Calculations of signal length mismatch and trace length for printed circuit board [PCB] design

2017 ◽  
Author(s):  
U Jagan Mohan ◽  
R. Muthaiah
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Trace Length ◽  
Printed Circuit ◽  
Pcb Design

Experimental Study on PCB Micro Drilling Force

2012 ◽  
Vol 246-247 ◽  
pp. 1017-1021 ◽  
Author(s):  
Feng Gong ◽  
Bai Qiang Chen ◽  
Ji Bin Li
Keyword(s):  
Experimental Study ◽  
Cutting Force ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Drilling Machine ◽  
Drilling Force ◽  
Printed Circuit ◽  
Market Competitiveness ◽  
Pcb Design ◽  
Micro Drilling

With the development of high density, multi-functions, miniaturization and multi-layer on printed circuit board (PCB) design, great challenges have been presented to the miniaturization of drilling on PCB. In order to meet the hole precision, quality and improve the performance, efficiency of mechanical drilling, further research should be done on the cutting state. Kistler high-precision micro-force platform was used in this paper to test and analyze the cutting force, investigate the general laws of micro drilling, and optimize the parameters for HANS PCB drilling machine. Thereby, to improve the efficiency and precision of the drilling, range of processing, and increasing market competitiveness.

scholarly journals The Development of a Modified Design Chain Operations Reference Model in New Product Development of the Printed Circuit Board: A Case Study

2020 ◽  
Vol 10 (11) ◽  
pp. 3703
Author(s):  
Ping-Shun Chen ◽  
Jimmy Ching-Ming Chen ◽  
Wen-Tso Huang ◽  
Li-Yin Kuo
Keyword(s):  
Product Development ◽  
New Product Development ◽  
Printed Circuit Board ◽  
Reference Model ◽  
New Product ◽  
Circuit Board ◽  
Future Research ◽  
Printed Circuit ◽  
Design Chain ◽  
Pcb Design

New product development (NPD) is a process of interactions among multiple parties. With stronger competition in the electronic product market, reducing NPD cycle time has become a common important subject in the information technology (IT) industry. The main topic of this research is process improvements in the research and development (R&D) department of the case company by studying how product competitiveness can be enhanced in the current rapid proceeding technology industry. The process-oriented and hierarchical structure is used to analyze the processes of a new printed circuit board (PCB) design and test, and then a modified design chain operations reference (DCOR) model is introduced to explore problems and suggest corresponding solutions. This research also specifies a clear design chain structure for the case firm and improves its R&D process by brainstorming. The goal is to increase the case firm’s PCB design chain efficiency by shortening the delivery time and reducing the problems of risks arising during the NPD. Finally, this research reviews the essence of the design chain management, draws conclusions, and points out directions for future research.

scholarly journals Modified Power Factor Correction (PFC) Control and Printed Circuit Board (PCB) Design for High-Efficiency and High-Power Density On-Board Charger

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 605
Author(s):  
Jaeil Baek ◽  
Moo-Hyun Park ◽  
Taewoo Kim ◽  
Han-Shin Youn
Keyword(s):  
Power Density ◽  
Power Factor ◽  
High Power ◽  
Printed Circuit Board ◽  
High Efficiency ◽  
Power Factor Correction ◽  
Circuit Board ◽  
High Power Density ◽  
Printed Circuit ◽  
Pcb Design

This paper presents a modified power factor correction (PFC) ON/OFF control and three-dimensional (3D) printed circuit board (PCB) design for a high-efficiency and high-power density onboard charger (OBC). By alternately operating one of two boost modules of the PFC stage at a 50% or less load condition, the proposed PFC control can reduce the load-independent power loss of the PFC stage, such as core loss and capacitor charging loss of switches. It enables OBCs to have high efficiency across a wide output power range and better thermal performance. The 3D-PCB design decouples a trade-off relationship of the PCB trace design and heat spreader design, increasing the power density of OBCs. A 3.3 kW prototype composed of an interleaved totem-pole bridgeless boost PFC converter and full-bridge (FB) LLC converter has been built and tested to verify the proposed PFC control and 3D-PCB effectiveness design. The prototype has 95.7% full power efficiency (98.2% PFC stage efficiency) and 52 W/in3 power density.

scholarly journals A low-cost printed circuit board design technique and processes using ferric chloride solution

2021 ◽  
Vol 39 (4) ◽  
pp. 1223-1231
Author(s):  
C.T. Obe ◽  
S.E. Oti ◽  
C.U. Eya ◽  
D.B.N. Nnadi ◽  
O.E. Nnadi
Keyword(s):  
Ferric Chloride ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Metal Plate ◽  
Circuit Board ◽  
Work Piece ◽  
Time Interval ◽  
Design Technique ◽  
Printed Circuit ◽  
Pcb Design

This paper presents a low-cost printed circuit board (PCB) design technique and processes using ferric chloride (𝑭𝒆𝑪𝒍𝟑) solution on a metal plate for a design topology. The PCB design makes a laboratory prototype easier by reducing the work piece size, eliminating the ambiguous connecting wires and breadboards circuit errors. This is done by manual etching of the designed metal plate via immersion in ferric chloride solutions for a given time interval 0-15mins. With easy steps, it is described on how to make a conventional single-sided printed circuit board with low-cost, time savings and reduced energy from debugging. The simulation and results of the printed circuit is designed and verified in the Multisim software version 14.0 and LeCroy WJ35Aoscilloscope respectively. Keywords: Etching, Ferric Chloride, Insertion, Multisim, Metal Plate, Printed Circuit Board 

Characteristics of Radiated Emission from a Printed Circuit Board with a Slit

2012 ◽  
Vol 132 (6) ◽  
pp. 404-410 ◽  
Author(s):  
Kenichi Nakayama ◽  
Kenichi Kagoshima ◽  
Shigeki Takeda
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit ◽  
Radiated Emission
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