Explore BrainMass
Share

# Circuits

### Determine the current flowing in the load by using Thevenin's and superposition theorems.

The diagram in the attached figure shows a 50 Ohm load being fed from two voltage sources via their associated reactances. Determine the current i flowing in the load by using: (a) Thevenin's theorem (b) The superposition theorem Please show and comment workings.

### Multisim, Digital voltmeter, Reconstructing a digitized signal

* Activity 1: Using Multisim, construct a simple 0-5V DC digital voltmeter using the ADC (rather than the ADC0804) and the 74185 to convert the binary output into BCD, which will be displayed on two 7-segment displays. The 74185 will be used to convert a 6-bit binary number to a 2-digit BCD number. Note that the 2 least signifi

### Design a Multisim circuit for a fuel-level sending unit.

The gas tank on your car has a fuel-level sending unit that works like a potentiometer. A float moves up and down while the gasoline level, changing the variable resistor setting and producing a voltage proportional to the gas level. A full tank produces 12V, and an empty tank produces 0V. Design a Multisim circuit using an LM33

### Logic Circuit

For the logic circuit shown in Fig. 3, determine F in terms A, B, C. Simplify the resulting expression so it has the fewest terms containing only NAND. Then check the simplified expression with the original by constructing a truth table. Please see the attached file for the logic circuit .

### Calculate Heat Loss: Effective Heat Transfer of Surface

Two parallel surface with area 2000cm^2 and 5cm apart exchange heat in a vacuum. Surface A is at 125 C and surface 2 is 75 C, Emissivity is 0.9 V12 =0.9 What is the heat loss from surface 1. What is the effective heat transfer of the surface.

### Data Communication and Logic Circuits

Please see the attachment for the questions. For question 1, if the text wording changed but the number of characters stayed the same, would this change anything? Instead of "Go UM!" if it said "Go VT!" would that make any difference in the outcome? 1. Consider a data communications system that represents characters using

### Find current and voltage in a series circuit

Two resistors with resistance 8.60 ohms and 16.6 ohms and a battery of 6.00 V with internet resistance of 1.90 ohms are placed in a series circuit. Find the current in the circuit and the magnitude of voltage drop across the 8.60-ohm resistor.

### Brightest bulb in the bunch

Three identical light bulbs are placed in series, in a circuit with a 12 V battery. Which of the following statements are true? True False the resistance of each bulb is the same True False the current through each bulb is different True False the first bulb is brighter than the other two True False the volta

### Hair dryers can run off one typical household circuit

Part 1 A typical household circuit is capable of carrying 15.0 Amps of current at 120 V before the circuit breaker will trip. How many 1500-W hair dryers can run off one such circuit? Part 2 In the rush to get ready for lecture, a physics professor leaves the hair dryer described in the previous problem running and d

### Thermal expansion - why meat curls up at the corners in a pan

Please help answer the following physics question. This will seem like a silly question, but our homework is to describe the phenomena by which the outer edges of a hamburger or a slice of bologna turn upward when placed in a hot pan to cook. So why does this occur? Is this a heat issue or a moisture content phenomena of

### Packet switching vs Circuit switching

Compare and contrast packet switching and circuit switching. Which is more commonly used? What are the advantages and disadvantages of each?

### Logic Digital Circuits

Inputs: 1) door switch 2) Start button 3) Stop button 4) Clothes sensor switch Outputs: 1) Cycle complete buzzer 2) Low heat Light 3) High heat Light 4) Door open Light Rules of operation: 1. Clothes dryer door open, the Door open light comes on. 2. Dryer will no

### Logic Circuits for Boolean Expression

I need the Boolean expression and the logic circuit... It is a single question and if you give me the correct solution I will post and hire the same person Please any one help me

### RC circuit equation

1. Obtain the general differential equation of an RC circuit (capacitor and resistor in series, no voltage source) 2. Obtain the general solution of the equation giver R=5 Ohm, C=0.05F 3. Obtain the particular solution given that Q(0)=1 Coulomb

