grid current वाक्य
उदाहरण वाक्य
मोबाइल
- If grid current is not permitted to flow, the class is AB 1.
- This impedance will be determined by the grid current in Class C or AB2 operation.
- Gas and ions within the tube contribute to grid current which can disturb operation of a vacuum tube circuit.
- If grid current is allowed to flow ( adding more distortion, but giving slightly higher output power ) the class is AB 2.
- This design uses a triode, the grid current drawn in this system is larger than that required for the other two basic designs.
- Grid currents can place extreme demands on the driving circuitry, sometimes requiring as much as 8 watts input for larger tubes such as the 211.
- Some of these valves use aligned grids to minimise grid current and beam plates instead of a third grid, these are known as " beam tetrodes ".
- One potential disadvantage of the grid leak detector is that the input impedance of the detector may be affected by the need to self bias the detector tube with grid current.
- Amplitude distortion in a class A triode stage can be small if care is taken to prevent the anode current from becoming too small and ensuring that grid current does not flow at any point.
- The principle of the DFIG is that rotor windings are connected to the grid via slip rings and back-to-back voltage source converter that controls both the rotor and the grid currents.
- Modern air cathodes consist of a reactive layer of carbon with a nickel-grid current collector, a catalyst ( e . g ., cobalt ), and a porous hydrophobic PTFE film that prevents electrolyte leakage.
- Because the grid is negatively charged relative to both the anode and the screen grid, it repels any secondary electrons back to the anode preventing them from contributing to the screen grid current, and to any negative resistance characteristic.
- Although this may be mitigated to some degree by taking the resistor to the top of the tuned circuit ( i . e . in parallel with the capacitor ) and through the coil to earth, or by circuit design and component optimization, forward grid current will still load the input signal ( and reduce the Q of the tuned circuit ).
- A "'grid-leak detector "'is a thermionic valve ( UK, Australia, NZ etc . ), or vacuum tube ( USA ), circuit used in older vacuum tube grid bias voltage necessary for proper operation from grid current that occurs in all vacuum tubes due to electrons attracted to the grid during the positive part of the RF cycle.
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