Past efforts toward automation of Electromagnetic Interference (EMI) measurements have been concentrated on mechanical and/or electronic scanning techniques which yield analog frequency and signal amplitude informat i...
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Past efforts toward automation of Electromagnetic Interference (EMI) measurements have been concentrated on mechanical and/or electronic scanning techniques which yield analog frequency and signal amplitude informat ion, and are therefore somewhat lacking in accuracy and resolution. Effort at LTV Electrosystems, however , has been concentrated on the application of incrementally tuned receiver techniques to EMI measurement problems and has resulted in an equipment capable of automatic acquisition and measurement of unknown signals while furnishing precise digital amplitude and frequency data . This paper presents the design features and applications of an instrument incorporating these techniques. This receiver was developed to satisfy special customer requirements for use in the 10 kHz t o 32 MHz frequency band.
A method for demonstrating the effects of hazards in sequential relay circuits is given. The device used in the demonstration, containing relays with mirrors glued to their armatures, a light source, a focusing lens, ...
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This paper describes the presentations that were given to engineers to provide them with techniques to minimize electronic interference. The special electro-interference problems associated with electronic equipment f...
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This paper describes the presentations that were given to engineers to provide them with techniques to minimize electronic interference. The special electro-interference problems associated with electronic equipment for missiles and military systems were given prime attention. Stress was placed on the basic theory of electrointerference which the design engineer could apply in his daily work. In such a manner, each engineer solves the electro-interference problems related to his circuit during the design o f that circuit. This approach i s even more important if the design includes microminiature circuits, since shielding and ground solutions must be an integral part of the design. Adding large, heavy filters and transformers to solve an interference problem defeats the basic idea of microminiature circuits. However, since the technique of microminiature circuits makes available more circuitry per square inch, the opportunity is presented to utilize circuit techniques to solve many interference coupling problems.
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