Basic Bipolar Junction Transistor Analysis: The Common-Collector Circuit (066b3)

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Electronics for the Inquisitive Experimenter

4 ай бұрын

As we continue this series on the Bipolar Junction Transistor, we take a close look at the Common-Collector configuration. In this video I will present the characteristics of this configuration and then walk through its analysis and design.
With design values in hand, I will go to the "junk box," pick out some components to put this together on the bench. But, these component values will not match the design values exactly.
I will have to reverse engineer the circuit to determine what emitter-to-ground voltage I should expect from my bench experiment.
While on the bench, I will swap out transistors to demonstrate the effects of the beta variations from transistor-to-transistor will have on the performance of the circuit.
=============== LINKS =================
LINK to the promised formula sheet:
drive.google.com/file/d/1KWz9...
=== VIDEO LINKS ===
Kirchhoff's Voltage Law
• Kirchhoff's Voltage La...
Basic Model for the Bipolar Junction Transistor
• Basic Bipolar Junction...
Links to all of the videos in this series are below the time markers.
=======================================
Time Markers for Your Convenience
----------------------------
00:05 Introductory Comments
02:33 We begin ...
02:45 The Circuit
02:50 It's Characteristics
03:19 Building the Circuit
06:21 Our Goals
06:45 The Analysis
06:47 The Emitter Circuit
09:46 The Base Circuit
13:54 The Bench Experiment
13:59 Gathering the Parts
14:42 Reverse Engineering our Circuit
14:51 The Base Circuit
20:19 The Emitter Circuit
21:40 The Bench Results
22:45 Swapping Transistors
23:51 Final Comments and Toodle-Oots
-----------------------------
==== This video Series ====
Video#1: Introduction to the Junction Diode (How PN junctions work)
• Introducing PN Junctio...
Video#2: Introduction to the Bipolar Junction Transistor (BJT)
• Introducing Bipolar Ju...
Video#3: Basic Bipolar Junction Transistor (BJT) Metrics for the Experimenter
• Basic Bipolar Junction...
Video #4 Basic Bipolar Junction Transistor Analysis: The Model
• Basic Bipolar Junction...
Video #5 Basic Bipolar Junction Transistor Analysis: The Common-Emitter Circuit
• Basic Bipolar Junction...
Video #6 Basic Bipolar Junction Transistor Analysis: The Common-Collector Circuit
• Basic Bipolar Junction...
Video #7 Basic Bipolar Junction Transistor Analysis: The Common-Base Circuit
• Basic Bipolar Junction...
Video #8 A Beta Stabilized Common-Emitter BJT Circuit: Analysis & Design
• A Beta-Stabilized, Com...
Video #9 A Beta Stabilized Common-Emitter BJT Circuit: Part Selection, Reverse Engineering and Bench Results
• A Beta-Stabilized, C-E...

Пікірлер: 21

@davidluther3955 21 күн бұрын

EXCELLENT PRESENTATION,WHEN I WAS IN COLLEGE WE NEVER HAD SUCH GIFTS.

@eie_for_you 20 күн бұрын

Thank you! 🙂

@user-em7lp1sb4k 4 ай бұрын

Ralph, I can't imagine the effort that goes into these videos you just keep pumping them out 👍I'm curious as to how far you will be going with this video series will you be talking about combined series capacitive or resistive coupled amplifiers, or push-pull designs etc? Impatiently waiting for the next video......

@eie_for_you 4 ай бұрын

Yes, they *do* take a bit of effort, but I love it! The initial plan brings me through to load lines, then jumping into difference amplifiers. But, I have been contemplating looking at multi-transistor amplifiers, too, because this introduces a whole bunch of other factors (e.g. loading factors of subsequent stages). We will see where it goes.🙂

@W1RMD 4 ай бұрын

Thanks for putting this all together for us. Take care.

@eie_for_you 4 ай бұрын

You are welcome! Glad you find them helpful! 🙂

@mikechester3398 4 ай бұрын

First time viewer, That was FUN. It's been awhile since I steped through those substitution equations to find the unknown. Yes, I did give Thumb Up and Subscribe Thank You.

@eie_for_you 4 ай бұрын

SO, I'm not the only one who finds this stuff FUN! 🙂 Thank you and you are welcome! More coming! 🤓

@ornithopterindia 4 ай бұрын

👍Thank you sir.

@eie_for_you 4 ай бұрын

You are very welcome! 🙂

@WECB640 4 ай бұрын

These OUTSTANDING videos should be required viewing and comprehension for all hams with an extra class ticket. Keep up the good work Ralph. 👍

@eie_for_you 4 ай бұрын

Thank you very much! Spread the word!🙂

@tomstrum6259 Ай бұрын

As a retired E technician I've had good luck repairing & building Dc,Af & Rf active transistor devices but never able to remotely grasp Kirchoff's, Thevenin & Norton bizarre Non-Intuitive network theories or "mesh" stuff....By 08:30 have an excruciating painful headache & had to bail out... I actually hate those guys for messing my electronics experience up.....

@eie_for_you Ай бұрын

Well, Tom ... I share your brain freeze on Thevenin and Norton equivalents. Makes no sense to me (and never did) ... but they work, oddly enough. Kirchhoff's, however, always made sense cuz the stuff has got to go somewhere. I do have videos on each of those if you are interested. Kirchhoff's Current: kzfaq.info/get/bejne/ftqiqtST3peUdHU.html Kirchhoff's Voltage: kzfaq.info/get/bejne/rNOJiNJ8rsXUZJc.html The black magic of Thevenin (yes, totally bizarre): kzfaq.info/get/bejne/ndGhaKeA3LaWhmQ.html Then Norton's: kzfaq.info/get/bejne/iJdjedKLyKjLm6s.html 🙂

@eie_for_you Ай бұрын

Ya know Tom, I was just thinking this morning ... as technicians we (yeah, I worked as one of those, too) we intuitively used the Kirchhoff's voltage and current laws. We just didn't put a name to what we were doing. I mean, we knew that if the power supply was 12 Volts and the voltage across the collector-emitter of a transistor was 5 volts (emitter grounded), then we just knew that the voltage across the collector resistor HAD to be 7 volts. This is Kirchhoff's Voltage law in real life. On the other hand ... Thevenin and Norton...ugh! Mysterious and weird, but it works. 🙂

@davidluther3955 23 күн бұрын

WOULD YOU GIVE A PRESENTATION OF A TRANSISTOR CASCODE CIRCUIT?

@eie_for_you 22 күн бұрын

I will have to add this to my requested video queue! It is an intriguing subject. just so you know...all caps give folks the impression that you are yelling ... std internet etiquette.🙂

@davidluther3955 22 күн бұрын

I USE CAPITAL LETTERS BECAUSE OF MY DRAFTING BACK GROUND AND,IT MAKES EASIER TO READ.

@eie_for_you 21 күн бұрын

@@davidluther3955 Understood. My father was a design draftsman ... the engineer's friend. 🙂

@davidluther3955 21 күн бұрын

I R@@eie_for_you

@davidluther3955 21 күн бұрын

IN TODAYS WORLD MOST DRAFTING IS WITH CAD@@eie_for_you