PCB DESIGNING USING PCB WIZARD

PCB DESIGN USING PCB WIZARD AJAI NEGI 7EC1OVERVIEW:1.Introduction to PCB 2.Types of PCB3.Schematics design of circuit using PCB Wizard4.Layout design using PCB Wizard5.PCB fabrication 6.Advantages of PCB over bread board

INTRODUCTION TO PCB:A PCB is used to connect electronic components electrically. This is done by making conductive path ways for circuit connections by etching tracks from copper sheet laminated onto a non-conductive substrate.It is also referred to as printed wiring board (PWB) or etched wiring board.TYPES OF PCB1.Single Sided PCB2.Double Sided PCB3.Multilayer PCBSingle Sided PCB-Single-sided PCB means that wiring is available only on one side of the insulating substrate. Double Sided PCB-Double-sided printed circuit boards have wiring patterns on both sides of the insulating material.

Multilayer PCB-A multilayer PCB board is used in situations where the density of connections needed is too high to be handled by two layers.PCB WizardPCB Wizard is a powerful package for designing single-sided and double-sided printed circuit boards (PCBs). Schematic design of circuit using PCB Wizard:Schematic design is a way of designing a circuit on PCB Wizard.Adding components:

2. Changing component values and models

PCB layoutPCB layout is used to print the layout on original PCB using fabrication process.There are two procedure of layouting a design using PCB Wizard.Auto Routing:

Drawbacks of auto routing:1.It is automatic so if there is any problem arises we can not correct it.2.If we want to design the PCB in systematic way it is not possible with auto routing.3.We cannot adjust the size of PCB.4.We cannot remove the jumpers. Manual Routing:The following steps are involved in PCB design using manual routing in PCB wizard:Step 1: Open the PCB wizard.Step 2: Take a circuit board from toolbar.Step 3: Drag the components like resistor, capacitor etc into circuit board which we want from PCB component gallery.Step 4: Using zoom we can easily make layout.Step 5: To join two components take a copper track from toolbar. For selecting various components we have to follow various paths:Insert->PCB component1. Resistor: passive component->resistor 2. Capacitor: passive component->capacitor3. Switch: input component->switch4. LED: output component->LED (standard)

PCB FABRICATION:We use the glossy paper fabrication technique :Print the circuit design on PCB using hot iron. For this purpose special type of paper is used.

PCB Fabrication ProcessPCB Etching Process :Etching process has to be done to remove unnecessary copper after applying a temporary mask, leaving only the desired copper traces. Dip the PCB inside the ferric chloride or hydrochloric solution and keep it moving inside. Take it out at times and stop the process as soon as the copper layer has gone.

PCB Drilling

Drilling is done in PCB using drilling machine and small holes are done carefully.

Original fabricated PCB:

Advantages of PCB over Bread-board1.We can get a much higher density board with PCB.2.We will find the PCB design to be more reliable than the one made on a bread board.3.The circuit will look neat without any wires popped up and will not fall apart.4.We can have very precise control over the circuit component we are using, and we can comfortably fit in odd shaped components that are difficult to fix on a bread board.THANK YOU