Download or read book Crystal Oscillator Design and Temperature Compensation written by Marvin Frerking and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crystal oscillators have been in use now for well over SO years-one of the first was built by W. G. Cady in 1921. Today, millions of them are made every year, covering a range of frequencies from a few Kilohertz to several hundred Mega hertz and a range of stabilities from a fraction of one percent to a few parts in ten to the thirteenth, with most of them, by far, still in the range of several tens of parts per million.Their major application has long been the stabilization of fre quencies in transmitters and receivers, and indeed, the utilization of the frequency spectrum would be in utter chaos, and the communication systems as we know them today unthinkable,'without crystal oscillators. With the need to accommodate ever increasing numbers of users in a limited spectrum space, this traditional application will continue to grow for the fore seeable future, and ever tighter tolerances will have to be met by an ever larger percentage of these devices.

Download or read book Routledge Dictionnaire Technique Anglais written by Yves Arden and published by Psychology Press. This book was released on 1994 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: The French-English volume of this highly acclaimed set consists of some 100,000 keywords in both French and English, drawn from the whole range of modern applied science and technical terminology. Covers over 70 subject areas, from engineering and chemistry to packaging, transportation, data processing and much more.

Download or read book Routledge French Technical Dictionary Dictionnaire technique anglais written by Yves Arden and published by Routledge. This book was released on 2013-01-11 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: The French-English volume of this highly acclaimed set consists of some 100,000 keywords in both French and English, drawn from the whole range of modern applied science and technical terminology. Covers over 70 subject areas, from engineering and chemistry to packaging, transportation, data processing and much more.

Download or read book A Temperature Compensated SC Cut Quartz Crystal Oscillator written by Edward K. Miguel and published by . This book was released on 1982 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method of temperature compensating a pullable Sc Cut quartz crystal is presented. The B and C modes of the SC Cut are resonated simultaneously. The B mode is used as a temperature sensor which has a linearity of -25 ppm/degrees C. The C mode is compensated using the temperature information from the B mode. A dual mode oscillator is developed which allows the frequency of the C mode to be controlled without affecting the B mode. A digital compensation method uses a RAM for on board information storage and programming. The address to the RAM is temperature generated and the output of the RAM is converted to a voltage to control the C mode oscillator. The compensation information is programmed automatically, during a temperature slew of 1.5 degrees C/min., using a phase-locked-loop, an up/down counter and a track-and-hold circuit all of which are connected to the oscillator only during the programming step.

Download or read book Quartz Crystal Oscillator Circuits Design Handbook written by D. Firth and published by . This book was released on 1965 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: The object of this handbook is to assemble a set of design methods for crystal oscillators in the frequency range of 1 KC to 200 MC with the aim of facilitating design, eliminating crystal unit misapplications, and reducing design costs. The handbook is not directed at the design of ultra-stable crystal oscillators, but rather at the non-temperature controlled, medium frequency stability oscillator commonly in use in many types of communications equipment. The handbook contains discussions of: (1) The electrical characteristics of crystal units, condition of usage, and methods of measurement. (2) Characteristics of tube and transistor amplifiers. (3) Characteristics of impedance transforming networks. (4) Detailed design information on series resonance and anti-resonance oscillators. (5) Design examples together with experimental evaluation data covering most of the 1 KC to 200 MC range. (Author).

Download or read book Proceedings written by and published by . This book was released on 1956 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Development of Frequency Temperature Compensated Quartz Crystal Oscillator 0 1227 u written by C. D. DOMINQUEZ and published by . This book was released on 1965 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for ovenless quartz crystal oscillators having a deviation less than plus or minus 0.75 parts per million from an absolute frequency over all service conditions, including crystal aging, has been evident for modern communications systems. Knowledge derived from studies on frequecy temperature compensation techniques indicated the feasibility of developing compensated oscillators providing a reduction in both required input power and size over conventional oscillator-oven assemblies. The object of Phase I of this program was to design and fabricate seven exploratory development oscillator models employing such compensation techniques to achieve a frequency stability of less than plus or minus 0.5 ppm over the temperature range of -40C to +65C. This effort was reported in the Phase I Interim Report under this contract. After evaluation of these exploratory models, 18 advanced models were designed and fabricated under Phase II of this program with the same stability over 140C to +75C. This report covers the effort expended and the results obtained during Phase II of this program. The discussion in this report is related to (1) description and test of the Phase II oscillators, (2) design considerations in formulation of Phase II design, (3) component standardization, and (4) overall conclusions and recommendations for this program. (Author).

