L filters method for automatically adjusting the frequency of monolithic crysta
Abstract
Abstract INDIVIDUAL RESONATORS ON EACH OF A PLURALITY OF MONOLITHIC CRYSTAL FILTERS ARE ADJUSTED TO RESPECTIVE PREDETERMINED FREQUENCIES. AN ELECTRODE OF A SELECTED RESONATOR ON EACH FILTER IS POSITIONED IN THE RESPECTIVE PATH OF A SUBSTANTIALLY NON-DETERGENT STREAM OF METAL VAPOR. EACH SELECTED RESONATOR, IN TURN, IS EXCITED AND ITS RESONANT FREQUENCY IS MONITORED TO INTERRUPT THE RESPECTIVE VAPOR STREAM WHEN A PREDETERMINED VALUE IS REACHED. AN ELECTRODE OF ANOTHER SELECTED RESONATOR ON EACH FILTER IS POSITIONED IN A RESPECTIVE VAPOR STREAM AND THE FREQUENCY MONITORING FACILITIES ARE CHANGED TO SENSE A DIFFERENT PREDETERMINED VALUE. THE WIDTH OF THE VAPOR STREAMS MAY BE CHANGED TO ACCOMMODATE DIFFERENT WIDTHS OF ELECTRODES AND THE DENSITY OF THE VAPOR STREAM MAY BE REDUCED WHEN THE RESONANT FREQUENCY APPROACHES THE PREDETERMINED VALUE. ALSO, TIMING FACILITIES ADVANCE THE CYCLE IF A RESONATOR FAILS TO REACH THE PREDETERMINED VALUE WITHIN A PREDETERMINED DURATION. AFTER ALL THE RESONATORS ARE FIRST ADJUSTED TO VALUE, THE STEPS OF ADJUSTING ARE AGAIN REPEATED TO CHANGE THE RESONATORS TO STILL DIFFERNT PREDETERMINED VALUES.
Inventors
- 👤 R Rennick
- 👤 W Morse
Bibliographic Details
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