An insulated-gate bipolar transistor?

[Longbow]

Re: An insulated-gate bipolar transistor?

There is also a new type of MOSFET called a SiC MOSFET which is ideally suited to HV applications. Example attached:


Also a little discussion of the applications here:
http://electronicdesign.com/power/wh...-power-mosfets

These parts look a bit sturdier than the early BPT's used in televisions.

[keeney123]

Re: An insulated-gate bipolar transistor?

Yes.

Pic1:
Measuring the Q-factor of a resonator with the ring-down method
http://www.giangrandi.ch/electronics...ingdownq.shtml

pic2:
http://seniorphysics.com/physics/eei.html

That will give you inductance at resonance. It will not measure break down at high voltage.

[budm]

Re: An insulated-gate bipolar transistor?

Yes.

Pic1:
Measuring the Q-factor of a resonator with the ring-down method
http://www.giangrandi.ch/electronics...ingdownq.shtml

pic2:
http://seniorphysics.com/physics/eei.html

Yep, generator not frequency counter like you suggested.

[budm]

Re: An insulated-gate bipolar transistor?

Why south Korean's LG and Samsung company during 10 years period of time can surpass Japan TV company like Sony, Sharp...Become No 1 TV makers in the world! Because the USA is behind them and give A technical support, , Why? Since Korean war US is the majority aid of South Korea and America finance the war needs money, so if South Korea can afford its own defense the quickest way to make money is from consumer electronics? I think UK is behind them also because Britain is an important anti-communist country, plus an ally of the United States........Russian has 100 more advantages, benefits than South Korea became A TV leader in the world..............Am i right?.......................

Bibliography:
South Korea Can Afford Its Own Defense
http://www.theamericanconservative.c...s-own-defense/
the South Koreans currently pay about 40 percent of the costs of keeping U.S. forces in their country

I am telling Trump!!!
http://www.globalresearch.ca/make-am...lated_articles

Why America Needs War
http://www.globalresearch.ca/why-ame...ds-war/5328631

During the Second World War America had witnessed a modest redistribution of the collective wealth of the nation to the advantage of the less privileged members of society.
America, or rather, corporate America, was orphaned of its useful Soviet enemy, and urgently needed to conjure up new enemies and new threats in order to justify a high level of military spending.
And so Mars could remain the patron saint of the American economy or, more accurately, the godfather of the corporate Mafia that manipulates this war-driven economy and reaps its huge profits without bearing its costs. The despised project of a peace dividend could be unceremoniously buried, and military expenditures could remain the dynamo of the economy and the wellspring of sufficiently high profits.

Samsung works with SONY, LG works with Philips. It is also hard work and dedication of the people that are willing to work hard and study hard, not like some people that want the hand out. Hyundai works with MISUBISHI.

S.Korea is only paying 40% to the US Arm force that willing to die to help to protect their country?

[Longbow]

Re: An insulated-gate bipolar transistor?

Found this interesting paper comparing a few different types of switching devices:


These devices are really amazing. In the end, after all the discussions and coffee breaks and calculatiions, the most likely part is selected and empirically tweaked in-circuit for best operation. There are just too many variables to consider on paper. Parasitic capacitance (and specifically gate/source and gate/drain capacitance) is the biggest deal so a hefty low impedance driver is necessary. And then you have to guess when it comes to switching inductive loads. Will it live long and prosper? That's the main trouble with flyback switchers - they are more difficult to sub.

[capwizard]

Re: An insulated-gate bipolar transistor?

USA helps Japan recovered rapidly after WWll but this little brother Japan almost surpasses US, So US switched to support S. Korea.....that is my personally point of views...I am the TV repairman who did not watch TV..........but I will watch Trump Inauguration.....because he makes me laugh and an elegant First Lady that is whom i will pay attention to .......I bet ju ......she gonna wear white dress.................

[budm]

Re: An insulated-gate bipolar transistor?

US helps Japan, Germany, and MANY other countries after WWII and today.

https://howmuch.net/articles/countri...eceive-from-us

[capwizard]

Re: An insulated-gate bipolar transistor?

"U.S. Spends $35 Billion Helping Out The World" ...Trump will cuts big chunk of it, he will make friend with Russia against with China, Because the TAX increasing for China no more cheap parts from Alibaba, Aliexpress for us that will be good for our local Ebay and Amazon.


______________________________________________
Inauguration.... I bet ju.............the First Lady Melania Trump will wear white gown!....
PS: Why we pay more attention to her than him? Woo-oo can you imagine what Hillary gonna wear?

From Jackie Kennedy to Michelle Obama: 16 Stunning Inaugural Gowns
http://time.com/4636471/first-lady-i...-inauguration/

These Two Big-Name Designers May Be in the Running to Dress Melania Trump for the Inauguration
http://www.usmagazine.com/stylish/ne...ration-w461559

What will Melania Trump wear to the inauguration?
http://www.csmonitor.com/The-Culture...e-inauguration

Here’s what Melania Trump is expected to wear for inauguration events
http://www.kansascity.com/living/art...#storylink=cpy

Which Designer Will Dress Melania Trump For The Inauguration?
http://www.bravotv.com/blogs/which-d...e-inauguration