### Impulse Response for Circuits

Please see attached for full questions and give detailed answers. I am trying to check my answers against someone elses. Thanks in advance.... 1. The impulse response for a circuit is...... 2. The transfer function for a circuit is..... 3. ...is the circuit impulse stable? 4. Consider a series RLC circuit with .... 5. The

### DC Circuits - Capacitors

A non-ideal capacitor having a 'leaky' dielectric can be modeled by the circuit shown (see attachment), where RL represents the leakage resistance measured across the dielectric. A 100 pF parallel-plate capacitor has a mica dielectric of relative permittivity &#949;r = 12 and resistivity of &#961; = 1014 &#937; m. (a) Calcul

### Transfer Function, Impulse Response and Steady State Analysis

Please refer to the attached file. 1. What is the response function of the circuit in the s-domain? 2. What are the poles? Is than an impulse response stable circuit? 3. What are the poles? Is than an impulse response stable circuit? 4. What is the natural response of the circuit? 5. Is the circuit impulse stable? 6. Is

### Greater than 9 detector, Alarm circuit, multiplier circuit

Greater than 9 detector 1) Design a circuit whose output will be high if the 4-bit data input is a value greater than 9. It only needs to be a simple circuit using basic gates. Also need truth table. 2) Alarm circuit design an alarm circuit to be used in a process control system. Temp (T), Presure (P), Flow (F), and Level (L)

### Circuit Analysis of Three Elements

1. A circuit consists of three elements in series. A source delivers 90 W and one of the passive elements absorbs 20 W. How much power does the third element absorb? 2. Find the Norton equivalent circuit to Figure 1-2.

### Problem requiring use of Kirchoff's Rules

Please help with the following problem. Provide step by step calculations to go along with the solution. Use Kirchhoff's rules to find the current in each of the four resistors in the circuit shown below (see the attachment). Also, calculate the voltage drop across each of the four resistors. See attached file for a diag

### Flashbulb Circuit for Flash Unit

The attached file shows a simplified circuit for a photographer's flash unit. The circuit consists of a 9 V battery (V) connected to a 55 kΩ resistor (R), a 140 μF capacitor (C), and two switches (S1 and S2). Initially, the capacitor is uncharged and the two switches are open. To charge the unit, switch S1 is closed. T

### Different Points of a Circuit

Please help answer the following problems. In the circuit shown in the attached picture E=10V, r=1ohm, R1=2khom, and R2=R3=R4=3kohm. 1. What is the current at point a of the circuit? 2. What is the potential difference between points a and b? 3. What is the potential difference between points b and d? 4. What is

### RC Circuit: Potentials of different points

The figure (see attachment) employs a convention often used in circuit diagrams. The battery (or other power supply) is not shown explicitly. It is understood that the point at the top, labeled "18.0 V," is connected to the positive terminal of a 18.0 V battery having negligible internal resistance, and that the "ground" symbol

### RC Circuit: Find the current through a resistors, final charge on the capacitor

The capacitor in the figure (see attachment) is initially uncharged. The switch is closed at t=0. 1.) Immediately after the switch is closed, what is the current through the resistors R1, R2, and R3? 2.) What is the final charge on the capacitor?

### Short Circuit Evaluation's Impact on the Programmer

"Short Circuit Evaluation's impact on the programmer". What if a programming language did not have this feature, how would the programmer be able to get the same functionality when using single and iterative control statements?

### Calculations of RMS Voltage of a Complex Waveform

Calculate the rms value of the following complex waveform: V = 100. Sin (wt + 30) + 20. Sin (wt + 90) + 10. Sin (wt + 15) NB. Vrms = sqrt(Edc2 + E12/2 + E22/2 + E32/2 + etc).

### Series tuned resonant circuit

1 ) A series-tuned resonant circuit operates at a resonant frequency of 1 MHz and contains a 0.1 microfarad capacitor and a 300 microfarad inductor with 20 ohms resistance. Calculate the circuit 's quality factor and bandwidth at its resonant frequency. 2) A series-tuned LC circuit with a resonant frequency of 2KHz and a 2 m