logging in or signing up basic electronics bijoy Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Copy Does not support media & animations WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 469 Category: Science & Tech.. License: All Rights Reserved Like it (0) Dislike it (0) Added: June 14, 2012 This Presentation is Public Favorites: 0 Presentation Description basic electronics Comments Posting comment... Premium member Presentation Transcript ELECTRICITY: ELECTRICITY Electricity is the science associated with flow of electric currentAC : AC AC means alternating current We can see an ac wave using an instrument called OscilloscopePowerPoint Presentation: The wave form of ac is a continuously changing signal The signal voltage changes at each second.AC GENERATION : AC GENERATIONThe ac signal : The ac signalDc signal: Dc signal DC means direct current The voltage generated from a battery is DC AC voltage can be converted to DC using a rectifier circuitCurrent: Current The unit of current is Ampere 1 ampere = 1000 milli ampere Conventional current from positive of battery to the negative terminalOhms Law: Ohms Law Voltage is directly proportional to current. When current flows through a resistor the voltage measured across it increases as current increases and decreases as current decreases. Voltage is measured by euation V = I RDc voltage and current measurement: Dc voltage and current measurement When measuring voltage connect the meter in parallel with the resistor When measuring current connect the meter in series with the circuitElectronics: Electronics Electronics is a branch of science dealing with electrical circuits containing active components such as Diodes , Transistors, and Integrated circuits.Finding values of resistors: Finding values of resistorsColour coding table: Colour coding tablePassive Components Resistors: Passive Components Resistors Parallel connection of Resistors. The total resistance reduces when connected in parallelResistance connected in series: Resistance connected in series Total resistance increases when resistance are connected in seriescapacitor: capacitor Unit of capacitance is Farad Capacitors are available in micro farad and Nano farads Different types of capacitor are Electrolytic and Disc capacitor Electrolytic capacitorDisc capacitor: Disc capacitorTransformer: Transformer Transformer has a primary winding and secondary winding Ac is applied to the primary of transformer Output is available on the secondary There are step up transformer and step down transformer. In a step down transformer the output voltage is lower than the inputConnection diagram: Connection diagramActive components Diodes: Active components DiodesDiode: Diode Diode is an electronic device which allow passage of electricity in one direction only Diode current flows from anode to cathodeDiode forward biased: Diode forward biased When we connect positive terminal of battery to anode and negative terminal of battery to cathode of diode the diode is forward biased. For conduction of diode the voltage of battery must be more than 0.7 voltsRectifier: Rectifier It is a circuit which convert an ac voltage to dc voltage Application example of Rectifier is a Battery Eliminator There are three types Half wave using single Diode, Full wave centre tap, Full wave BridgeHalf wave rectifier: Half wave rectifier It consist of only one diode . The output is measured across resistor R. The output is a pulsating dc signalFull wave Centre Tap Rectifier : Full wave Centre Tap RectifierFull wave Bridge rectifier: Full wave Bridge rectifierBattery Eliminator using half wave Rectifier: Battery Eliminator using half wave Rectifier You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.