I want to know what is IGBT..........?

 

http://lmgtfy.com/?q=igbt

 

Hello,

This page has several links on the IGBT:
http://www.educypedia.be/electronics/composemiigbt.htm

Bertus

 

That is something that could be answered more easily and completely just by looking it up.

Wikipedia first. Then tell us what parts you don't understand.

Better questions get better answers. Doing some research first will either answer your questions or allow you to ask better questions.

 

http://en.wikipedia.org/wiki/IGBT

 

The decreased patience you may be noticing has its reasons.

It is just seeming suspiciously like you do not really care about the answers at all and you are just testing us with random questions.

You might do better to focus on one subject for a week at a time at least and work your way up through all these subjects and you will find it all much less confusing.

 

At least he hasn't asked how to build those secret synchro-retroverters yet.

 

Do those use Selsun motors?

 

Rritish is in India, barely speaks Engrish and knows almost nothing about electronics.
I think he is only 8 years old.

 

no body is perfect........!

 

no body is perfect........!

Many people in the western world speak perfect English, know almost everything about electronics and are adults.

Why are you chatting on all these Western forums? Maybe you should chat with other kids on a website in India.

 

Now let's not get too hard on him, at 8 years old I was actually building primitive stuff with vacuum tubes but you've got to remember it was far easier back then - about all you had to deal with was tubes, resistors, capacitors, inductors, switches, relays and speakers. Even with only that minimum selection of parts to design with it was still a new learning experience every time getting something to work. Books from the library were my only references and I learned things one step at a time, making many mistakes but learning from every one of them.

Hands on experience can not be replaced by any amount of reading or asking questions.

At 8 I'd suggest asking for one of these for your next birthday, or getting a bunch of friends to go in together with you to buy one.

http://www.mcmelectronics.com/product/ELENCO-EP130-/80-5035

 

okk................

 

i have seen this glass tubes many time, pls tell name of it in this circuit...?

 

They are called "vacuum tubes;" although, some older cultures prefer to call them "valves."

John

 

or sometimes known as thermionic valves

Probably a good study for you as it's easier to understand how they work which leads to understanding transistors a little easier.

 

I have taken out ups pcb from old ups, i want to know what the use of IC337(variable voltage) and quad. op-amp 5 IC's & one more 8pin(3..) ic. the name i can't tell as it was not clear.
pls, tell the use of them.

 

I have taken out ups pcb from old ups, i want to know what the use of IC337(variable voltage) and quad. op-amp 5 IC's & one more 8pin(3..) ic. the name i can't tell as it was not clear.
pls, tell the use of them.

Do a google search on the ones you can read the numbers off of.

We cannot 'know' what an IC is, if you don't know the number. With your nose 6 inches from the PCB, you say you cannot tell what it is. How are we going to tell you from 10,000 miles away???

If you know what components other than the unknown is, there is a chance we could narrow down the possible kinds of IC that might be used, but we cannot tell you what it is EXACTLY

 

Hello,

Here is the electronics opening page from the EDUCYPEDIA:
http://www.educypedia.be/electronics/electronicaopening.htm

There you will find a lot of pages with links on the several electronics subjects.

Bertus

 

We have an 8 year old....coool.

I picture my self at tht age with two wires in the main socket, holding them up and wondering what will happen if I touch them.

KIDS..PLEASE DON'T TRY THIS AT ANY COST.