ecel303_lab3se - DC voltage Supplies and Regulations Seher...

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DC voltage Supplies and Regulations Seher Ahmad Palak Chandra Miss Elaine Garbarine 04/18/2007 04/27/2007
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DC VOLTAGE SUPPLIES AND REGULATION Objective The purpose of this experiment is to calculate voltage regulation, design a voltage regulator IC system and convert AC line voltage to a regulated DC voltage. The first step in the process of converting the line voltage to a lower level DC is to reduce the level of the AC voltage with a step-down transformer. This is followed by converting the AC sine wave to a full-wave rectified sine wave (no negative content). The third step is to convert the varying rectified DC wave to a constant (flat) DC function. The final step is regulation, which keeps the DC level from changing if either the power line changes or the load connected to this DC power supply changes. Circuit Diagrams R C = 1000Ω Fig. 1. Bridge Rectifier used for Rectification Performed by Palak Chandra and Seher Ahmad on April 19 th 2007.
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R C = 1000Ω, C 1 = 0 F, 2.2µF and 100µF Fig. 2. RC Filter used for Improving the DC Waveform Performed by Palak Chandra and Seher Ahmad on April 19 th 2007 Fig. 3. Basic Voltage Regulator System with Three Basic Components – Zener Reference Circuit, Difference Voltage Amplifier and the Pass Transistor Performed by Palak Chandra and Seher Ahmad on April 19 th 2007
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R 1 = 1.466kΩ, R 2 = 9.967kΩ, R L (varies) Fig. 4. Positive High-Voltage Connection for the LM723 IC Performed by Palak Chandra and Seher Ahmad on April 19 th 2007. Data Sheet DC VOLTAGE SUPPLIES AND REGULATION Quantity Value V REF 7.2357 V R 2 9.967 kΩ R 1 1.505 kΩ V o 8.317 V Table 1. Measured Values for the Quantities V REF , R 2 , R 1 and V o for VR Circuit Test (Part 2.a) Performed by Palak Chandra and Seher Ahmad on April 19 th 2007
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V in (V) V in (V) measured V out (V) V REF (V) 6 5.99 4.412 5.12 7 7.001 5.373 6.05 8 7.999 6.336 7 9 8.998 7.318 7.2 10 9.997 8.223 7.142 11 11.001 8.327 7.21 12 12.001 8.327 7.21 13 13 8.327 7.21 14 14.004 8.324 7.21 15 15.002 8.321 7.205 16 16.001 8.319 7.209 17 17 8.317 7.205 18 18.004 8.316 7.205 19 19.003 8.315 7.205 20 20.002 8.313 7.205 21 20.994 8.314 7.207 22 21.993 8.314 7.209 23 22.993 8.31 7.21 24 23.993 8.31 7.207 25 24.992 8.309 7.208 26 25.992 8.308 7.206 27 26.992 8.308 7.206 28 27.991 8.3075 7.205 29 28.99 8.307 7.206 30 29.99 8.306 7.206 Table 2. Measured Values for the Quantities V REF , R 2 , R 1 and V o for VR Circuit Test (Part 2.b) Performed by Palak Chandra and Seher Ahmad on April 19
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This note was uploaded on 12/02/2011 for the course ECEL 353 taught by Professor Gerber during the Spring '11 term at Hanoi University of Technology.

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ecel303_lab3se - DC voltage Supplies and Regulations Seher...

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