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Electrical Engineering Forum

Join the expert discussion on electrical engineering topics. Topics like the uses of electricity and the equipment for power generation. Circuits, Fiber, Signals and Systems, Semiconductor Devices...

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Why do you get sideband frequencies for amplitude modulation (AM)?

May 15, 2012 · Replies 35 · Feb 6, 2014

2

Replies: 35

Views: 25K

Creating homemade motion sensor to camera

Feb 5, 2014 · Replies 2 · Feb 6, 2014

Replies: 2

Views: 2K

What is the function of Switchgear in Substation?

Jan 28, 2014 · Replies 3 · Feb 6, 2014

Replies: 3

Views: 5K

ESD Mats: Dissipative vs Conductive

Feb 2, 2014 · Replies 2 · Feb 4, 2014

Replies: 2

Views: 2K

Using RF Transmitter/Receiver to power LEDs from a Sensor?

Feb 4, 2014 · Replies 4 · Feb 4, 2014

Replies: 4

Views: 3K

Transformer Current Drops with Load

Feb 4, 2014 · Replies 2 · Feb 4, 2014

Replies: 2

Views: 2K

Typical carrier frequency for amplitude modulation

Feb 4, 2014 · Replies 1 · Feb 4, 2014

Replies: 1

Views: 2K

How Do You Calculate Transformer kVA Rating Based on Site Measurements?

Feb 3, 2014 · Replies 1 · Feb 4, 2014

Replies: 1

Views: 2K

Design & Build a 12V Heating Pad - Advice Needed

Feb 2, 2014 · Replies 8 · Feb 3, 2014

Replies: 8

Views: 3K

Irritatingly failed resistance calculations

Jan 28, 2014 · Replies 6 · Feb 3, 2014

Replies: 6

Views: 2K

Designing a headphone with customizable functions

Feb 2, 2014 · Replies 3 · Feb 3, 2014

Replies: 3

Views: 2K

Torque input of synchronous machine

Feb 1, 2014 · Replies 5 · Feb 3, 2014

Replies: 5

Views: 2K

How Long Does It Take to Discharge Body's Electrostatic Potential?

Feb 2, 2014 · Replies 5 · Feb 3, 2014

Replies: 5

Views: 2K

Photomultiplier Tube Destroying Amplifiers - Suggestions?

Jan 28, 2014 · Replies 3 · Feb 3, 2014

Replies: 3

Views: 4K

Disparity between resistor power rating and rated voltage?

Jan 27, 2014 · Replies 11 · Feb 2, 2014

Replies: 11

Views: 3K

Microcontroller kit for a beginner embedded systems hobbyist

Feb 2, 2014 · Replies 4 · Feb 2, 2014

Replies: 4

Views: 5K

Essential Multimeter Features for Accurate PC Repair for Techs

Dec 27, 2013 · Replies 20 · Feb 2, 2014

Replies: 20

Views: 4K

Is there an adapter for small IC chips to fit on a PC board?

Feb 1, 2014 · Replies 13 · Feb 1, 2014

Replies: 13

Views: 2K

Lithium Battery Life: High Setting, Cold Weather & Insulation

Jan 30, 2014 · Replies 7 · Feb 1, 2014

Replies: 7

Views: 2K

Measuring electricity passed to ground from an antenna

Jan 31, 2014 · Replies 2 · Feb 1, 2014

Replies: 2

Views: 2K

Simple circuit for Battery Status indication for 7.4v re-chargable bat

Jan 31, 2014 · Replies 2 · Feb 1, 2014

Replies: 2

Views: 2K

What is the meaning of the CESMM3 Ref in BOQ of Transmission & Distrib

Jan 28, 2014 · Replies 1 · Feb 1, 2014

Replies: 1

Views: 3K

What is the best op-amp for EMG signals?

Jan 31, 2014 · Replies 2 · Jan 31, 2014

Replies: 2

Views: 3K

Creating an RF Signal using analog methods

Jan 26, 2014 · Replies 28 · Jan 30, 2014

Replies: 28

Views: 4K

Electric Motorcycle Drive & Hall Effect Sensor Ringing

Jan 29, 2014 · Replies 1 · Jan 30, 2014

Replies: 1

Views: 2K

Reduce Power Source Sensitivity

Jan 30, 2014 · Replies 5 · Jan 30, 2014

Replies: 5

Views: 2K

What is the formula for two (or more) tone amplitude modulated signal?

