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What else can I help you with?
The principle underlying the creation of a space charge in the x-ray tube is?
Thermionic Emission
What are the names of some old radio components?
Tube Choke Condensor Vibrator (used in HV battery supplies) Valve is another term for vacuum tube, used in old radios.
In which year first successful diode and triode vacuum tubes invented?
The first successful diode vacuum tube, known as the Fleming valve, was invented by John Ambrose Fleming in 1904. The triode vacuum tube, which allowed for greater amplification of electrical signals, was developed by Edwin Howard Armstrong in 1906. These inventions were pivotal in the development of electronics and telecommunications.
IS vacuum tube ohmic?
Vacuum tubes are generally not considered ohmic devices. Ohmic materials exhibit a linear relationship between voltage and current, described by Ohm's law (V = IR). In contrast, vacuum tubes operate based on thermionic emission and can exhibit nonlinear characteristics, meaning their current-voltage relationship can vary based on factors like temperature and applied voltage. Thus, they do not maintain a constant resistance across different operating conditions.
What does BY stand for in BY 127 diode?
BIPOLAR A2 It does not stand for anything. It is a maker's designation mark, a throwback from the thermionic tube (valve) days. The letters in front of the number used to indicate the heater voltage and the type of internals (triode, pentode etc) B used to indicate that it was a semiconductor, not a tube. There are different designations around the world, for the same equivalent device, American, European and Japanese.
What are the characteristics of synthetic fibre?
the earliest synthesizers used a variety of thermionic-valve (vacuum tube) and electro-mechanical technologies.
What has the author Emrys Williams written?
Emrys Williams has written: 'Thermionic valve circuits' -- subject(s): Vacuum-tube circuits
Can you perform rectification without using a semicondutor device?
Yes; solid state rectifiers were made using values (also called vacuum tubes). ************************************************************* A solid state device is a semiconductor device. A valve (vacuum tube) is a thermionic device, so yes, rectification can be achieved with a thermionic rectifier.
What decreases the vacuum draw of evacuated tube?
Both time and temperature can decrease the vacuum draw of an evacuated tube. Hence the provided expiration dates and storage temperature of tubes. The vacuum of a tube will decrease if it is too old or if stored at a colder temperature than recommended.
What is the purpose of the EL34?
The EL34 is a type of vacuum tube, otherwise known as a thermionic valve. It is typically used in audio amplification circuits as a series regulator. They are found in some high-powered audio amplifiers.
What gas is used in a vacuum tube?
Vacuum tubes are typically evacuated of gases to create a vacuum inside. However, some specialized vacuum tubes may use inert gases like argon or neon to improve performance or provide specific characteristics.
Where does the thermionic emission occur in cathode rays tube?
Thermionic emission occurs at the cathode in a cathode ray tube, which is a vacuum tube that generates electron beams. When the cathode is heated, electrons are emitted and accelerated towards the anode, leading to the generation of cathode rays within the tube.
Old radio component valve?
Valve is another term for vacuum tube, used in old radios.
What are the computers that where invented in the first generation of computer?
ENIAC,EDSAC,EDVAC,UNIVAC(I &II) and MARKS1
What is the vacuum tube also called?
In Great Britain its also called "Valve"
What is a evacuated tube?
An evacuated tube is a sealed glass or metal tube from which air has been removed to create a vacuum, minimizing heat transfer through conduction and convection. This design is commonly used in solar collectors and thermal insulation applications, where it enhances energy efficiency by reducing heat loss. The vacuum inside the tube acts as an insulating barrier, allowing for effective heat retention or transfer depending on its application.
What is dual triode tubes?
It's a thermionic valve/electron tube with *two* triodes in the one envelope. Examples: 3A5, 6J6, 6SN7/6SL7, 12AU7/12AX7, ECC32, ECC82.
