The power gain of a two cavity klystron amplifier is about 30 dB.
In order to achieve higher overall gain, one way is to connect several two-cavity tubes in cascade, feeding the output to each of the tubes to the input of the following one. Besides using the multistage techniques, the tube manufacturers have designed and produced multi cavity klystron to sere the high-gain requirement.
In a multi cavity klystron each of the intermediate cavities, placed at a distance of the bunching parameter X of 1.841 away from the previous cavity, acts as a buncher with the passing electron beam inducing a more enhanced RF voltage than the previous cavity, which in turn sets up an increased velocity modulation.
What is probably the primary advantage of the reflex klystron over the two-cavity klystron is the mechanism used to tune the device. The two-cavity klystron has mechanical tuning, but the reflex klystron is tuned electrically. And it doesn't take an electrical engineering degree for an investigator to figure out that electrical controls can be manipulated a whole bunch faster than a mechanical device.
If one amplifier has its own feedback then that will be its gain witch can be added to the next amplifier gain. if both amplifier have a common feedback then that will be to total gain for both.
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A 2 channel aplifier is an amplifier that can operate two channels. It is basically two 1-channel amplifiers in a single box. This unit is usually intended for operating a left speaker and a right speaker. A channel is the signal/power combination intended for one specific speaker. A 'Stereo' audio system typically has a left channel and a right channel. More advanced audio systems may have separate channels for different types of speakers (midrange, woofer, tweeter, very commonly subwoofer, sometimes supertweeter) or for rear channels (surround.) This sort of setup was modern during the early 90s. A bridged 2 channel amplifier is constructed in such a way that the amplifiers can be set up to operate inline providing the effect of a more powerful one-channel amplifier. If durability is a concern, a bridgeable two channel amplifier used for two channels tends to work well because it's likely to have higher quality or just more diodes so as not to be destroyed too quickly during bridged operation. Using a more powerful amplifier with the gain turned down is also a good idea if longevity is a concern.
Scroll down to related links and look at "Interconnection of two units" and find the impedance picture of amplifier and loudspeaker or microphone and amplifier. Learn about "voltage bridging" - Zout < Zin.
klystron can act as both an amplifier and oscillator whereas a reflex klystron can act as only an oscillator. klystron needs a buncher cavity(sometimes multiple bunchers) and a catcher cavity whereas a reflex klystron needs only one cavity. klystron bunches electrons in forward direction, whereas the other bunches in the reverse direction using a reflector plate. klystron needs i/p signal (accelerating or deccelerating potential) whereas the other dont.
What is probably the primary advantage of the reflex klystron over the two-cavity klystron is the mechanism used to tune the device. The two-cavity klystron has mechanical tuning, but the reflex klystron is tuned electrically. And it doesn't take an electrical engineering degree for an investigator to figure out that electrical controls can be manipulated a whole bunch faster than a mechanical device.
a. velocity modulated tube b. frequency modulated tube c. Amplitude modulated tube d. simple triode
The klystron and the traveling wave tube (TWT) are two types of microwave tubes based on the principle of velocity modulation. In these tubes, the electron beam's velocity is modulated by an external signal, leading to the amplification of microwave signals. These tubes are commonly used in radar systems, satellite communications, and other high-power microwave applications.
Emitter-Base junction should be forward biased.Collector-Base junction should be reverse biased.
The two subdivisions of the Dorsal Cavity are the Cranial Cavity and the Vertebral Cavity.
A mono amplifier. You need two for stereo.
A unidirectional amplifier & a Bidirectional amplifier
The abdominal cavity and the chest cavity are the two largest body cavities in humans.
To wire a Rockford Fosgate T500.2 amplifier to a 2 ohm load, you will need to connect two 4 ohm subwoofers in parallel. Each subwoofer's positive terminal should be connected to the amplifier's positive output terminal, and each subwoofer's negative terminal should be connected to the amplifier's negative output terminal. This will create a 2 ohm load for the amplifier. Be sure to verify the amplifier's minimum impedance requirements to ensure proper operation.
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thoracic and abdominopelvic cavity