Problems IX
- Calculate the probable distance that an electron can travel from cathode to anode which are spaced 1 cm apart without striking an atom of gas. The electron must be capable of traveling at least 1 cm without the probability of encountering gas atom. The diameter of gas atom is about 10-8 and the vessel is assumed to be evacuated to a pressure of 7x10-5 mm, leaving about 10+12 atoms of ga per cubic centimeter.
- Emission of the charged particles from a heated cathode or emitter of a vacuum tube is known as _____?
- Discharge of electrons from a body as the result of being bombarded by electrons emitted from a primary source?
- The source of electron in a vacuum tube comes from the _____?
- The flow of electrons in a triode is being regulated by the _____?
- The effect of the electrons crowding around the cathode after being liberated by the cathode but lack of energy to traverse to the plate in a vacuum tube is known as _____?
- A four electrode vacuum tube consisting of cathode, two grid, and a plate is known as _____?
- A kind of multigrid vacuum tube which is also known as pentagrid tube of their five grid and is commonly used in frequency converter or mixer, is also known as _____?
- A kind of gas filled tube which uses a grid to control the breakdown voltage of the tube?
- A kind of gas filled tube which is used for oscillator to generate microwave frequencies?
- Vacuum tubes found in TV receivers, and oscilloscopes?
- Equivalent circuit commonly used in transistor small signal analysis (low power, low frequency operation).
- T-equivalent circuit considered as a _____ representation?
- When the transistor is operated at higher frequency, the appropriate model to be used _____?
- For a common emitter amplifier hybrid parameter, hfe stands for forward transfer current ratio, this parameter is approximately equal to?
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