plate current वाक्य
उदाहरण वाक्य
मोबाइल
- Variation in the grid voltage will cause identical proportional variations in the plate current.
- The plate current is progressively reduced as the grid is made more negative with respect to the cathode.
- This effect occurred especially in pulse and digital circuits, where tubes had no plate current flowing for extended times.
- Changing the grid voltage will change the plate current; by suitable choice of a plate load resistor, amplification is obtained.
- A positive voltage on the grid will attract more electrons from the cathode, so more reach the plate, increasing the plate current.
- A more negative voltage on the grid will repel some of the electrons, so fewer get through to the plate, reducing the plate current.
- Therefore, a low power varying ( AC ) signal applied to the grid can control a much more powerful plate current, resulting in amplification.
- The plate current was routed through that portion of the rectifier heater, in order to make up for the current diverted to the dial lamp.
- Plotting plate current as a function of applied grid voltage, it was seen that there was a range of grid voltages for which the transfer characteristics were approximately linear.
- The main problem with these designs is constructing output transformers able to sustain the plate current and resultant flux density without core saturation over the full audio-frequency spectrum.
- Since below cutoff the plate current ceases to respond to the grid voltage, the voltage on the grid must remain above the cutoff voltage for faithful ( linear ) amplification.
- This tendency can be reduced by a process known as periodic reverse, where the plating current is reversed for short periods during electroforming and the excess is preferentially etched away.
- Where EPC is the end plate current, g ACh is the ionic conductance activated by acetylcholine, V m is the membrane potential, and E rev is the reversal potential.
- Plate detectors are used in both pF to 0.002 �F for triodes, or 250 pF to 0.001 �F for tetrodes and pentodes ) is used to regulate plate current.
- A related equation ( which is derived from the more general equation above ) determines the magnitude of an end plate current ( EPC ), at a given membrane potential, in the neuromuscular junction:
- The input signal is able to perturb ( change ) the potential of the grid, this in turn will change the anode plate so hence on many designs the anode current is named the plate current.
- Those other designs offer lower voltage gain ( traded off for higher plate current ) than the 12AX7 ( which has a voltage gain or A _ v of 100 ), and are more suitable for high-frequency applications.
- One reason for SETs being ( usually ) limited to low power is the extreme difficulty ( and consequent expense ) of making an output transformer that can handle the plate current without saturating, while avoiding excessively large capacitive parasitics.
- This causes a downward " kink " in the plate current vs . plate voltage curve " ( graph below, grey region ) " when the screen grid is biased at a higher voltage than the plate, as described below.
- In most modern tetrodes, to prevent parasitic oscillations the plate is given a coating which drastically reduces the unwanted secondary emission, so these tubes have virtually no negative resistance " kink " in their plate current characteristic, and cannot be used in dynatron oscillators.
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