What is a Voltage Regulator? How Does it Work? 

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I'm glad the videos were helpful. Thank you so much 😊

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LOL.... that's precious No, But seriously though, I've been doing electronics since i was like 6 years old, I'm 49 it's cool that you're into electronics and WE (The Old Generation of Electronics) APPRECIATE YOU AND YOUR INVOLVEMENT IN WHAT WE LOVE DOING and we appreciate you carrying it on . Now... if you want to know how to get started and you need a helping hand or a zoom chat or something explained, you let me know ok. I only require that you speak english if you want me to explain anything to you Beyond that i only require that you want to learn. let me know where you are in your experience, what equipment you have and what you are working on right now and i'll show you the path for the next few steps Whenever you are new, no doubt you are going to be confused and not know what to do WE ARE HERE TO HELP, don't worry about it. The Electronics community is cool YOU ASK, WE HELP.

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You might want to take a look into the data sheet of your specific chip's manufacturer, they often come with example diagrams regarding their implementation

Try it out on the breadboard

No, keep in mind the L78S05 aren't perfect clones of one another. For example Voltage Regulator A wants to produce 4,99 volts and B 5,01 volts. Because B will give out 5,01 volt A will turn off to bring it back down to 4,99V but B wont let it, if you got a load to it B will overheat since its doing the work for 2 and turn off after some time and A will take over until B is cooled down again. This will be a constant fight between these 2. There are some ways to avoid this but your better off purchasing a higher power one or a buck converter

You are right, ive searched up a datasheet and it also shows the negative side of the capacitor should be connected to the red wire in this case. If connected like this the capacitor will blow up.

no it wont blow up? negative of the capacitor is on negative terminal (black)

@@pain2737 Colour for output pin is wrong and if you measure output pin and negative rail, you get 0v because there is not much potential difference exist. That means you have to use 7905 output pin and original powersources positive lead. Dont let the colours fool you with this one. :)

sure

Did you get a reading with the power ON or OFF ? The readings you should get is.. Continuity - GND Pin to a Ground Source like a screw terminal on your PCB or heatsink, You should have continuity Should have no continuity from GND Pin to Pin 1 Should have no continuity From GND Pin to Pin 3 Resistance GND to a GND Reference on the board, should be Low Resistance, < 0.3 Ohms GND to Pin 1 - OL GND to Pin 3 - OL Volts DC Gnd Probe on a GND Reference Red probe on Pin 1 should read the input voltage Red Probe on Pin 3 should read the Output Voltage Red Probe on GND Pin should read 0V DC if you are getting continuity between all pins when Not energized You have an internal short Circuit in this case you would have either Lower voltage than expected of more likely , no voltage on the output

Thank you for your additional information.

Thank you for your contribution 🙏

As Elon would say.. just read the instructions.. with the absence of bypass caps the reg can give erratic voltages as it produces rubbish AC.. ie unstable. oscillations.

How it work

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7809

Thank you so much ☺️ Unfortunately, I don't have very detailed information about biomedical equipment. But if I can, I will share 👍

@@eeapplications Sir Its my pleasure to receive your message. We will be so glad if you kindly send me details with circuits diagram of a Electro surgical diathermy machine 400wats

@@AliReza-xk7if LOL.... WHY DON'T YOU GO FIND IT YOURSELF ? I mean, it's not like you're asking for the datasheet of a MOSFET or Relay 1. You're asking for a specialized piece of equipment 2. YOU HAVE NOT EVEN SUPPLIED A MODEL NUMBER 3. You just said ............. FIND IT !!! Now... Do you not think that's JUST A DAT Disrespectful Here are the largest suppliers of BioMedical Equipment McKesson Corporation. ... Medline Industries. ... AmerisourceBergen. ... Cardinal Health. ... Owens & Minor Inc. ... Henry Schein. ... Health Products For You. ... Axiom Medical Supplies. That Took me around 5 seconds to find Now... Call them all and find the equipment that you want and ASK THE MANUFACTURER FOR THE DATASHEET that's usually how you get these things

current limit i think

Made sense to me

It’s sufficient for an electronics newbie.

​@@mguerramdbarely

Hello. Yes, it will be as you say. I didn't give that detail because I showed the basic working logic. Thank you for your contribution.

the resistor is limiting the current - not dropping voltage. that is a common mistake

I thought the resistor was chosen to ensure the appropriate voltage across the led which as the previous comment states varies by LED. When calculating this resistance current is not considered.

Dramatic entrance and exit

Try using a linear voltage regulator for heat in your hut

Read a book.

I think we should provide an answer to Fiji Law, since he made a very logical question. Some of you keep insulting the asker without helping. Device housings are made under specific regulations, independend by device type, but by the power they consume. Power produces heat and it must be removed by some kind of cooler, so its practical to have the same housing for the same cooling needs. For details you can look for all type of housing (i.e. TO-220) and the Power they can handle.

Yes it could. But it may not be if the input voltage is regular.