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 interesting video and very well explained! But I have a question. I've been trying to understand how choke filters work for a long time. I know for example, and I also heard this in your video, that the higher the frequency, the greater the losses in the iron transformer. Doesn't that mean that the best filter for high frequencies would be iron? Why is ferrite used? Isn't this used in transformers such as flyback, or medium wave radio precisely because it doesn't block high frequencies? I don't understand this...

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

Ty Englishman.

I have a question for you sir i have many car amps and power bricks but dont always fix them as my knowledge is quite small compared to peoples like yourself how did you learn so much and get into it

a yes i do love using old tvs and transformer for my deadlift training, good video its always exciting finding some odd device and taking it apart to see whats inside and what can be used, i prefer switches and relays, they can be always usefull

I always find interesting things in trash. I found a 90s pc last night. Some of this motherboard capacitors are dead, i Hope to replace It from another found TV or similar boards! If not, i Will buy it

I have always understood the 'Dual Resonance' part of a DRSSTC to be matching the inductance and capacitance of the primary circuit (which indeed, as you pointed out, should resonate at the same frequency as the secondary + topload + streamers) such that the impedance of the primary circuit consists only of the resistance of the coil wire and the ERS of the capacitors; the reactance is thus equal to (or nearly) zero. You pointed out that having your reactance too close to zero results in (often dangerously) high current, but didn't really mention the connection between this effect and the efficiency gains that this "dual resonance" affords. One way to "beat" (pun perhaps intended) the high current is to use an interrupter circuit to ensure that current does not get so high that it leads to catastrophic failure of the driver switches; one needs also to take precautions that 'zero voltage switching' occurs within the driver (or again, the switches - MOSFETs, IGBTs, etc. - will be destroyed).

too lazy, best i got is a bin full of motherboards and wire bundles

I save the plastic shell from any powersupply I'm tossing. They are great for little projects.

POV: most of these capacitors cost less than 10c/piece so you could really buy it, there's not much chance you'll need the exact type, also they do in fact age and dry out.

Scavenging at its best

Lmao i lost it on the last one 😆