9.1 Vacuum Accessories
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
Ham Radio Magazine 1981
hamWWW.RADiOSCAMATORUL.Hi2.RO HincorporaORIZONSAM RADm ring radiomagazine CollinsWWW.GiURUMELE.Hi2.RO owners' report ..........22 digital frequency display ......... 28 tracking satellites. ...... .46 adding fm to your receiver ...74 converting surplus I nunications ?ology cavities I WWW.RADiOSCAMATORUL.Hi2.RO WWW.GiURUMELE.Hi2.RO WWW.RADiOSCAMATORUL.Hi2.RO WWW.GiURUMELE.Hi2.RO save stop I corn1 I n the rr when Switchlna antennas is ceasy with i Heathkit" SA- 1480 Rernc AMJIO WWW.RADiOSCAMATORUL.Hi2.RO WWW.GiURUMELE.Hi2.RO WWW.RADiOSCAMATORUL.Hi2.RO ,olume 14, number 3 1 T. H. Tenney. Jr.. WlNLB publisher and editor in chief I Alfred Wilson. W6NIF I editor-~ ~- 12 converting surplus ANIUPX-6 cavities Robert S. Stein, W6NBI editorial staff WWW.GiURUMELE.Hi2.ROManin Hantt. WBICHQ 18 DXer's Diary ~roductlonedltor I Joseph J Schroeder. WSJUV Bob Locher. W9KNI Leonard H. Anderson associate editors W.E Scarborough. Jr , KAIDXQ 22 Collins Owners' Reports: graphjc production manager I KWM-2 and KWM-2A Irene Holl~ngsworth editorial assostant Martin Hanft, WBlCHQ Wayne Pierce, K3SUK cover 28 digital frequency display for publishing staff single-conversion transceivers J. Cra~gClark. Jr . NlACH Everett L. Beall, K6YHK assistant publ~sherand adVeRlsing manager Susan Shorrock 34 ham radio techniques c!rculation manager Bill Orr. W6SAI hem radio magazlne 13aubl~shed monthlv bv I 38 genesis of a synthesizer Ken Grant, VE3FIT subscription rates I 44 CW anyone7 Harry W. Lewis, WJWJ 1WI da ant 46 tracking satellites in elliptical orbits ;hree;ears, 544 00 Paul C. Bunnell, WA6VJR Europe. Japan. Afrlca lvla A8r Forwardlns Serv~celone vear. $28 W 52 protection for your solid-state devices Henry H. -
Connector Contents
Connector Contents 1 Phone connector (audio) 1 1.1 Other connectors, other terms .................................... 1 1.2 Modern connectors .......................................... 1 1.2.1 Tiny telephone ........................................ 2 1.2.2 Less common ......................................... 2 1.3 Mono and stereo compatibility .................................... 3 1.4 Uses .................................................. 3 1.4.1 Computer sound ....................................... 5 1.4.2 Recording equipment ..................................... 6 1.4.3 Mobile phones ........................................ 7 1.4.4 Aircraft headsets ....................................... 8 1.5 Switch contacts ............................................ 8 1.6 Design ................................................ 9 1.6.1 Balanced audio ........................................ 10 1.6.2 Unbalanced audio ...................................... 10 1.7 See also ................................................ 11 1.8 References .............................................. 11 2 Edge connector 12 2.1 Socket design ............................................. 12 2.2 Uses .................................................. 12 2.3 See also ................................................ 12 2.4 References .............................................. 12 3 DIN connector 13 3.1 Circular connectors .......................................... 13 3.2 Loudspeaker connector ........................................ 14 3.3 Applications ............................................. -
RF and Microwave Coaxial Cable and Connectors
University of Washington Electrical Engineering & Agilent Technologies RF Laboratory RF and Microwave Coaxial Cable and Connectors Routing of RF and microwave signals with minimum loss and minimum reflections requires controlled impedance lines and connectors. This requires significantly more engineering effort than the simple point-to-point wiring of low frequency electronics. Once off of a printed circuit board, the most common transmission line for RF and microwave signals is the coaxial cable. These are also the standard means for getting signals into and out of various instruments and subassemblies. Connectors for coaxial cables also play a critical role, since they must maintain the controlled impedance of the transmission line while still providing connect and disconnect service. Coaxial Cable The most critical electrical parameters for specifying coaxial cable are: (1) the characteristic impedance Z0, (2) the loss or attenuation per unit length α, and (3) the voltage breakdown strength BV. In addition, there are the mechanical parameters of outside diameter d0, tensile strength, and minimum bend radius. The characteristic impedance of a coaxial cable, or any other transmission line, fundamentally gives the ratio of the electric to magnetic field strength of an electromagnetic wave propagating along the line. For a coaxial cable, the characteristic impedance is related to the inside and outside radii of the dielectric, a and b, respectively, and the permittivity ε and permeability μ of the dielectric material, 1 376.7 Z0 ln b a ln b a . 2 2r The circuit parameters per unit length of the coaxial cable are RS 11 R /m, L ln b a H/m, 22ab 22 GC S/m, F/m.