Jan 30, 2014 · Replies 2 · Jan 30, 2014

Replies: 2

Views: 2K

Spice with z, y, s, and abcd paramaters

Jan 29, 2014 · Replies 1 · Jan 30, 2014

Replies: 1

Views: 1K

Optimizing Non-Adjustable Voltage Regulators with Simple Resistor Configurations

Jan 28, 2014 · Replies 15 · Jan 30, 2014

Replies: 15

Views: 5K

Measure Phase Angle: No Oscilloscope Needed

Jan 26, 2014 · Replies 12 · Jan 30, 2014

Replies: 12

Views: 5K

Help with Schematic Design for BLE Device

Jan 29, 2014 · Replies 5 · Jan 30, 2014

Replies: 5

Views: 2K

Is the FFT effective for analyzing real world music?

Jan 29, 2014 · Replies 9 · Jan 30, 2014

Replies: 9

Views: 2K

AC battery backup without ups possible?

Jan 28, 2014 · Replies 6 · Jan 30, 2014

Replies: 6

Views: 2K

What is the best topology for adding surge protection to Ethernet PHY?

Jan 29, 2014 · Replies 3 · Jan 29, 2014

Replies: 3

Views: 2K

Guidance for Mech. Engr's trying to learn Programming, DAQ, & Controls

Jan 29, 2014 · Replies 2 · Jan 29, 2014

Replies: 2

Views: 1K

Using SPICE with FEMM (Finite Element Method Magnetics)

Jan 11, 2014 · Replies 4 · Jan 29, 2014

Replies: 4

Views: 5K

What is the meaning in the 144 Optical Fiber Cable? Especially why 144

Jan 28, 2014 · Replies 2 · Jan 29, 2014

Replies: 2

Views: 3K

PIN Photodiode, High Voc, Low Isc

Jan 26, 2014 · Replies 3 · Jan 29, 2014

Replies: 3

Views: 2K

How to statically charge something

Jan 17, 2014 · Replies 17 · Jan 28, 2014

Replies: 17

Views: 4K

How does the electric field get removed in crystal oscillator circuits?

Jan 26, 2014 · Replies 14 · Jan 28, 2014

Replies: 14

Views: 3K

Notes on interior lighting circuits (?)

Jan 27, 2014 · Replies 3 · Jan 28, 2014

Replies: 3

Views: 1K

Music Note Frequencies: Research & Info

Jan 28, 2014 · Replies 3 · Jan 28, 2014

Replies: 3

Views: 4K

Software capable of modeling ground grid performance during faults cau

Jan 28, 2014 · Replies 1 · Jan 28, 2014

Replies: 1

Views: 1K

ESC not working as intended, what am I doing wrong?

Jan 27, 2014 · Replies 5 · Jan 28, 2014

Replies: 5

Views: 2K

LV 600V/1000V Insulation Grade Panel Board means?

Jan 28, 2014 · Replies 1 · Jan 28, 2014

Replies: 1

Views: 5K

Control of electrical equipment via phone/internet

Jan 28, 2014 · Replies 1 · Jan 28, 2014

Replies: 1

Views: 2K

What Is Phase Differential in Electrical Protection Systems?

Jan 22, 2014 · Replies 1 · Jan 28, 2014

Replies: 1

Views: 2K

Adding Bias Voltage to HV Generator - HV Circuit Solutions

Jan 26, 2014 · Replies 11 · Jan 28, 2014

Replies: 11

Views: 2K

Is a Sun-Solar Cell System Truly Equivalent to a Carnot Engine?

Jan 27, 2014 · Replies 7 · Jan 27, 2014

Replies: 7

Views: 2K

How Does Particle Swarm Optimization Enhance Power System State Estimation?

