Question

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Using your knowledge of diodes, you will design a voltage regulator. Diode Characteristics The saturation current or scale current, Is, for two different diodes (one signal diode and one LED) are not identical and need to be experimentally determined. Recall: 1, = I selv, Assumptions: Red LED: Signal Diode (1N4001): IS.LED = 3.604 x 10-33 A Is-Signal = 6.916 x 10-14 A Voltage Regulator DESIGN VCC = 10V Using the assumptions from Part I, design a voltage regulator, using the schematic to the right, where D4 is an LED and diodes D1-D3 are the same type of diode (1N4001 signal diode). The value of RL is 1.5 k 2. Vout The circuit must designed to give a Vout=2.15 V. Determine the appropriate R2 value to give the designed Vout. - SRL

Answer 1

2.15 v. Te=100 Ranska nafhol ten D., D2, De- signal diode Du - Red LED Is, LED = 3.604 x 1023 A 15, signal = 6.916 m 1644 A In - 15 € 25 mua0,025 st = the remal voltage - Yout 20131.433 mA Tisk SRL so , signale series) - are connected in Yo solo 017167 ( since all the three diodes 20 = 6.916 rion (07167/0.025) 195.46 MA

current through Red LED diodo Pra, 2. " * * гр с 1,933 t19S-чь с 19ь. 84 me 24. - 22, ер е */*.) ? - 17.е) ° 1964 x 10 3) на сх.ч. х10 2. 604 x 10 2013 s, LED 31 г 13:08 6 х 10 7 . n(s-чь хо") - 73. 08 2) г до 25 x 73.99 г). 827 %: 4 г). №27 . - Vec - Vom - - 6.o23 Э) 1 xқ, = 6.o23 sot gan 6,023 с 0,03059 Кл. c) R, , 89 (mi) , 30. 6 л с. 30.6 .