%3D
AS USUAL EXCELLENT LECTURE!MOST TEXTBOOKS SEEM TO INCLUDE THE INTERNAL RESESTANCE OF THE AC GENERATOR SOURCE.WHAT DOES THE Zo FORMULA LOOK LIKE IF YOU INCLUDED SOURCE RESESTANCE AND,WHY DID YOU NOT INCLUDE IT IN Zo FORMULA DERIVATION?
Thanks David. 😊
I'm going to assume that "internal resistance of the AC generator" is what most textbooks refer as r_o (internal resistance between the Collector and Emitter), and the "source resistance" is a series resistance to V_i, mostly indicated as R_i.
For R_i, it's presence would create a voltage divider between itself and the parallel resistance R_B and Z_b, where V_i becomes the main source and V_(R_B||Z_b) (i.e. voltage across the parallel of R_B and Z_b), becomes the smaller voltage. If R_i is large compared to R_B||Z_b, then most of V_i will not appear across the input to the amplifier and you'll have a very poor amplifier. This is part of what we call impedance mismatch. The presence of R_i will affect the A_v and Z_i.
For r_o, it's going to end up being parallel to R_E and therefore affect all 4 parameters.
I don't include r_o to simplify the analysis since in most cases r_o tends to be more than 10 times larger than R_E.
Hope that helps!
THANK YOU!