GUIDELINES FOR ENVIRONMENTALLY SOUND MANAGEMENT OF E-WASTE (As approved vide MoEF letter No. 23-23/2007-HSMD dt. March 12‚ 2008) MINISTRY OF ENVIRONMENT & FORESTS CENTRAL POLLUTION CONTROL BOARD Delhi MARCH‚ 2008 TABLE OF CONTENTS EXECUTIVE SUMMARY Chapter 1 INTRODUCTION 1.0 Preamble 01 1.1 E-Waste 01 1.2 Environmentally Sound Management of E-waste 01 Chapter 2 OBJECTIVE & SCOPE OF THE GUIDELINES 2.1 Objective 02 2.2 Scope 02
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convection oven. Comparisons of the electronic assemblies to an industrial IPC standard illustrated that it is possible to develop a circuit‚ which is deemed acceptable under this standard. It can be concluded therefore that a screen printed conductive ink pattern‚ when printed on a degradable substrate can offer a viable alternative to current printed circuit boards and can be manufactured using existing technology and manufacturing processes. 2 Optimisation for Surface Mount Placement Machines
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manufactured printed circuit boards to the specifications of a variety of electronics manufacturers. Each board consisted of a thin sheet of insulating material with narrow metal strips (conductors) bonded to its surface. The insulating sheet acted as a structural member and supported electronic components connected by the conducting strips. In the customer’s plant‚ assemblers (human and/or automated machinery) positioned electronic components in the predrilled holes in the board‚ soldered them into
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2.3 Voltage Regulator LM7805 24 2.4 Relay 24 2.5 Magnetic Solenoid 25 2.6 Light Emitting Diode 26 2.7 Resistor 26 2.8 Crystal Oscillator 27 2.9 Transistor 28 2.10 Switch (button) 28 CHAPTER 3 29 HARDWARE DESIGN 29 MAIN CIRCUIT SCHEMATIC DESIGN 30 HARDWARE CONSTRUCTION PROCESS 31 CHAPTER 4 33 SOFTWARE DESIGN 33 INTRODUCTION 33 FLOWCHART 34 CODING WITH EXPLAINATION OF THE PROGRAM 35 EXPLAINATION OF THE PROGRAM 41 CHAPTER 5 42 TESTING AND DEBUGGING 42 Hardware
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Step 2: The Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Step 3: Putting the circuit in a box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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making process: modelling and simulation‚ computer-aided design‚ and computer-aided manufacture. Modelling and simulation Electronic circuits can be modelled in real life using a prototyping board - also known as a breadboard. However‚ this can be time consuming and uses real components‚ which can be damaged. Computerised simulation software can be used to test circuits without the need to physically build them. In addition‚ the computer simulation can be saved and edited. Simulation software can also
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Scrolling LED Message Display Progress Report ECET 497 Eric Walb Keywords: LED Array LED Modules Microcontroller/Arduino I hereby submit this report and the accompanying project as my own work and give the ECET department permission to have this report made available to other students for reference. Abstract. In recent years‚ LED message displays have become a popular and creative way to display messages to any audience. In many cases animations are added to the message being
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1) Introduction 1.1) Purpose Various schematic symbols and diagrams are familiarized and a schematic is a collection of electronic symbols connected together with virtual “wires”. When fabricating a printed circuit board (PCB)‚ a schematic is needed to provide input (a netlist) to the layout and routing tool (Varteresian‚ 2002). In other words‚ the capture of a schematic diagram is a convention to PCB‚ subsequent construction and testing. The design of PCBs is
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PR25 RFID Door Lock Version 1.0 October 2009 Cytron Technologies Sdn. Bhd. Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Cytron Technologies Incorporated with respect to the accuracy or use of such information or infringement
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Systems has a network of component suppliers‚ distributors‚ and contract manufacturers that are linked through Cisco’s extranet. When a customer orders a Cisco product at Cisco’s Web site‚ the order triggers contracts to manufacturers of printed circuit board assemblies when appropriate and alerts distributors and component suppliers. Cisco’s contract manufacturers are aware of the order because they can log on to Cisco’s extranet and link up with Cisco’s own manufacturing execution systems. What are
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