Kumar Lab report 3 - TITLE: LAB-3: DC Voltage Supplies and...

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TITLE: LAB-3: DC Voltage Supplies and Regulation NAME: Saimani Kumar M.N.V (11554210) SECTION: 062 PARTNER: Ravneet Kaur TA: Kaloyan Popov DATE PERFORMED: 9 th Oct 2009 DATE DUE: 16 th Oct 2009 DATE RECEIVED:
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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.
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Circuit Diagrams R C = 1000Ω Fig. 1. Bridge Rectifier used for Rectification th 2009. R C = 1000Ω, C 1 = 0 F, 2.2µF and 100µF Fig. 2. RC Filter used for Improving the DC Waveform th 2009.
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Fig. 3. Basic Voltage Regulator System with Three Basic Components – Zener Reference Circuit, Difference Voltage Amplifier and the Pass Transistor th 2009. R 1 = 1.466kΩ, R 2 = 9.967kΩ, R L (varies) Fig. 4. Positive High-Voltage Connection for the LM723 IC th 2009.
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Data Sheet DC VOLTAGE SUPPLIES AND REGULATION Quantity Value V REF 7.235 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) th 2009. V in (V) V in (V) measured V out (V) V REF (V) 6 5.990 4.412 5.120 7 7.001 5.373 6.050 8 7.999 6.336 7.000 9 8.998 7.318 7.200 10 9.997 8.223 7.142 11 11.001 8.327 7.210 12 12.001 8.327 7.210 13 13.000 8.327 7.210 14 14.004 8.324 7.210 15 15.002 8.321 7.205 16 16.001 8.319 7.209 17 17.000 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 8.310 7.210 24 23.993 8.310 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 8.307 7.205 29 28.990 8.307 7.206
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30 29.990 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) th 2009. In tables 3 and 4, I
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Kumar Lab report 3 - TITLE: LAB-3: DC Voltage Supplies and...

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