We deliver value-added services that enable companies to manage, improve, and grow their businesses.
We offer the complete sheetmetal manufacturing solution, from single part or sub-assembly to turnkey solutions for mechanical and electrical assemblies. With years of manufacturing experience, we have developed an expertise that deliver the finest quality and service.
P&A has the expertise and facilities to custom manufacture a full range of transformers and toroids to your specification. We can design and deliver transformers to your requirements. Take advantage of our expertise and competitive pricing from China.
P&A offer a range of aluminium die casting services to suit clients needs predominately working with high quality aluminum enclosures and components. The fact that we are China based company enables us to deliver aluminum parts and components at most competitive pricing.
Our PCBA-based product manufacturing handles a wide range of assemblies, from single PCB assemblies to PCBAs integrated into enclosures. We support high and low PCBs for volumes and cover the entire life cycle of electronic products – from development and introduction, through to growth and maturity and end-of-life phases.
We designed and manufacture a wide variety of thermal solutions for various applications. Our products include U-type heat sinks, extruded heat sinks, cold forged heat sinks, stacked and folded fin heat sinks, heat pipes and heat pipe integrated solutions, TEC's, conduction cooling solutions and more.
Resources
Below is a summary of useful documents, images and links. Those been accumulated over the time and are result of the research in corresponding fields by P&A.
Quarter Wave Tube - a resonator used most commonly on air intake systems to reduce resonance. Works over a narrow frequency range, i.e. used to attenuate a specific frequency. The quarter wave tube is open at the end that connects with the air inlet pipe and closed at the other end. The frequency at which the quarter wave tube attenuates is controlled by the length of the quarter wave tube. The maximum attenuation is achieved when the cross-section of the quarter wave tube matches that of the main duct. The quarter wave tube, as per the title, a quarter of a wavelength long. The total distance that the acoustic wave travels is half a wavelength. Therefore, in the time taken for the acoustic wave to travel down the quarter wave tube and back to the main duct the acoustic wave in the main duct has moved along half a wavelength. The following link shows diagram and the operation of the quarter wave tube. Periodic Table of Elements Sorted by Thermal Conductivity Link below is for Calculators and Simulation Tools offered by University of Waterloo.
Thermal Fluid Properties Calculator
Section Properties Selected Shapes
Periodic Table of Elements Sorted by Thermal Conductivity
P&A Electronic Components Range
P&A Membrane Switch Document
Titanium Products Range
Heat Sink Performance Simulation software