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Pressfit Technology
Pressfit Technology

... During the press-in process, it is essential that both the PCB and connector insulation body are not placed under excessive stress, otherwise damage may occur. It is recommended that a space distance of 0.05 - 0.1mm is maintained between the connector and the PCB. In every case, to ensure optimum ef ...
AN117 - DC/DC uModule Regulator Printed Circuit Board Design Guidelines
AN117 - DC/DC uModule Regulator Printed Circuit Board Design Guidelines

... point to any other point is negligible. This is not actually true, especially from the thermal perspective, but using vias is a simple and inexpensive way of achieving a design whose performance approaches this ideal. Figure 6 shows a layout example with interconnect vias on the VIN, VOUT and GND pl ...
Glossary
Glossary

c30rlybd.pdf
c30rlybd.pdf

... To mount the relay board directly under the tone stack you need to cut off about 1/4" from the top of the mini-board (the top is the side that doesn't say "Radio Shack"). As mentioned earlier, these boards are not symmetrical vertically so make sure you get it right or the circuit will NOT work. You ...
Chapter 20jeopardy
Chapter 20jeopardy

... Atoms are usually electrically neutral because ….. ...
Speed Checker for Highways
Speed Checker for Highways

... blocking it in the other direction. Power diodes are used in concerting AC into DC. In this, current will flow freely during the first half cycle (forward biased) and practically not at all during the other half cycle (reverse biased). This makes the diode an effective rectifier, which convert ac in ...
ELECTROCHEMISTRY PURDUE UNIVERSITY INSTRUMENT VAN
ELECTROCHEMISTRY PURDUE UNIVERSITY INSTRUMENT VAN

... battery), the two cells must be united using a salt bridge between the two solutions, and an external circuit between the two electrodes. When all of these components are assembled, nothing perceptible is observed. Once a voltmeter is placed in the circuit between the two metal electrodes, an electr ...
MICRO-TRAK 300 MANUAL VER 1.4.1
MICRO-TRAK 300 MANUAL VER 1.4.1

Lab #1: Ohm`s Law (and not Ohm`s Law)
Lab #1: Ohm`s Law (and not Ohm`s Law)

... • When wiring a circuit, use black wires only for portions of the circuit at ground. • When wiring the circuit, first wire everything except the scope. Add it last. • Be sure scope is DC coupled (AC coupling adds an extra capacitor, beyond the one you want to measure) • Make sure CH1 and CH2 are on ...
Design Project - Purdue Engineering
Design Project - Purdue Engineering

... However, the involvement of moving parts, a high voltage power supply and small components pose some ethical issues that need to be addressed. We will take a variety of measures. The following is an analysis of the major concerns: A. The high voltage power supply 1. Issue: The high voltage power sup ...
Electrical fundamentals for automotive systems a
Electrical fundamentals for automotive systems a

... electricity as it relates to automotive applications vehicle electrical circuits and wiring systems ...
NUP4103FC Four Channel ESD Array
NUP4103FC Four Channel ESD Array

ECE 300
ECE 300

MultiSim for 2010
MultiSim for 2010

... The workspace switches to Autorouter Mode and trace autorouting begins As autorouting proceeds, you will see traces being placed on the board When autorouting is complete, Autorouter Mode closes and you are returned to the workspace The autorouter can be stopped at any time and you can make manual c ...
Stat 330 (Spring 2015): Homework 4
Stat 330 (Spring 2015): Homework 4

... Show all of your work, and please staple your assignment if you use more than one sheet. Write your name, the course number and the section on every sheet. Problems marked with * will be graded and one additional randomly chosen problem will be graded. 1. * When circuit boards used in the manufactur ...
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Homework

Schematic Diagrams - Oregon State EECS
Schematic Diagrams - Oregon State EECS

... A schematic diagram is a concise, symbolic description of an electrical circuit. It specifies the elements that make up an electrical circuit and how they are connected. Schematic diagrams form one of the basic languages of electrical engineering. On a schematic, there may be many parts which are id ...
a survey and tutorial of dielectric materials used in
a survey and tutorial of dielectric materials used in

... must be made that just achieve performance requirements without adding extra cost. An exception to the above for digital PCBs occurs when layer counts become extremely high as often occurs with supercomputer products. In order to keep the overall PCB thickness within reasonable limits and still achi ...
a survey and tutorial of dielectric materials used in
a survey and tutorial of dielectric materials used in

... must be made that just achieve performance requirements without adding extra cost. An exception to the above for digital PCBs occurs when layer counts become extremely high as often occurs with supercomputer products. In order to keep the overall PCB thickness within reasonable limits and still achi ...
Slides - University of Hawaii
Slides - University of Hawaii

... Nevertheless, we could change them to save space. Whether this matters depends greatly on HV cable routing at back of module... • ‘Baseline’: Molex # 79107-7010 on HVB, Molex # 87759-2250 on front board, half the pins pulled from each. • Similar but smaller and simpler: Samtec # SMM-111-01-S-D on HV ...
1100_T1_13-4_lab3_electronicsII_manual
1100_T1_13-4_lab3_electronicsII_manual

... Soldering flux (a kind of wax like material) is needed to allow the molten solder to "wet" the surfaces being jointed. It is usually not necessary to apply flux separately as a solder wire already provides flux inside the wire. a) Tinning. It is recommended to run solder onto all wires, tags, termin ...
Team May12-05 Chendong Yang Mengfei Xu Advisor
Team May12-05 Chendong Yang Mengfei Xu Advisor

Electrical fundamentals for automotive systems
Electrical fundamentals for automotive systems

... voltage drops ...
A Custom built UHF to VHF downconverter
A Custom built UHF to VHF downconverter

... input of the mixer and IF output. Additional Low pass and high pass networks at the IF is used to improve selectivity more especially if no filtering is found on the 2m receiver. ...
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Printed circuit board



A printed circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate. PCBs can be single sided (one copper layer), double sided (two copper layers) or multi-layer (outer and inner layers). Multi-layer PCBs allow for much higher component density. Conductors on different layers are connected with plated-through holes called vias. Advanced PCBs may contain components - capacitors, resistors or active devices - embedded in the substrate.FR-4 glass epoxy is the primary insulating substrate upon which the vast majority of rigid PCBs are produced. A thin layer of copper foil is laminated to one or both sides of an FR-4 panel. Circuitry interconnections are etched into copper layers to produce printed circuit boards. Complex circuits are produced in multiple layers. Printed circuit boards are used in all but the simplest electronic products. Alternatives to PCBs include wire wrap and point-to-point construction. PCBs require the additional design effort to lay out the circuit, but manufacturing and assembly can be automated. Manufacturing circuits with PCBs is cheaper and faster than with other wiring methods as components are mounted and wired with one single part. Furthermore, operator wiring errors are eliminated.When the board has only copper connections and no embedded components, it is more correctly called a printed wiring board (PWB) or etched wiring board. Although more accurate, the term printed wiring board has fallen into disuse. A PCB populated with electronic components is called a printed circuit assembly (PCA), printed circuit board assembly or PCB assembly (PCBA). The IPC preferred term for assembled boards is circuit card assembly (CCA), and for assembled backplanes it is backplane assemblies. The term PCB is used informally both for bare and assembled boards.The world market for bare PCBs reached nearly $60 billion in 2012.
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