The combination of the effects of the screen grid and the damping resistor often allow the use of this design without neutralization.
12.
Vacuum-tube tetrodes, using a screen grid, exhibit much lower grid-plate capacitance and much higher output impedance and voltage gains than triode vacuum tubes.
13.
In screen-grid tubes and beam tetrodes, the first grid is the control grid and the second grid is the "'screen grid " '.
14.
The combination of the effects of the screen grid and the grid damping resistor often allow the use of this design without neutralization.
15.
The new box also offered an electronic program guide _ an on-screen grid like those provided by direct-broadcast satellite services and some high-end television sets.
16.
Secondary emission electrons from the anode are repelled by the negative potential on the suppressor grid, so they can't reach the screen grid but return to the anode.
17.
Another approach in the days of electronic tubes ( valves ) was to connect the S meter to the screen grid circuit of the final IF amplifier tube.
18.
Thus the grid configuration was grid 1, signal input; grids 2 and 4 screen grids ( connected together-again, usually internally ) and grid 3 was the oscillator input.
19.
In 1930, Crosley was marketing the " Roamio ", with " screen grid neutrodyne power speaker " for automotive use, priced at US $ 75 before accessories and installation.
20.
The solution was to add another grid between the screen grid and the main anode, called the suppressor grid ( since it suppressed secondary emission current toward the screen grid ).
