anode current การใช้

• A common mnemonic is ACID for " anode current into device ".
• The ( copper ) anode current collector can dissolve into the electrolyte.
• In an IGCT, the gate turn-off current is greater than the anode current.
• A relatively small variation in voltage on the control grid causes a significantly large variation in anode current.
• Vacuum devices have a near constant anode current for a given level of illumination relative to anode voltage.
• It also results in higher transconductance, which is a measure of the anode current change versus grid voltage change.
• This involved use of a resistor from the cathode to ground, which provides better control of anode current through negative feedback.
• "In short the anode current is controlled by the electrical potential ( voltage ) of the first grid ."
• Although the capacitance is small, around 500 pF, due to the low anode current it is sufficient to act as a filter capacitor.
• The screen found in tetrodes and pentodes, greatly increases the valve's gain by reducing the effect of anode voltage on anode current.
• It can be reduced by choosing very pure materials for the cathode nickel, and running the tube at an optimized ( generally low ) anode current.
• It can be reduced by choosing very pure materials for the cathode nickel, and running the valve at an optimized ( generally low ) anode current.
• Another option is to add overcurrent protection in the external circuit, so that when the measured anode current exceeds a safe limit, the high voltage is reduced.
• 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 2J42 Magnetron, with a power output of some 7 kilowatts, is rated for anode current of 4.5 amps ( pulse peak ) at anode voltage of 5, 500 volts.
• The anode current is set by the value of the grid voltage relative to the cathode and this voltage is now dependent upon the value of the resistance selected for the cathode branch of the circuit.
• 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.
• In 1942, the 958A with tightened emission specs was introduced after it turned out that 958s with excessively high emission kept working after the filament power was turned off, the filament still sufficiently heating on the anode current alone.
• Although Edison was aware of the unidirectional property of current flow between the filament and the anode, his interest ( and patent ) concentrated on the sensitivity of the anode current to the current through the filament ( and thus filament temperature ).
• The design is today known as the beam tetrode but historically was also known as a kinkless tetrode, since it is a four-electrode device without the negative resistance kink in the anode current vs anode voltage characteristic curves of a true tetrode.