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Show For Stabilizing Radio-Frequency Radio-Frequency Amplifiers A very interesting system for the stabilization of R. F. amplifiers is described de-scribed in U. S. patent No. 1605042, granted to Edward H. Lange of New York city. By referring to the circuit diagram it can be seen that the system sys-tem is so arranged that any feed-back Another Stabilized Radio-Frequency j Circuit Employing "Phase-Shifting Condensers. of energy from the plate to the grid of a tube will be out of phase with the original impulses and so will not combine com-bine with them to produce oscillation. This is accomplished by means of the small capacities C and CI. It will be noted that the radio-frequency currents cur-rents are prevented from passing through the common battery' circuit by the R.F. chokes L and LI, and are instead by-passed through condensers C2 and C3 to the filament legs of the tubes. Radio News. i |