Blocking Diode Is Useful Tool For Limiting The Direction...

Blocking diode The blocking diode is a helpful tool for limiting the direction energy can flow through a wire to just one direction. It uses a semiconductor P/N junction achieve this behavior. The diagram shows a simple setup with two panels charging a battery (for simplicity no controller is shown) with a blocking diode in series with the two panels, which are also wired in series. When the sun shines, as long as the voltage produced by the two panels is greater than that of the battery, charging will take place. However, in the dark, when no voltage is being produced by the panels, the voltage of the battery would cause a current to flow in the opposite direction through the panels, discharging the battery, if it was not for the blocking diode in the circuit. Blocking diodes will be of benefit in any system using solar panels to charge a battery. Blocking diodes are usually included in the construction of solar panels so further blocking diodes are not required. Most photovoltaic solar panels are used to charge a battery during the daytime. Nearly all panels come equipped with a blocking diode. The diode prevents DC current from flowing backwards from the battery bank into the panel at night. The usual blocking device of choice is a schottky diode with a typical 0.5v voltage drop. In some large panels, which can often source over 4 Amps of current, the power loses due to this voltage dropShow MoreRelatedGsm Based Anti Theft System11765 Words   |  48 Pages 4.5 MICROCONTROLLER (AT89S52/C51) 4.6 GSM COMMUNICATION 4.7 GSM MODEM 4.9 SMART CARD MODULE 4.10 KEYPAD 4.11 LCD DISPLAY 4.12 MAX-232 4.13 DB9 CONNECTOR 4.14 ENERGY METER 4.15 BC547 4.15 OPTOCOUPLER 4.16 1N4007 4.17 RESISTOR 4.18 CAPACITOR 5. SOFTWARE REQUIREMENTS 56 5.1 IDE 57 5.2 CONCEPT OF COMPILER 57 5.3 CONCEPT OF CROSSRead MoreFinal Year Project (Heat Sensor)15216 Words   |  61 Pages After Transformation PCB Layout PCB Layout Sample Original After Transformation Component Used Part Description Note IC 1 LM741 Op-Amp NE741, µA741,etc Q1 2N2222A transistor Any power of transistor D1 1N4148 Diode 1N4001, or others Th1 10k Thermistor KC003T in prototype Re1 12v Relay RS is 1A R1 15k, ¼W,5% resistor Brown-green-orange R2,R5 10k, ¼W,5% resistor Brown-black-orange R3 150k, ¼W,5% resistor Brown-green-yellow R4 4.7k, ¼W,5% resistor Yellow-purple-redRead MoreHydraulic System Introduction18784 Words   |  76 Pageswork under high pressures, can be very expensive. (5) Hydraulic fluids under pressure are dangerous and under certain conditions, flammable. PRINCIPLES OF HYDRAULIC SYSTEM OPERATION Introduction Hydraulic systems employ fluids to transmit energy from the point of application, ie power source to the output actuator. A fluid is defined as, ‘a substance that will readily take up the shape of its container’ and it may be either a liquid or a gas. However, one of the main characteristics ofRead MoreHarmonic Load Flow Analysis8204 Words   |  33 Pageswhich include * Rectifiers * Inverters * Static VAR compensators * Cycloconverters * HVDC transmission The thyristor family includes: * Reverse blocking triode thyristors or silicon controlled rectifiers â€Å"SCR’s† * Bidirectional triode thyristors known as triacs * Bidirectional diode thyristors known as diacs * Reverse conducting triode thyristors * Light- activated SCR’s * Asymmetrical SCR’s * Static inductive thyristors * Gate turn-off thyristorsRead MoreQuality Improvement328284 Words   |  1314 Pagesframework to use in conducting quality improvement projects. DMAIC often is associated with six-sigma, but regardless of the approach taken by an organization strategically, DMAIC is an excellent tactical tool for quality professionals to employ. Part II is a description of statistical methods useful in quality improvement. Topics include sampling and descriptive statistics, the basic notions of probability and probability distributions, point and interval estimation of parameters, and statistical hypothesisRead MoreManaging Information Technology (7th Edition)239873 Words   |  960 PagesTechnology Chapter 5 Chapter 6 Chapter 7 Enterprise Systems 189 Managerial Support Systems E-Business Systems 253 187 223 PART III Acquiring Information Systems 327 Chapter 8 Chapter 9 Chapter 10 Chapter 11 Basic Systems Concepts and Tools 329 Methodologies for Custom Software Development 361 Methodologies for Purchased Software Packages 390 IT Project Management 410 PART IV The Information Management System Chapter 12 Chapter 13 Chapter 14 Chapter 15 517 Planning Information