单词 | Printed circuit |
例句 | 1 The brain is not a printed circuit board. 2 Fig 5. Printed circuit board component layout and full size copper foil master pattern for the Tie Pulser. 3 Printed circuit boards can now be completed in a single pass with assembly involving only two board components. 4 Sensitive Approach Fortunately it is possible to produce printed circuit boards using a readily available light-sensitive process. 5 Generally, however, printed circuit boards will be protected, through their preparatory drawings,[] by copyright. 6 The printed circuit board has appurtenant reliefs. 7 A replaceable printed circuit board. 8 Applicable to the printed circuit board film of protection. 9 A printed circuit connector contact. 10 PRODUCT USE: Flexible printed circuit Boards. 11 The amplifier can be detached from a printed circuit board by means of the integrated plug strip. 12 Be suitable in the field of printed circuit board, connector and semiconductor. 13 A printed circuit board having light emitting diodes and a diode rectifier bridge mounted thereon is retained in a recess formed in the base portion of the light reflector. 14 The magnetic steel, the magnetic sensor and the printed circuit board are sealed by a waterproof and anticorrosive technique, and a housing is processed by a color zinc-plating technique. 15 As printed circuit board, we'll call it the rigid printed circuit board. 16 Main materials of printed circuit board ( PCB ) substrate were macromolecule resins, which were typical viscoelastic materials. 17 Based on the avalanche effect, a kind of kilo-volt nanosecond pulsers has been designed, by using microwave PCB (printed circuit board). 18 A ( non - removable ) printed circuit board to which other ( remov able ) printed circuit boards connect. 19 We offer a masking tape required of a printed circuit board manufacturing process, the poly- imide tape required for various electric devices, and various kinds of tapes for a shield. 20 The effluent includes acids, alkalis and industrial solvents, many of them byproducts of making printed circuit boards. 21 Complete circuit diagram for the Quick Prom interface Fig. 4. printed circuit board component layout and full size copper foil master pattern. 22 Take off the cover and a single skilfully laid out, screened ground plane, printed circuit board is revealed. 23 A medium-sized cylindrical connector featuring quick bayonet coupling, crimp, solder, or printed circuit board termination. It offers seven mounting styles and ten shell sizes. 24 There is disclosed a dielectric antenna comprising a dielectric resonator mounted in direct contact with a microstrip transmission line formed on one side of a printed circuit board . 25 Printed circuit board comprising a holding device for retaining wired electronic components, method for the production of such a printed circuit board, and use thereof in a soldering furnace. 26 In system-on-chip (SoC) technology, on-chip oscillators eliminate the need for an external crystal oscillator circuit, reduce production cost and decrease printed circuit board size. 27 To calculate self and mutual inductance of coreless transformer in printed circuit board, The author offered a new method to calculate based on Neumann equation as well as testing process and circuit. 28 Method The modern Electronic Microelements is welded onto a printed circuit board. 29 The lighting device comprises at least a metal sleeve with a female thread, a printed circuit board, a LED, a microswitch, a spring electrode, a battery and a rear metal cover. 30 Continuity checks are typically performed on a variety of devices, including cable assemblies, printed circuit boards, and connectors, to ensure these components have a continuous path where desired. 31 Hardware circuit and printed circuit board of the electronic control unit ECU and internetworking ECU had been designed. 32 By building a high frequency model of electronic elements and printed circuit board in solid state relay(SSR), extracting its parameters, an accurate simulation model of SSR was obtained. 33 Measure the values of the resistances on this printed circuit board with the universal avo meter. 34 Patterning method, method of manufacturing organic field effect transistor,[] and method of manufacturing flexible printed circuit board. 35 Since it is a lead wire type device. it can be attached to printed circuit boards. the relay terminal boards. etc. ; it has a space saving shape; and it is highly economical. 36 Permits automatic mounting to printed circuit boards using a chip mounter. 37 Be suitable in the field of connector, printed circuit board and semiconductor. 38 Without hand-making and resistance adjustment, a new structure of air-core coil, based on printed circuit boards, is adopted by the transformer. 39 The characteristic of thermosetting polyphenylene oxide resin copper clad laminates as wel as their application in the high frequency printed circuit board is introduced. 40 The power rating is based on a printed circuit board heat spreading capability equivalent to 2 square inches of copper connected to the GND pins. 41 It's usually used in manufacturing - precision and multi - layer printed circuit board. 42 FIGURE 6. Within a spring contact system, the points of transfer are where the tip meets the target, where the barrel and plunger meet, and where the barrel meets the printed circuit board. 43 Pyrolysis waste recycling technology is one of the effective ways that recycle the printed circuit board. 