Electronics > Beginners
Discrete Regulated power supply
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Zero999:

--- Quote from: Cliff Matthews on June 07, 2018, 12:01:03 pm ---They posted an update with 2 series pass devices, but don't hunt for a 2.4v zener when TL431's are everywhere.
--- End quote ---
If you're going to use the TL431, you might as well connect the pass transistor in the feedback loop, so the IC is performing the regulation.


http://www.tij.co.jp/product/jp/TL431/datasheet/applications_and_implementation#SLVS5434039
schmitt trigger:

--- Quote from: Cliff Matthews on June 08, 2018, 12:05:56 am ---
BTW, "she" is only the voice of their English channel. FWIW, I have taken an interest in promoting good YT content, and have tried to help them out periodically with their literal translations. Eg: "power rails" she refers to as "shoulders"  :-DD

(Aunque los Rusos son como Cubano's agarrando cualquier recurso pa' inventar, son brutos (como yo) pa' charlar sobre el asunto)

--- End quote ---

If you want to have a good laugh, read some Chinglish translations. Or for that matter, some early Japanglish ones.

Your Spanish phrase is very good...including the slang use of pa' instead of para. However, Cubano's should go without the apostrophe: Cubanos.
HoracioDos:

--- Quote from: techguru on June 08, 2018, 05:15:59 am ---If any body is having discrete regulated power supply with variable current and voltage control, please share here. so that i will construct the one.
once again thank you.

--- End quote ---
Please keep us informed. As I don't have the knowledge to spot errors in schematics I would prefer to invest my time in circuits that work. I don't trust internet anymore.
schmitt trigger:
Since the circuit is so simple and all-discrete, you may want to give it a try on LTSpice, and read the .DC operating points.

Before actually building it.
HoracioDos:

--- Quote from: schmitt trigger on June 08, 2018, 06:09:52 pm ---Since the circuit is so simple and all-discrete, you may want to give it a try on LTSpice, and read the .DC operating points.
Before actually building it.

--- End quote ---
You are right  :-+.
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