maziaar83 said:
I advise u completely forget about vacuum there is no usage nowadays, save your time for studying about transistors and their operation as amplifiers
Tsk, tsk, tsk, not so, maziaar83!
Vacuum tubes are in more demand then ever before, mainly used in the music industry. I can build a 10-watt vacuum tube gitar amplifier and sell it for $2000! Yeah, you read that correctly, 2 grant! A 10-watt tube amplifier compares with about 100 watt transistor amplifier (not sure exactly).
The demand for tube amplifiers has quadrupled in the last couple years. The sound is warm yet powerfull. We all know transistor amplifiers as used in our stereo systems, etc. Their power just doesn't measure up to tubes.
Try to built a tube amplifier on your own and see how much fun it is and satisfactory! If you need diagrams, let me know.
Added after 7 minutes:
saubhik said:
hai
im very new to electronics plz help me how a transistor different from vacuum tube
in construction and in functional:?::arrow:
Hello saubhik:
The only differences is actually their size and performace. Transistors are cheap to manufacture (7cents for a 2N3904) and easy to troubleshoot. Tubes on the other hand are much more powerful but require a 'warm-up' period, create a heat, are fragile, and expensive. A glass 1N4148 diode is very small, yet the equivalent tube format sticks out like a sore thumb.
After two decades of decline in demand for tubes, they are making a come-back. Escpecially in the music industry. Over-adjusting a tube amp is nothing and very forgiving. Doing the same for a transistor amplifier will surely blow the output transistors! I guess you get the idea...
If you have more questions I will be happy to answer them...