Transistors 101 ep2: Current Sources

Illustrating the simplest transistor model - regulating the base-to-emitter voltage, and building current sources based on that model.
Schematics: github.com/ken...
TIMELINE:
00:11 Intro
00:35 Ignoring transistor models (for now)
02:27 The simplest transistor model
03:24 A simple current source
04:42 Saturation behaviour
06:18 An LED dimmer
07:17 Cutoff behaviour
08:11 Testing the LED dimmer
09:02 Recap - three operating regions: active, saturation, cutoff

[@josephjorgensen3282]

I am an electrician and starting a 4H group on electrical and I can say I appreciate all the free classes amazing people like you are willing to share with everybody thank you. I know that the kids will make leaps and bounds ahead of my understanding before I know it and I need all the info I can gather to help them.

[@KludgesFromKevinsCave]

Teaching kids is always great! Good to hear you're passing it on!

[@CircuitDuty101]

A good example of where a microcontroller can be substituted by the classic 555. Thanks for educating us!

[@arashyusefi1889]

Thanks 🙏👍💯😊

[@KludgesFromKevinsCave]

Always a pleasure! (I enjoy teaching!)

[@krakkus]

Great explanation! Love the graphic works also :) I try to learn as much as I can from different view points, so I can make circuits intuitively, and you help me a lot with that!

[@bleeghboy3997]

You are awesome! Keep it up you will help many people

[@bitlong4669]

Love way you explain things. Subbed!

[@electronicphilia1687]

Thank you sir

[@KludgesFromKevinsCave]

My pleasure. (I enjoy teaching!)

[@ultrasparc]

❤

[@theshadypersonify]

MORE I NEED MORE DAMNIT!!!!!

[@emanuelguadamuz3738]

Yeah! Give likes and subscribe to keep the knowledge...

[@KludgesFromKevinsCave]

Glad you found it helpful!

[@theshadypersonify]

BUT WHAT about micro controller power mosfet circuits?? to drive something between 12 and 20 volts powered by a 0-5A and 0-20V foot powered generator

[@KludgesFromKevinsCave]

I'll probably get into some power MOSFET circuits at some point, but I'm trying to cover the basics! (Never designed a regulator for a bicycle generator, sounds like an interesting project at some point...)

[@fransmurati2370]

Dont tell but show

[@KludgesFromKevinsCave]

I try to do both... build one actual example every time.