Feb 21, 2013 · Replies 7 · Jan 27, 2014

Replies: 7

Views: 3K

Galvanometer Frame: Aluminum Advantages

Jan 27, 2014 · Replies 1 · Jan 27, 2014

Replies: 1

Views: 1K

Chip carriers and sockets for low temperature

Aug 29, 2012 · Replies 7 · Jan 27, 2014

Replies: 7

Views: 9K

Weak in Circuit Analysis what to do?

Jan 24, 2014 · Replies 5 · Jan 27, 2014

Replies: 5

Views: 5K

Expert PCB Design Services for Small Business Start Up in 2012

Jan 26, 2014 · Replies 1 · Jan 26, 2014

Replies: 1

Views: 2K

Dielectric polarization and capacitance

Jan 25, 2014 · Replies 2 · Jan 26, 2014

Replies: 2

Views: 2K

Earthing systems and other things

Jan 25, 2014 · Replies 10 · Jan 26, 2014

Replies: 10

Views: 3K

Where does this voltage come from?

Jan 24, 2014 · Replies 6 · Jan 26, 2014

Replies: 6

Views: 3K

Sending signals from laptop wifi adapter?

Jan 25, 2014 · Replies 2 · Jan 26, 2014

Replies: 2

Views: 2K

How Do I Build a 10-LED Light String with 5W Hyper Violet LEDs?

Jan 23, 2014 · Replies 3 · Jan 26, 2014

Replies: 3

Views: 2K

Gyroscope Measurement and Angular Rates

Aug 15, 2013 · Replies 7 · Jan 24, 2014

Replies: 7

Views: 10K

What I thought was a simple AC circuit with a Refrigerator & SSR

Jan 23, 2014 · Replies 5 · Jan 23, 2014

Replies: 5

Views: 2K

Project help 'Power quality in renewable energy systems'

Jan 23, 2014 · Replies 1 · Jan 23, 2014

Replies: 1

Views: 2K

Convert AC to DC | Julius' Guide | 400L Student

Jan 19, 2014 · Replies 6 · Jan 23, 2014

Replies: 6

Views: 4K

Do current sources stack with current?

Jan 22, 2014 · Replies 5 · Jan 22, 2014

Replies: 5

Views: 2K

RTD sensors calibration equipment

Jan 21, 2014 · Replies 7 · Jan 22, 2014

Replies: 7

Views: 3K

Confusion regarding pinch off voltage in a JFET

Jan 22, 2014 · Replies 1 · Jan 22, 2014

Replies: 1

Views: 21K

Is This Method Correct for Calculating Power Factor in Synchronous Generators?

Jan 20, 2014 · Replies 1 · Jan 22, 2014

Replies: 1

Views: 3K

What Is the Difference Between β (hFE) and βmax?

Jan 11, 2014 · Replies 10 · Jan 21, 2014

Replies: 10

Views: 2K

A paper about Planar Interferometer Arrays

Jan 20, 2014 · Replies 3 · Jan 21, 2014

Replies: 3

Views: 2K

3 Phase Rotor / Stator Swapping ?

Jan 17, 2014 · Replies 16 · Jan 21, 2014

Replies: 16

Views: 6K

Output Impedance: Understanding Current in 50 & 100 Ohm Systems

Jan 19, 2014 · Replies 9 · Jan 21, 2014

Replies: 9

Views: 3K

Building a homemade crank generator, but no voltage on voltmeter?

Jan 19, 2014 · Replies 9 · Jan 21, 2014

Replies: 9

Views: 3K

Should I Use A Microcontroller Or A Microcomputer?

Jan 19, 2014 · Replies 5 · Jan 21, 2014

Replies: 5

Views: 2K

Very silly question regarding DC motor

Jan 18, 2014 · Replies 9 · Jan 20, 2014

Replies: 9

Views: 2K

How Do You Design a Linear Generator for High Frequency Movements?

Jan 20, 2014 · Replies 2 · Jan 20, 2014

Replies: 2

Views: 2K

Electronic Books: Recommended for C&I Apprentices

Jan 15, 2014 · Replies 4 · Jan 20, 2014

Replies: 4

Views: 2K

How is giant magnetoresistance utilized in computer memory storage?

