REMOTE CONTROLLING OF HOME APPLIANCES ABSTRACT The main aim of conducting this project is to control a maximum of eight electrical appliances by just using a TV remote. Normal IR circuits can switch only one device. But using this circuit‚ different devices can be controlled using same remote with different switches. In this circuit‚ we interfaced 8 devices. These devices are switched using remote keypad -1 to 8. AT89C51 microcontroller is used to control the inputs and
Premium Resistor
WWW.PHYSICSCOSMOS.COM (HTTP://PHYSICSCOSMOS.COM/INDEX/) Home (http://physicscosmos.com/index/) CSIR-UGC NET (http://physicscosmos.com/index/home-2/ccsir-ugc-net/) GATE PHYSICS (http://physicscosmos.com/index/home-2/gate/) JAM (http://physicscosmos.com/index/home-2/iisc/) JEST (http://physicscosmos.com/index/home-2/jam/) IISC (http://physicscosmos.com/index/home-2/iisc-2/) TIFR (http://physicscosmos.com/index/home-2/tifr/) PHYSICS BOOKS (http://physicscosmos.com/index/home-2/physics-books/)
Premium Electromagnetism Physics Magnetic field
percentage of an amplifier operational range. With small signal the BJT can be replaced with small signal linear model. This model is also called small signal equivalent circuit. For small ac signals the junction capacitances should be considered in the analysis of the BJT. These junction capacitances can be ignored for DC signals but for actual AC signals they need to be considered & modeled. The figure bellow shows a practical CE transistor amplifier .It consist of different circuit components.
Premium Transistor Amplifier Bipolar junction transistor
distance depends on membrane and longitudinal resistance to current flow: • Resistance of cytoplasm (Rl) • Leakage of charge across the membrane (Rm) Vm and the time it takes to stabilize (charge has to accumulate) depend on the membrane capacitance 1 10/22/2012 Passive spread of electric signal Passive electrotonic conduction: • The change in Vm decays exponentially with distance • The rate of the decay depends on Rl and Rm- the spread of a current along the membrane is enhanced
Premium Action potential
DC-DC Converter Design for Battery-Operated Systems Harry Arbetter. Robert Erickson. and Dragan Maksimovid Power Electronics Group Department of Electrical and Computer Engineering University of Colorado‚ Boulder‚ CO 80309-0425 USA Abstrurt - This paper describes performance‚ design and optimization of de-dc converters for energy limited‚ battery operated systems. Variable-frequency operation is used to achieve voltage regulation and high efficiency for an extremely wide range of load currents
Premium Inductor Capacitor
CHAPTER 1 INTRODUCTION‚ CIRCIT DIAGRAM AND WORKING INTRODUCTION Spy ear is the devices which converts low power audio signal to high power signal and gain. It can be used in Theaters ‚ Concert halls‚ Lecture rooms‚ Trains‚ Court houses‚ Conference rooms‚ Embassies‚ Gaming facilities‚ Recording studios‚ Aircraft ‚ railways ‚bus station etc.With this sound amplifier‚ you can now hear things crystal clear that you could never hear before. Spy ear is very easy to use‚ just put the ear
Premium Management Marketing Education
University of Waterloo Department of Electrical & Computer Engineering E&CE 231 Final Examination - Spring 2000 Aids: Formula Sheets (attached)‚ Scientific Calculator Time Allowed: 3 hours Exam Type: Closed Book Instructor: C. R. Selvakumar Date: August 10‚ 2000 Max Marks: 100 Instructions: Answer all questions in PART-A and any two questions in full from PART-B. State your assumptions clearly. Be concise‚ precise and clear in your answers General assumptions to be made when not
Premium Engineering Electronics Electrical engineering
UNISONIC TECHNOLOGIES CO.‚ LTD S8050 LOW VOLTAGE HIGH CURRENT SMALL SIGNAL NPN TRANSISTOR DESCRIPTION The UTC S8050 is a low voltage high current small signal NPN transistor‚ designed for Class B push-pull audio amplifier and general purpose applications. 1 NPN SILICON TRANSISTOR FEATURES * Collector current up to 700mA * Collector-Emitter voltage up to 20 V * Complementary to S8550 Lead-free: S8050L Halogen-free: S8050G TO-92 ORDERING INFORMATION Normal S8050-xx-T92-B S8050-xx-T92-K
Premium Integrated circuit Bipolar junction transistor Electricity
Lecture 4 CMOS Inverter Professor Sunil Bhave p CU School of Electrical and Computer Engineering February 8‚ 2010 Inverters I t DC Analysis Operating regions and voltage transfer curve Logic levels and noise margins Transient Analysis - delay Power P Objectives Obj ti We have studied how a transistor can be viewed as a switch (switchview) We have derived the I-V model for a transistor Now with this simple model‚ we analyze the “electrical” properties of a CMOS inverter Noise Margin Delay
Premium MOSFET Trigraph
test leads are disconnected. V — Measures AC and DC voltages. μA/A ‚ mA/A — Measures AC and DC amperage. 1. Remove the screw on the back to open the battery compartment cover. Install one 9V battery (not included). / — Measures resistance and capacitance. / — Checks continuity and diodes. Hz/Duty — Measures frequency and duty cycle. 2. Replace the cover and secure it with the screw. EF r#HECKSELECTRICÞELDS OFF — Turns off the meter. o Connect the test leads q Use the buttons 1. Remove
Premium Alternating current Voltage Direct current