Theory of Detection in a High Vacuum Thermionic Tube

In this paper some new ideas have been presented regarding tion by means of the high vacuum tube in connection with a grid leak and condenser with a grid leak and condenser, which show the function of the grid leak and condenser as well as their proper values for best detection. It has been shown that three main sources of distortion exist with this method of detection. They may be briefly stated as follows: Two sources from the curvature of the grid characteristic-one of which is frequently distortion due to the harmonics produced, and the other an amplitude distortion arising from the fact that the rectified grid current does not vary linearly with the input voltage. The remaining distortion is produced by the grid leak and condenser.