Jan 13, 2014 · Replies 6 · Jan 20, 2014

Replies: 6

Views: 2K

Counter torque, voltage and current

Jan 17, 2014 · Replies 5 · Jan 20, 2014

Replies: 5

Views: 7K

Electromagnet lifting capability increasing unexpectedly

Jan 18, 2014 · Replies 9 · Jan 19, 2014

Replies: 9

Views: 2K

EMG vs ECG Electrodes: Can ECG be Used as a Substitute?

Jan 18, 2014 · Replies 1 · Jan 18, 2014

Replies: 1

Views: 2K

Power, voltage and current gain

Jan 18, 2014 · Replies 5 · Jan 18, 2014

Replies: 5

Views: 2K

LED Matrix for High Power Saucer Rocket | 16x8 Pattern Flashing Lights

Jan 17, 2014 · Replies 2 · Jan 17, 2014

Replies: 2

Views: 2K

Need to step up voltage from 1.2V to 5V in seebeck pelteir plate setup

Jan 17, 2014 · Replies 1 · Jan 17, 2014

Replies: 1

Views: 2K

Can NMOS Function with Negative Vds?

Jan 16, 2014 · Replies 1 · Jan 16, 2014

Replies: 1

Views: 10K

How to safely create static electricity from AC current

Jan 15, 2014 · Replies 6 · Jan 16, 2014

Replies: 6

Views: 2K

Converting split supply amplifier to single supply

Jan 14, 2014 · Replies 6 · Jan 16, 2014

Replies: 6

Views: 3K

DC Motor Field Current Speed Control

Jan 15, 2014 · Replies 3 · Jan 15, 2014

Replies: 3

Views: 3K

Calculating Resistivity of Doped Si: P and As Substrate Comparison"

Jan 12, 2014 · Replies 1 · Jan 15, 2014

Replies: 1

Views: 2K

Smaller Antennas, Higher Frequencies: The Need for Size Reductions

Jan 14, 2014 · Replies 4 · Jan 15, 2014

Replies: 4

Views: 3K

Best Substrate for VHF applications

Jan 14, 2014 · Replies 1 · Jan 15, 2014

Replies: 1

Views: 2K

How can my motors sharpen my knives?

Jan 14, 2014 · Replies 1 · Jan 14, 2014

Replies: 1

Views: 2K

Calculate Coaxial Cable Loss & Input Impedance at 1 MHz

Jan 6, 2014 · Replies 81 · Jan 14, 2014

3

Replies: 81

Views: 10K

VFD use to maintain constant flux

Jan 13, 2014 · Replies 1 · Jan 14, 2014

Replies: 1

Views: 2K

Induction Motor Speed: Electrical vs Mechanical

Jan 10, 2014 · Replies 2 · Jan 13, 2014

Replies: 2

Views: 3K

How can I use a pressure sensor to detect drum hits for my lighting rig?

Dec 20, 2013 · Replies 32 · Jan 13, 2014

2

Replies: 32

Views: 9K

Servo Mechanism to initiate movement of an electric motor trolley

Jan 10, 2014 · Replies 8 · Jan 12, 2014

Replies: 8

Views: 2K

Calculating electrode current density

Jan 12, 2014 · Replies 2 · Jan 12, 2014

Replies: 2

Views: 3K

Understanding Cell Phone Wiring for House Hold Phone Jacks

Jan 12, 2014 · Replies 2 · Jan 12, 2014

Replies: 2

Views: 2K

Explain my capacitor discharge math discrepancy

Jan 10, 2014 · Replies 4 · Jan 11, 2014

Replies: 4

Views: 2K

Best practices using 555/4017 & many LEDs

Aug 1, 2012 · Replies 75 · Jan 11, 2014

3

Replies: 75

Views: 20K

Electrical Engineering

Electrical engineering is a discipline within engineering that focuses on the study and application of electricity, electronics, and electromagnetism. Electrical engineers design, develop, and maintain systems and devices that utilize electrical power, ranging from small-scale electronics to large power distribution networks. The field encompasses a diverse range of technologies, including telecommunications, signal processing, control systems, and power generation.

Electrical engineers play a crucial role in advancing technology, contributing to innovations such as computers, smartphones, renewable energy systems, and electric vehicles. Their work involves a combination of theoretical understanding, mathematical modeling, and practical application to create solutions that power the modern world.

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