MICROWAVE VACUUM TUBE DEVICES


Why Ordinary Vacuum Tube Devices can not generate Microwave?

Higher value of inter-electrode capacitance, lead inductance and transit time limits the high frequency operation of Vacuum Tube devices.
.Reducing the area of electrodes or by increasing the distance between them the inter-electrode capacitance can be reduced but at the same time transit time of the device increases, which in turn reduces the operating frequency.

KLYSTRON

T ....etc

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sir i want to do my seminar and it requires the advanteges and diadvanteges of pulsetube rfrigerator.. ....etc

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Vaccum Brake System
The vacuum brake is a braking system employed on trains and introduced
in the mid-1860s. A variant, the automatic vacuum brake system, became
almost universal in British train equipment and in those countries influenced
by British practice. Vacuum brakes also enjoyed a brief period of adoption
in the USA, primarily on narrow gauge railroads. However, its limitations
caused it to be progressively superseded by compressed air systems starting
in the United Kingdom from the 1970s onward. The vacuum brake system is ....etc

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To get full information or details of condenser tube failure analysis please have a look on the pages

http://seminarsprojects.net/Thread-failure-analysis-of-shell-and-tube-heat-exchanger-full-report

if you again feel trouble on condenser tube failure analysis please reply in that page and ask specific fields in condenser tube failure analysis ....etc

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AUTOMATIC TEMPERATURE CONTROL IN VACUUM BRAZING FURNACE USING P.L.C

ABSTRACT
The main objective of this project is to maintain & control temperature uniformly of the two zones in vacuum brazing furnace and braze similar or dissimilar components using certain chemicals, for the given specifications of a job
Brazing alloys used for brazing the components of gas turbines and aerospace applications contain nickel as the base material. Nickel has highest affinity for oxygen. Incase if components are brazed using nickel ....etc

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ppt working principle of pulse tube refrigerator

Abstract

The working fluid for the pulse tube refrigerator is Helium, which is non-toxic to humans and harmless to the environment. The Pulse Tube Refrigeration unit offers a viable alternative to units that currently require CFC and HCFC working fluids. Pulse Tube Refrigerators can be operated over wide range of temperatures. These units can be used in numerous space and commercial applications, including food freezers freeze dryers. It can also be used to cool detectors and electronic devices ....etc

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to get information about the topic pulse tube refrigeration system full report refer the page link bellow

http://seminarsprojects.net/Thread-design-and-fabrication-of-pulse-tube-refrigeration-system-full-report?pid=28073&mode=threaded ....etc

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for more details on 'design and fabrication of pulse tube' , please follow the thread given below

http://seminarsprojects.net/Thread-design-and-fabrication-of-pulse-tube-refrigeration-system-full-report ....etc

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what are the limitations of reflex klystron? ....etc

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To get full information or details of vortex tube refrigeration system please have a look on the pages

http://seminarsprojects.net/Thread-vortex-tube-refrigeration-system-study-material

if you again feel trouble on vortex tube refrigeration system please reply in that page and ask specific fields in vortex tube refrigeration system ....etc

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