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çok güzel,elinize sağlık👋✌

Actually i desoldered some mosfets from an old motherboard than after some time i realized i hit a jackpot fair child only manufactured 2000 of them

The pulse-by-pulse current limiter should also work if you put the current shunt at the primary side of a flyback or push-pull converter between the MOSFET sources and ground. But in this case you have to set the current according to the primary voltage, to limit the current at the secondary side. And you have to make sure to set the current twice as high because it starts from zero and goes to its maximum value. This needs to be twice as high as the average current you need at the primary side. You forgot to mention the feedback pin. It can (should) be used for compensation (f.i. by use of a 10 nF capacitor from the non-inverting voltage error amplifier pin to the feedback pin). You can also use to shut the controller down by connecting it to the reference pin (f.i. by use of an opto coupler). But you can also shut down the oscillator by connecting the CT pin to ground. For setting the output voltage to a voltage higher than the reference voltage you can connect the reference pin also directly to the inverting input of the error amplifier in order to save a voltage divider. So you only one voltage divider from output to ground.

Hi, I'm confused. 4.42 how can you do soft-start with a ratio of 1:10 without disturbing the dead time?

Why when I pass a wire through my current probe (a wire between L and the diode in a boost converter), do I get the same shape as if I were measuring the voltage at the switch node, but smaller (I dont get a triangular shape)?

Excellent presentation

Excellent explanation

Excellent explanation

thanks a lot

That chart to calculate the resonant frequency of a coil doesn't even come close! I put in the size and number of turns and it came up with 489 KHz but when I measure it I get 264!

SG 3525 ic

i like your username a lot.. very fun. thanks for the video. it seems you forgot about the feedback pin though TwT

Please could you show us how to do the resonant frequency for the primary. Thank you

I'd almost bet you were, are, or should be an instructor, because of your knowledgeable, very thorough explanation, I enjoyed it a lot. Thanks for actually taking the time to teach others.

If you see alot of one component, it's probably worth noting

What is pin 3 for?

Bizarre that +ve input is the feedback on both error amps! I have a love hate relationship. It is VERY STABLE, but the lack of push/pull outputs like in the SG3525 REALLY SUCKS!!!!!!!!!!!!!

very good video thanks

Very very VERY good content. Been on a 16 hour streak of building, capacitor desoldering, and resonant frequency calculations without online calculators; this just made my day my friend. Keep making content. Im working on an electromagnetic railgun design next, could always use a video on that LOL

Sir what about the feedback pin :/

This video is Gold! Thank you for taking the time to share your knowledge.

Great, clear and concise video. Thanks!

Clear, precise, comprehensive and complete. Perfect!

I teach three courses in electronics and one in electrical appliances. I always teach my students how to recover electronic material from discarded plates or thrown away, more than 90% of them are operational. Greetings from Mar del Plata. Arg

Отличная информация, всё наглядно и понятно.

Ten years ago, I threw away a complete, working, Jupiter Ace because I couldn't imagine anyone other than me wanting a Z80 computer with 3k of RAM from 1980. They are advertised for over £1000 now.

excellent

I had some PSU and LCd monitors pcbs lying around. And i was about to buy some optocouplers for a IoT project. Then I remembered the box with the parts and there it was, an ELI87 Ooptocouoler ready to enjoy a second chance in its life.

Thanks a lot 4:37 but this is not an LCD this is a VFD screen

Are there toroidal core that can work efficiently at 10GHz. I really need it😢

I have been doing this for many years. I build my own R/C equipment and repair antique equipment. I salvage lots of diodes as Bonner Digimites use a lot of them and they go bad a lot. I salvage motors and gears out old toys. I have gotten servo chips out of toys like teddy ruxpin.

I always salvage 78xx regulators !

very nice information in this video about all application of TL494 ic.

Thank you. I'm trying to increase the voltage and amps in this cheap dc boost board that keeps blowing up. So from what I understand, it should work just the same if I increase the ratings of the mosfet and diode.

Excellent explanation. Thank you. Great help.

Fantastic info , no BS just simple facts thanks for doing video , well deserved sub

Thank you so much

Perfect video. I was looking for info about TL594 but it looks like this chip uses basically the same principles, so this will prove immensely helpful.

At about timestamp 4:00 is the common connection of the resistors connected to the bottom of the capacitor? There is no connection dot there. THANKS FOR THIS VIDEO...my first look at the TL494... --daLE

I find wire is a good score. if yyou buy cheap Chinese flexable copper wire its often rubbish that wont soldier. Good pointers and advise.

Great vid! Like and sub

now where do you think we can sell desoldered electronic component 🦍

"only take what you need for what your working on or plan to in the future" so hoard. Thanks. Now my family can stfu!

Omg thanks for the video. I like salvaging big flat screens off Craigslist and the boards I don't use and never will I always wanted to scrap the good components but I'm just learning about tech and don't know what to take. I figured I'd just take them all but meh

thank you soooo much man you are great

only idiot use used elektrolytic capacitors

Save all parts! One day they could become very useful, when the borders with China close down. Since there are no electronic component factories left in the free world, building something with electronic components can become very difficult.

mercy bro

Very useful and clearly presented. Thanks

Hi there, any clues on the PIN3 ? thanks