Download or read book Cumulative Index to Contemporary Acoustical Literature Listed in the Journal of the Acoustical Society of America Volumes 36 44 1964 1968 written by Acoustical Society of America and published by . This book was released on 1971 with total page 1116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ETUDE D UN OSCILLATEUR THERMOSTATE A QUARTZ A ONDES DE SURFACE written by PATRICK.. LEBLOIS and published by . This book was released on 1990 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE DEVELOPPEMENT DES APPLICATIONS TEMPS-FREQUENCE DANS LES DOMAINES MILITAIRES, SPATIAUX ET DES TELECOMMUNICATIONS NECESSITE DES SOURCES HAUTE FREQUENCE DE GRANDE PURETE SPECTRALE ET DE GRANDE STABILITE DANS LE TEMPS. L'ETUDE D'UN OSCILLATEUR A QUARTZ A ONDES DE SURFACE THERMOSTATE, DE TYPE PILOTE, MINIATURISE ET FONCTIONNANT A LA FREQUENCE DE 480 MHZ A ETE EFFECTUEE. CETTE ETUDE COMPREND: 1) LA CARACTERISATION DU RESONATEUR A ONDES DE SURFACE A QUARTZ (FABRIQUE PAR THOMSON SINTRA); 2) LA MISE AU POINT DE L'ELECTRONIQUE DE L'OSCILLATEUR ET DU THERMOSTAT; 3) L'ANALYSE DES CARACTERISTIQUES DE STABILITE, DE PURETE SPECTRALE ET DE TENUE A L'ENVIRONNEMENT DE L'OSCILLATEUR. LE RESONATEUR A ONDES DE SURFACE A 480 MHZ EST FERME SOUS VIDE AVEC UN BOITIER TOUT QUARTZ. UN SUPPORT A ETE CONCU AFIN DE MESURER SES PARAMETRES DE MANIERE PRECISE ET REPETITIVE, SANS L'ENDOMMAGER. L'ELECTRONIQUE DE L'OSCILLATEUR, COMPORTANT UN AMPLIFICATEUR DE BOUCLE A GAIN AJUSTABLE, UN DEPHASEUR, UN COUPLEUR DIRECTIONNEL ET UN AMPLIFICATEUR D'ISOLATION DE SORTIE A ETE ETUDIE AVEC LA TECHNOLOGIE DES CIRCUITS HYBRIDES; LE THERMOSTAT EST INTEGRE DANS UN CIRCUIT PREDIFFUSE. LA CARACTERISATION EXPERIMENTALE DE CET OSCILLATEUR A ETE EFFECTUE AUSSI BIEN PAR SA SENSIBILITE AUX PERTURBATIONS EXTERIEURES (TEMPERATURE, PRESSION, ACCELERATION, VIBRATION) QUE PAR SES PERFORMANCES INTRINSEQUES (STABILITE A COURT ET LONG TERME, PURETE SPECTRALE). POUR CE FAIRE, DIFFERENTES METHODES DE MESURE ADAPTEES A CE TYPE D'OSCILLATEUR ONT ETE ETUDIEES. NOUS AVONS NOTAMMENT DEVELOPPE UN BANC DE MESURE DE BRUIT DE PHASE PAR MULTIPLICATION DE FREQUENCE. CE DERNIER PERMET DE CARACTERISER DES OSCILLATEURS DONT LA FREQUENCE DE FONCTIONNEMENT EST DISPERSEE AINSI QUE DES OSCILLATEURS NON COMMANDABLES EN TENSION

Download or read book French Dictionary of Information Technology written by Terry Pyper and published by Routledge. This book was released on 2020-08-26 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given the recent advances in telecommunications and the fact that the French lead the field in many aspects of information technology, this will be a valuable tool for students, translators and interpreters. The author has himself worked for a number of years as a technical translator and the dictionary reflects his knowledge and practical experience. 30,000 entries in each language cover terminology used in telecommunications, electronics and computer science, and developments in related disciplines such as the design and manufacture of printed circuits and components, installation, testing, maintenance and software programming.

Download or read book Microtecnic written by and published by . This book was released on 1955 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symposium written by International Astronomical Union and published by . This book was released on 1953 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impact of Charge Coupled Devices and Surface Acoustic Wave Devices on Signal Processing and Imager in Advanced Systems written by Y. Brault and published by Neuilly-sur-Seine, France : North Atlantic Treaty Organization, Advisory Group for Aerospace Research and Development. This book was released on 1978 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recueil Des Travaux de L assembl e G n rale written by and published by . This book was released on 1928 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Services for Family Planning and Infertility United States 1982 written by Gerry E. Hendershot and published by . This book was released on 1988 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1982 statistics on the use of family planning and infertility services presented in this report are preliminary results from Cycle III of the National Survey of Family Growth (NSFG), conducted by the National Center for Health Statistics. Data were collected through personal interviews with a multistage area probability sample of 7969 women aged 15-44. A detailed series of questions was asked to obtain relatively complete estimates of the extent and type of family planning services received. Statistics on family planning services are limited to women who were able to conceive 3 years before the interview date. Overall, 79% of currently mrried nonsterile women reported using some type of family planning service during the previous 3 years. There were no statistically significant differences between white (79%), black (75%) or Hispanic (77%) wives, or between the 2 income groups. The 1982 survey questions were more comprehensive than those of earlier cycles of the survey. The annual rate of visits for family planning services in 1982 was 1077 visits /1000 women. Teenagers had the highest annual visit rate (1581/1000) of any age group for all sources of family planning services combined. Visit rates declined sharply with age from 1447 at ages 15-24 to 479 at ages 35-44. Similar declines with age also were found in the visit rates for white and black women separately. Nevertheless, the annual visit rate for black women (1334/1000) was significantly higher than that for white women (1033). The highest overall visit rate was for black women 15-19 years of age (1867/1000). Nearly 2/3 of all family planning visits were to private medical sources. Teenagers of all races had higher family planning service visit rates to clinics than to private medical sources, as did black women age 15-24. White women age 20 and older had higher visit rates to private medical services than to clinics. Never married women had higher visit rates to clinics than currently or formerly married women. Data were also collected in 1982 on use of medical services for infertility by women who had difficulty in conceiving or carrying a pregnancy to term. About 1 million ever married women had 1 or more infertility visits in the 12 months before the interview. During the 3 years before interview, about 1.9 million women had infertility visits. For all ever married women, as well as for white and black women separately, infertility services were more likely to be secured from private medical sources than from clinics. The survey design, reliability of the estimates and the terms used are explained in the technical notes.

Download or read book Techniques d interf rom trie tr s grande base written by Centre national d'études spatiales (France) and published by Editions-Cepadues. This book was released on 1983 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sciences industries spatiales written by and published by . This book was released on 1971 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: