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marta [7]
3 years ago
11

A zener diode exhibits a constant voltage of 5.6 volts for currents greater than five times the knee current.Izk is specified to

be 1 ma. the zener is to be used in the design of a shunt regulator fed from a 15 volts supply . the load current varies over range of 0 ma to 15mA . find a suitabe value for resistor R. what is the meaximum power dissipation of the zener diode.
Engineering
2 answers:
iren2701 [21]3 years ago
5 0

Answer:

<u><em>note:</em></u>

<u><em>solution is attached in word form due to error in mathematical equation. furthermore i also attach Screenshot of solution in word due to different version of MS Office please find the attachment</em></u>

Download docx
Lina20 [59]3 years ago
4 0

Given Information:  

Voltage across zener =  Vz = 5.6 V

Knee current = Izk = 1mA

Supply voltage = V = 15 V

Load current = IL = 15mA

Required Information:  

Resistor = R = ?

Power dissipation of zener = P = ?

Answer:

R = 470 Ω

P = 0.112 Watts

Explanation:

R = supply voltage - zener voltage/Total current

Where Total current = zener current + Load current

zener current = 5*knee current = 5*1 = 5 mA

Total current = 5 mA + 15 mA = 20 mA

R = (15 - 5.6)/0.02

R = 470 Ω

There maximum power will be dissipated in zener when load current is zero so all the current will flow through the zener

Iz = (15 - 5.6)/470

Iz = 0.02 A

P = IzVz

P = 0.02*5.6

P = 0.112 Watts

Therefore, the maximum power dissipation of zener is 0.112 Watts.

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Write a C program that will update a bank balance. A user cannot withdraw an amount ofmoney that is more than the current balanc
GarryVolchara [31]

Answer:

Explanation:

Sample output:

BANK ACCOUT PROGRAM!

----------------------------------

Enter the old balance: 1234.50

Enter the transactions now.

Enter an F for the transaction type when you are finished.

Transaction Type (D=deposit, W=withdrawal, F=finished): D

Amount: 568.34

Transaction Type (D=deposit, W=withdrawal, F=finished): W

Amount: 25.68

Transaction Type (D=deposit, W=withdrawal, F=finished): W

Amount: 167.40

Transaction Type (D=deposit, W=withdrawal, F=finished): F

Your ending balance is $1609.76

Program is ending

Code to copy:

// include the necessary header files.

#include<stdio.h>

// Definition of the function

float withdraw(float account_balance, float withdraw_amount)

{

// Calculate the balace amount.

float balance_amount = account_balance - withdraw_amount;

// Check whether the withdraw amount

// is greater than 0 or not.

if (withdraw_amount > 0 && balance_amount >= 0)

{

// Assign value.

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// Definition of the function deposit.

float deposit(float account_balance, float deposit_amount)

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// Check whether the deposit amount is greater than zero

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// Update account balance.

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// return account balance.

return account_balance;

}

int main()

{

// Declare the variables.

float account_balance;

float deposit_amount;

float withdrawl_amount;

char input;

// display the statement on console.

printf("BANK ACCOUT PROGRAM!\n");

printf("----------------------------------\n");

// prompt the user to enter the old balance.

printf("Enter the old balance: ");

// Input balance

scanf("%f", &account_balance);

// Display the statement on console.

printf("Enter the transactions now.\n");

printf("Enter an F for the transaction type when you are finished.\n");

// Start the do while loop

do

{

// prompt the user to enter transaction type.

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// Input type.

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// Check if the input is D

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// Check if the input is W

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// Call to the function.

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}

// Check if the input is F

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{

// Dispplay the amount.

printf("Your ending balance is $%.2f\n", account_balance);

printf("Program is ending\n");

}

// End the while loop

} while(input != 'F');

return 0;

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the picture uploaded below shows the program screenshot.

cheers, i hope this helps.

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Explanation:

Download pdf
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