depletion layer sentence in Hindi
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- This depletion layer can also be made of a Schottky diode.
- The depletion layer at the junction is at the origin of the diode's rectifying properties.
- In both cases this leads to a separation of charges ( such as through a depletion layer ).
- With C _ D = capacitance of the depletion layer and C _ { OX } = capacitance of the oxide layer.
- The figure shows an example of a cross section of a varactor with the depletion layer formed of a p n junction.
- This combination of n-doped nanowire and the p-doped channel forms a p n junction and depletion layer is formed.
- These layers of fixed positive and negative charges are collectively known as the depletion layer because they are depleted of free electrons and holes.
- The depletion layer is so-called because it is depleted of mobile carriers and so is electrically non-conducting for practical purposes.
- This is due to the resulting internal field and corresponding potential barrier which inhibit current flow in reverse applied bias which increases the internal depletion layer field.
- When the depletion layer spans the width of the conduction channel, " pinch-off " is achieved and drain-to-source conduction stops.
- The regions near the p n interface lose their neutrality and most of their mobile carriers, forming the space charge region or depletion layer ( see figure A ).
- CB may be more physically plausible, in agreement with the physical origin of the effect, which is a widening of the collector base depletion layer that depends on " V"
- In the threshold voltage page the definition is the voltage required to push all the majority carriers away from the gate creating a depletion layer ( at higher voltages the inversion layer forms ).
- But, in practice, surface impurities within the part of the semiconductor that touches the metal terminals will greatly reduce the width of those depletion layers to such an extent that the metal-semiconductor junctions do not act as diodes.
- Thus, field penetration is arrested when the exposed negative acceptor ion charge balances the positive charge placed on the insulator surface : the depletion layer adjusts its depth enough to make the net negative acceptor ion charge balance the positive charge on the gate.
- Because the valence band levels near the surface are fully occupied due to the lowering of these levels, only the immobile negative acceptor-ion charges are present near the surface, which becomes an electrically insulating region without holes ( the " depletion layer " ).
- In equilibrium, with no applied bias, thermally assisted diffusion of electrons and holes in opposite directions across the depletion layer ensure a zero net current with electrons flowing from cathode to anode and recombining, and holes flowing from anode to cathode across the junction or depletion layer and recombining.
- In equilibrium, with no applied bias, thermally assisted diffusion of electrons and holes in opposite directions across the depletion layer ensure a zero net current with electrons flowing from cathode to anode and recombining, and holes flowing from anode to cathode across the junction or depletion layer and recombining.
- Constriction of the conducting channel is accomplished using the field effect : a voltage between the gate and the source is applied to reverse bias the gate-source pn-junction, thereby widening the depletion layer of this junction ( see top figure ), encroaching upon the conducting channel and restricting its cross-sectional area.
- Barrier lowering increases as channel length is reduced, even at zero applied drain bias, because the source and drain form pn junctions with the body, and so have associated built-in depletion layers associated with them that become significant partners in charge balance at short channel lengths, even with no reverse bias applied to increase depletion widths.
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