44 The utility model relates to a socket for integrated components. The utility model is an improved structure which is convenient for printed circuit wiring and has scientific and reasonable wiring. 45 Nevertheless, Kef updated the software and fitted a new printed circuit board to upgrade the unit to the latest specification. 46 Suitable for medium multilayer printed circuit board, computer, communication equipment, OA equipment, lead-free PCB process etc. 47 SOLDERHOME is the industry's largest, most professional business website in china's printed circuit board assembly industry. 48 Being faced with the problems found in detection of printed circuit board assembly(PCBA) at present, a new method of PCBA detection which is economical, rapid and reliable is promoted. 49 It includes wiring of printed circuit board, electric capacity coupling, tolerance of digital circuit noise, and transmission line. 50 The invention relates to a printed circuit board (60) having an insulating support layer (61) and a layer (62) of conductive material applied thereto. 51 The latest developments of - halogen and - phosphorous flame - retarded epoxy resin for printed circuit boards were introduced. 52 For communication within a PCB (printed circuit board), common options include the serial peripheral interface (SPI) bus and inter-integrated circuit (I2C) bus. 53 The resistance of the copper rate is low, so in printed circuit board, used to prepare copper foil and double panel, produce multilayer prototypes via metallization copper with on the process. 54 The methods of surface mounting technology printed circuit board (SMT_PCB) image processing , SMT_PCB soldered joint type and location information automatic gaining were introduced in this paper. 55 Like the printed circuit board production enterprise, the practice and train room will produce the sullage which can endanger our environment. 56 The layout of a factory; the layout of a printed circuit. 57 Edge connector: A row of etched lines on the edge of a printed circuit board that is inserted into an expansion slot. 58 Low surface insulation resistance (SIR) of a printed circuit board (PCB) can degrade the performance of the circuits on the board considerably. 59 Experiments are demonstrated on printed circuit board, LTCC, and monolithic GaAs substrate. 60 The programmable digital devices implement the logical function by designed internal logic array block while the traditional digital systems do it by designed printed circuit block. 61 REENGINEERING THE ASSEMBLY PROCESSES OF PRINTED CIRCUIT BOARDS : A CASE STUDY? 62 With the development of Printed Circuit Board (PCB), liquid photo imageable etching resist ink had become the prime process technology of the fine line graph facture. 63 Waste printed circuit board(PCB) was pyrolyzed in a self-developed fixed bed batch vacuum pyrolyzer and the pyrolysis products were analyzed. 64 The protective technology of solder coat in production of multilayer printed circuit board is introduced. 65 These are usually implemented as traces on a printed circuit board. 66 Applies to fine lines, dot pattern,[] the manufacture of printed circuit board screen. 67 She a bench, examining a newly printed circuit board for errors in a huge magnifying glass. 68 The invention relates to a semiconductor component ( 1 ) for mounting on a printed circuit board . 69 PPI ( Ireland ) and metal printed circuit board of NRK ( Japan ). 70 Its business covers network communication, computer system integration, surface mounting technology, printed circuit boards, electricity meters, micro motors, and high frequency devices. 71 Polyamide-imide resin, metal-clad laminate using the same, overlay, flexible printed circuit board, and resin composition. 72 This dissertation mainly introduces parallel communication of a master-slave system of three_coordinate printed circuit board numerical control drilling and milling machine tool. 73 Printed circuit boards and wire wrap both contain specialized discussions of the EDA used for those. 74 Cyanate compound, the preparation of triazine copper clad panel and 1ts application in high frequency printed circuit board were introduced in this paper. 75 In editing operation, he treated words, design and printed circuit with earnest and particularity and daintily. 76 With the increase of integrated circuit switch rate and PCB(Printed Circuit Board) density, Signal Integrity(SI) has become one of main problems in high-speed design. 77 This module can show the contactor control schematic diagram and the electronic control circuit schematic diagram, printed circuit board drawing and element list. 78 The fabrication procedure of two kinds of microwave multilayer printed circuit board filled with ceramic particles is briefly introduced. 79 The near field coupling device may be formed, for example on a printed circuit board with a plurality of electrically interconnected traces and a ground plane. 80 Digital circuits ordinary have bus line configuration on printed circuit boards. 81 The double-faced printed circuit board production will produce a lot of wastes and waste water. The composition of these wastes is complicated. 82 The spectral of a DDS system is dependent on the phase noise of the clock source and the printed circuit board design. 83 At the same time, For the purpose of the micromation, low-power surface mounting components and double deck printed circuit board are employed. |
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