2013 ELE 402 HIGH VOLTAGE TECHNIQUESAPPLICATIONS OF INSULATING MATERIAL IN POWER TRANSFORMER APPLICATIONS OF INSULATING MATERIAL IN POWER TRANSFORMER Insulating fluids (gases and liquids) provide insulation between phases and grounded parts of electrical equipments. These also carry out heat from the windings of the electrical equipments However‚ solid insulating materials
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supply is very important in our day to day life. We use it to charge or operate our DC components like charger light‚ cell phone battery charger etc. It’s nothing but a AC to DC converter. Keywords: 5V DC power supply‚ rectifier‚ diode‚ filter‚ capacitor‚ zener diode‚ voltage regulator‚ signal‚ waveshape. 1. Introduction I’m designing a 5V DC power supply. Here I’m basically designing a AC to DC converter. To convert the AC to DC‚ I’m using components like full wave bridge rectifier‚ filter &
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changes Photoresistor / Light dependent resistor (LDR) Photo-resistor - change resistance with light intensity change Capacitor Symbols Capacitor Capacitor is used to store electric charge. It acts as short circuit with AC and open circuit with DC. Capacitor Polarized Capacitor Electrolytic capacitor Polarized Capacitor Electrolytic capacitor Variable Capacitor Adjustable capacitance Inductor / Coil Symbols Inductor Coil / solenoid that generates magnetic field Iron Core
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remote control. The circuit is powered by regulated 9V. The AC mains is stepped down by transformer X1 to deliver a secondary output of 12V-0-12V. The transformer output is rectified by full-wave rectifier comprising diodes D1 and D2‚ filtered by capacitor C9 and regulated by 7809 regulator to provide 9V regulated output. Any button on the remote can be used for controlling the speed of the fan. Pulses from the IR receiver module are applied as a trigger signal to timer NE555 (IC1) via LED1 and resis-
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Design of Smart Lighting and PA System EE 2031 Mini Project National University of Singapore Department: Electrical & Computer Engineering Course: B. Eng. Electrical Engineering EE2031 Circuit and Systems Design Lab: Mini Project Design of Smart Lighting and PA System Module facilitators: Assoc. Prof Chim Wai Kin Dr Xiang Ning Mr Loke Yuan Ren Mr Sangit Sasidhar Lab Group: Friday_Room1_G2 (9am-12pm) Tan Kheng Loong A0087979X Wong Kok Keong A0087415B Wong Wei Long Andy A0087388J
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Figure 1. Mask set design. Shown is a single “mask unit cell” and its contents. Each completed 2 inch wafer contains roughly forty whole mask cells. ECE 4752 Wafer Test Procedures In order to evaluate the electrical characteristics of the CMOS devices fabricated in ECE/ChBE 4752‚ a probe station is used to connect test equipment to the devices on-wafer. This is accomplished by positioning probes with mechanical manipulators such that their tips rest on metal pads on the wafer. Care must be
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the suggested automatic power factor correction scheme are explained and its operation is described. APFC thus helps us to decrease the time taken to correct the power factor which helps to increase the efficiency. Keywords APFC‚ Apparent power‚ Capacitor bank‚ Power factor I. INTRODUCTION Majority of the loads in the industries are highly inductive in nature such as induction motors‚ AC/DC drives‚ welding machines‚ arc furnaces‚ fluorescent Lightings‚ electronic controls and computers. There may
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received by the condenser mic connected in the ckt. The LM386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low‚ but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200. The inputs are ground referenced while the output automatically biases to one-half the supply voltage. The quiescent power drain is only 24 mill watts when operating from a
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the voltage supply‚ given to electronic circuits. This project‚ namely VARIABLE VOLTAGE REGULATOR‚ aims at fulfilling such small goals‚ using the 3-terminal voltage regulator LM317. The circuit consists of an IC LM317 and a set of resistors and capacitors‚ in addition to the transformer and the rectifying element. The AC voltage‚ from the mains supply is initially stepped down to the desired voltage‚ which is then rectified to be applied to the input terminal of the voltage regulator IC. As mentioned
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Decision Rationale Decision 1 In determining our initial strategy‚ we knew that we wanted to focus on the product that would be most profitable and key in on features that are important to the customer. Looking at product sales in 2008‚ the NiMH sold 28.0 M units and the Ultracapacitor sold only 4.3 M units. Based on these sales‚ the NiMH generated $280.3 M and the Ultracapacitor generated $86.2 M. In addition‚ when reviewing the Income Statement‚ the NiMH produced a profitable contribution in
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