Performance of Electron Power Tubes Comparison with Solid-State Devices
Launched by: Sophia
On: 07 Nop, 2017
Viewed:1,123 times - 18 hour, 13 minute, 36 second ago
Downloaded: 0 times -
Rated 4 / 5 based on 270 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)
This application report describes the design and function of a stereo high-fidelity tone control using a single TLC074 quad operational amplifier. A rail-to-rail operational amplifier is used to pr...
The BA3853BFS is a dual-channel electronic volume controller built around a low-noise, low-distortion VCA. It is suited for car-audio applications, and has performance that rivals mechanical-type v...
Dynamic range is something of a challenge for rig makers now. Even with great AF dynamic range, the capability of DSP can push the noise floor down to the point where it's hard to hear the&nb...
In this project, we will go over how to connect a microphone to an amplifier circuit so that we can amplify the sounds recorded by the microphone.
This way, if the sig...
Here is the circuit of a medium-power AM transmitter that delivers 100-150 mW of radio frequency (RF) power...
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.