Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
INTRODUCTION: A printed circuit board (PCB) IS a sheet of insulating material usually Bakelite with metallic circuitry photo chemically formed upon that material or substrate. On this sheet small holes are given for accommodating the diverse components of the circuit to be assembled. Interconnections between components are achieved by means of conducting paths (metallic conductor pattern) running path or through the substrate is called tracks. Tracks meet components to which they are to be linked through a larger conductor area known as land or pad. The electrical connection between a land and component‘s terminal is achieved by means of a solder joint. Every circuit has its own PCB but the process of manufacturing is more or less the same. First of all the Bakelite sheet of the proper size is taken. The whole sheet is covered with a copper strip on it; the circuit lines are drawn and covered with an enamel layer. After the paint is dried up into solution of ferrite chloride with few drops of hydrochloric acid (HCl). The copper (except the painted portion) is dissolved in the solution later on; this paint is cleaned off by petrol or kerosene. On this copper strip, holes are provided to accommodate the components. To protect from dampness, the copper strips are covered with a layer of varnish.
ADVANTAGES OF PCB: The copper strips over the PCB serve the purpose of the wires hence much wire is saved. Circuit charactistics can be maintained without introducing variation in inter-circuit capacitance. Mass production can be attained at lower cost. Inspection time is decreased as probability of error is removed. As the components are tightly fixed and therefore risk of short circuiting is minimised.
sho many examples
What is the appropriate assignment for this particular topic?
Potential barrier One either side of the junction, the region ‘D' becomes free from mobile charge carriers. That is on n-type side of D, no free electrons exist and on p-type s
Explain the terms 'Magnetic Dip' and 'Magnetic Declination' with the help of relevant diagrams.
Hi Do you have expert can help me to solve coupl problems from classical electrodynamics Jackson ch11 and ch12
Particle function: Protons The number of protons in an atom determines the kind of material: Eg. Hydrogen 1 proton Helium 2 protons Lithium 3 protons B
Find Cp for any substance in terms of V, T, P and S. Hint: How is C p related to (∂s/∂T) p ?
Step to improve Power Factor By using static capacitor: Static capacitor is generally used to get better the power factor of the power system. As the capacitor draws leadi
What is Wheatstone bridge? Assume the condition for which Wheatstone bridge is balanced.
The number of electrons in an atom of an element is equal to its: (1) Atomic weight (2) Atomic number (3) Equivalent weight (4) Electron affinity Ans: Atomic weigh
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd