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What is the difference between filament current and tube current?
Wiki User
∙ 14y ago
The current supplied to the filament for heating is defined as the Filament current.
whereas
When the filament is heated to a high temperature, the electrons are emitted. The flow of electrons form Cathode to anode is the tube Current.
Wiki User
∙ 14y ago
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What are neon signs made out of?
They are made out of glass as a the tube and there is no active filament what actually creates the glowing is there is a gas inside the tube and the electricity that runs to it creates the gas to ionize which creates light.
What is the difference between pipe and tube fittings?
Pipe is identified by NB and thickness is defined by Schedule whereas Tube is identified by OD. For more detail about piping click here : http://pipingguide.blogspot.com/
How do you fix a cathode ray tube?
A cathode ray tube typically is not repairable. It is like a light bulb in that the filament may fail. If that happens, you are out of luck. If the picture is dim, a transformer used to be available from Radio Shack and other electronics suppliers, that will boost the filament voltage and increase the brightness of the picture temporarly. That is the only "repair" possible other then replacement. If you are sure the problem is a bad CRT and you have a black screen..you are out of luck for repair...
What is a light bulb wire made out of?
A light bulb is made out of three items. A filament produces the light, glass gives the light bulb shape and controls the brightness, and the base allows the bulb to be placed in a socket.
When was the 1st amplifier made?
the first amplifier was made in the year 1909. this was the audio amplifier of vacuum tube type.
What is filament current?
The current supplied to the filament of an electron tube for heating.
What is the difference between the normal light globe and a fluorescent tube?
"Normal" light globes use a glowing filament, heated by the current. Flourescent tubes ignite a gas within a tube, using an arc.
What measures the current sent to the x-ray tube filament?
mA meter
What is x-ray tube voltage?
X-Ray voltage means voltage which is applied across anode & cathode, this is of very high voltage (in KV). This causes a high electric field for the moving of electrons emitted from cathode to anode. One more voltage wrt X-ray tube is filament voltage. Filament voltage with some appropriate current is applied to filament for the emitting of electrons. This current is proportional to the intensity of X-ray radiation generated from the tube. More current through the filament causes permanent damage of filament.
What is the difference between filament and fiber?
FIBRE - FIBRE IS A LONG NARROW , THIN TUBE LIKE STRUCTURE FOUND IN PLANTS AND ON THE ANIMALSA slender threadlike object or fiber, esp. one found in animal or plant structures.is called filament.
What is filament transformer?
In vacuum tube devices, one electrode of the tube (the filament) needs low voltage at relatively high current, while another one (the plate) needs a high voltage at relatively low current. It's hard to build a single power supply to provide both of these, so the filament is usually supplied from its own separate transformer. Nobody has worried about things like this since a short time after transistors came along.
How vacuum tube works?
The vacuum tube contains a filament or cathode sealed in an evacuated glass envelope. When hot, the filament releases electrons into the vacuum, a process called thermionic emission. A second electrode, the anode or plate, will attract those electrons if it is at a more positive voltage. The result is a net flow of electrons from the filament to plate. However current cannot flow in the reverse direction because the anode is not heated and does not emit electrons. The filament (cathode) has a dual function: it emits electrons when heated; and, together with the plate, it creates an electric field due to the potential difference between them. Such a tube with only two electrodes is termed a diode, and is used for rectification. Since current can only pass in one direction, such a diode (or rectifier) will convert ac to pulsating dc.
Is the amount of space charge created at the cathode is primarily controlled by the tube current?
The cathode space charge is determined by the voltage on the filament.
What is the difference between tube and rail?
tube is underground but rail is on the ground :)
What is the filament of an X-ray tube made of?
Rhodium OR Tungsten or Molybdenum ...............................................GHo$t
What is the filament used in tubelight-?
The type of filament used in tube light is that one which is thin and surrounded by an oblong metal shield.
Can you measure a vacuum tube using ohmmeter?
Maybe, but not sure info would be useful. You can use ohmmeter to check that a tube's filament is intact. Broken/burned-out filament is most likely reason for dead tube.
