Performance of Electron Power Tubes Comparison with Solid-State Devices

Performance of Electron Power Tubes Comparison with Solid-State Devices

Revealed by: Aaliyah

On: 07 Nop, 2017

Viewed:1,174 times - 8 hour, 4 minute, 38 second ago

Downloaded: 0 times -

Category: Circuit

Rating:
4

Rated 4 / 5 based on 483 reviews

Power grid tubes are traditionally used for generation and amplification of power at radio frequencies; for modulation, switching, and rectification; and formerly, for low power level applications including receivers and early computers. Solid-sta...

Power grid tubes are traditionally used for generation and amplification of power at radio frequencies; for modulation, switching, and rectification; and formerly, for low power level applications including receivers and early computers. Solid-state devices and packages have eliminated tubes from all low-power-level applications where information processing is the objective, and they are becomeing widely used where up to 2 kW of CW power is required for radio transmission below about 2 Ghz. At much higher power levels, power tubes remain the ecomonical choice and are likely to remain so for the forseeable future.

Fig. 9 shows the RF power obtainable from various devices as a function frequency. Data are taken from manufactures catalogs and other published information. It is clear that in terms of maximum CW power obtainable, a single power tube device is many orders of magnitude more powerful than a single solid-state device over the whole frequency range. This situation not likely to change. It exists because of the fundamental physical distinction between the properties of electrons moving in a vacuum and electron moving in solid material , and the properties of the media themselves.

This can be seen from the following discussion.

Radio frequency generators are really converters of DC to RF power. The key elements are:

A. A DC power supply

B. An RF resonant circuit with Q greater than approximately 5

C. A source of electrons

D. A means of bunching electrons and accelerating the bunches

E. A means for interaction between the bunches of electrons and the resonant circuit so that energy is extracted from the electrons and transferred via the circuit (which, like a flywheel, stores energy) to a useful load such as an antenna or a substance to be heated. (See Fig.10) 

Related Posts

Power Supply of Wheatstone Bridges

To obtain an output signal from a Wheatstone bridge as a result of the change in one or more sensors placed in its arms, we must supply the bridge with electric excitation. Whether voltage or curre...

Difference and Average Measurements: Compensation Signal Conditioning for Resistive Sensors

An additional advantage of a bridge, as compared with a voltage divider, is that it permits the measurement of the difference between quantities or its average. Furthermore it permits an increase i...

How to use a Multimeter to measure DC Voltage & Resistance

A multimeter is a measuring instrument that anyone involved in electronics will need to use at some stage. A multimeter can be used to measure voltage, current, resistance, continuity and other par...

Beginners: How to Draw a Circuit Diagram using KiCad

There are a lot of software that available on internet. but today we only facus on one software as example. how to draw a circuit diagram using KiCad. Want to draw your first electronic circuit usi...

How to Read Circuit Diagrams for Beginners

This tutorial will guide you how to read circuit diagram like titled above. As we known electronic circuit similar to circuit diagram but people also called as a schematic diagram we hope this call...

What is a Pressure Sensor?

Pressure measurement in liquids or gases is common, particularly in process control. Pressure is defined as the force per unit area. To measure a pres-
sure, it is either compared with a known...

As the fastest growing demand of circuit and wiring diagram for automotive and electronics on internet based on different uses such as electronic hobbyists, students, technicians and engineers than we decided to provide free circuit and wiring diagram base on your needed.

To find circuit and wiring diagram now a day its easy. E-learning through internet as a right place to search an exact circuit and wiring diagram of your choice and it's much fun and knowledgable. On internet you will find thousands of electronic circuit diagrams some are very good designed and some are not. So you have to modify them to make them according to your needs but some circuits are ready to make and require no changes.

There are many categories of circuit and wiring diagrams like automotive, audio circuits, radio & RF circuits, power supply circuits, light circuits, telephone circuits, timer circuits, battery charger circuits etc. There are many types of circuit and wiring diagrams some are very easy to build and some are very complicated, some are so small and some contain huge list of parts.

We provides free best quality and good designed schematic diagrams our diagrams are free to use for all electronic hobbyists, students, technicians and engineers. We also provides a full educational system to students new to electronics. If you are new to electronics you are a student or a electronic hobbyist and want to increase your knowledge in electronics or want to understand electronics in a very easy way so this is the right place for you we provide electronics beginner guide tutorials to easily understand complicated electronic theory. Our mission is to help students and professionals in their field.