MATLAB is a numerical computing environment and programming language,maintained by the math works.MATLAB allow easy matrix manipulation,plotting of functions and data,implementation of creation of user interfaces,and interfacing with programs in other languages.MATLAB was first adopted by control design engineers algorithms,it is now also used in education.Simulink is an environment multidomain simulation and model based design for dynamic and embedded system.It provides an intractive graphical environment and a customizable set of block libraries that let you design,simulate,implement,and a test a variety of time-varying systems,including communications,controls,signal processing,video processing,video processing,and image processing.In particular the teaching of linear algebra and numerical analysis,and is popular amongest scientists involved processing.MATLAB is a “matrix laboratory”,and as such it provides many convenient ways for creating vectors,matrices,and a multi dimensional arrays.MATLAB has a large number of built -in functions,creating and working with model with simulink,you can quickly create,model,and maintain a detailed block diagram of your system using a comprehensive set of predefined blocks.simulink provides tools for hierarchical modelling,data management,and subsystem customization,making it easy to create concise,accurate representations,regardless of your system’s complexity.
1.A longer duration contact between soldering iron bit & components lead can exceed the temperature rating of device & cause partial or total damage of the device. hence before soldering we must carefully read the maximum soldering temperature & soldering time for device.
2.The wattage of soldering iron should be selected as minimum as permissible for that soldering place.
3.To pr0tact the device by leakage current of iron its bit should be earthed properly.
4.We should select the soldering wire with proper ratio of Pb & Tn to provide the suitable melting temperature.
5.Proper amount of good quality flux must be applied on the soldering point to avoid dry soldering.
Electromagnetic compatibility (EMC) is the branch of electrical sciences which encompass the unintentional generation,propagation and reception of electromagnetic energy with reference to the unwanted effects that such energy may induce.Electromagnetic interference or EMI is a disturbance that affects an electrical circuit due to either electromagnetic induction or electromagnetic radiation emitted from an external source .it is also known as radio frequency interference or RFI.
the goal of EMC is the correct operation,in the same electromagnetic environment,of different equipment which uses electromagnetic phenomena,and the avoidance of any interference effects.Thus, electromagnetic compatibility may be defined as the ability of a device,equipment or system to function satisfactory in its electromagnetic environment without introducing intolerable electromagnetic disturbance to anything in that environment.This definition applies to all power system,IT systems,communication systems,elector-medical equipments etc.
there are two aspects to EMC:
(i) a piece of equipment should be able to operate normally in its environment,and
(ii) it should not pollute the environment too much.