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...

Threads

PSPICE Error when trying to run simulation

  • ammarb32
  • · Replies 7 ·
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7

Using Electromagnet to Detect Steel Door

  • Michael P C
  • · Replies 28 ·
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28
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7

Understanding CTs and PTs in SLD

  • khanpk
  • · Replies 2 ·
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2

How does negative feedback affect op-amp response?

  • kidsasd987
  • · Replies 13 ·
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13

Help with my math in this 2nd order audio filter circuit

  • INTP_ty
  • · Replies 6 ·
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6

Why isn't Reactive Power defined as Q = S - P ?

  • vintageplayer
  • · Replies 76 ·
3
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76

Can this electric motor generate electricity?

  • MisterNeo
  • · Replies 1 ·
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1

Do Joule Thief's Work With Supercapacitors

  • Puglife
  • · Replies 13 ·
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13

Depletion zone and current in forward-biased PN junction

  • goodphy
  • · Replies 3 ·
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3

How to analyze AC using radians and degrees

  • yosimba2000
  • · Replies 7 ·
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7

How can i generate an 8 hertz AC current from 60 hz AC

  • Carlton Brown
  • · Replies 5 ·
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5

How Can I Improve My Homemade Wind Turbine's Charging System?

  • Alexb91
  • · Replies 1 ·
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1

Protect Your Amplifier Modules with RF Pre-Amp Protection

  • dnyberg2
  • · Replies 8 ·
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8

Is the Hot Rod Deluxe III Schematic Helpful for Troubleshooting My Amp?

  • Planobilly
  • · Replies 7 ·
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7

Expressing Phase in Degrees: Benefits & Challenges

  • brainbaby
  • · Replies 12 ·
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12

Thermoelectric Modules: Heat/Cold Ratio for Voltage

  • old Bozo
  • · Replies 2 ·
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2

What Diode Has a Low Turn-On Voltage and Through-Hole Termination?

  • STEMucator
  • · Replies 5 ·
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5

Understanding 132kV Transformer Incomer CTs and Their Core Numbers

  • khanpk
  • · Replies 3 ·
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3

Outout difference between different size piezo disc

  • erashish14
  • · Replies 1 ·
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1

Understanding Harmonic Resonance and Filtering in Power Systems

  • rajukrishna
  • · Replies 2 ·
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2

Suggestion for an inexpensive non-linear load for 230/115?

  • Robbiel Factor
  • · Replies 13 ·
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13

Hobbyist Electronic Bench Ground Setup: Best Way

  • Burntresistor
  • · Replies 29 ·
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29

Why are relays used in circuits?

  • Metals
  • · Replies 14 ·
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14

Number of wire turns to make a Magnet Generator

  • justiny92
  • · Replies 6 ·
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6

Do we get 2x the frequency when doing P=VI for AC Circuits?

  • yosimba2000
  • · Replies 6 ·
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6

Can you explain this amplifier circuit to me?

  • wannab
  • · Replies 10 ·
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10

Electron Density when Introducing Impurites

  • PeoplesChamp
  • · Replies 1 ·
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1

Clean way to run 3 phase induction motor

  • tim9000
  • · Replies 13 ·
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13

What is the problem with leakage inductance?

  • tim9000
  • · Replies 16 ·
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16

What's the equivalent resistance between point A and B?

  • oliverlines1234567
  • · Replies 16 ·
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16

BJT Switch - Circuit Simulation

  • dwn
  • · Replies 5 ·
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5
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2

Charging Super Capacitor w/Buck Converter: Max Voltage Draw?

  • Puglife
  • · Replies 5 ·
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5

Inductance of a straight conductor

  • cnh1995
  • · Replies 6 ·
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6

DC voltage startup surge in my SMPS

  • Salvador
  • · Replies 13 ·
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13

Does a photo-resistor create an AC current?

  • grahas
  • · Replies 12 ·
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12

Variable speed control of multiple dc motors

  • dubya_80
  • · Replies 28 ·
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28

Can I Build a 120V Switch Mode Power Supply?

  • Puglife
  • · Replies 8 ·
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8

The Energy of Railgun's projectile

  • Yongho Ahn
  • · Replies 6 ·
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6

Create a Simple Indicator System for a 6V Toy Car

  • QuincyLoony
  • · Replies 5 ·
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5

Help with current flow, voltage, resistors in basic circuit

  • marciokoko
  • · Replies 21 ·
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21

Small DC motor run by a super capacitor - Is it possible?

  • helpalad
  • · Replies 18 ·
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18

Microphone (Analog) to Ethernet (Digital) to Speaker (Analog) system

  • bergen89
  • · Replies 13 ·
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13

Odd voltage reading from digital volt meter

  • Idea04
  • · Replies 15 ·
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15

How can I calculate the delay time of a choke?

  • BHY-BK
  • · Replies 8 ·
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8

Induction heating by AC magnetic field-magnetic hyperthermia

  • Egegurtan
  • · Replies 2 ·
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2

Plotting Bode of Resistor w/ DC Source: 20*log(0)

  • ujjval rathod
  • · Replies 12 ·
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12

How are phasors obtained from real values in AC?

  • yosimba2000
  • · Replies 1 ·
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1

What is wrong with my oscilloscope?

  • Complex glides
  • · Replies 7 ·
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7

Questioning RF Frequency & Filters

  • ujjval rathod
  • · Replies 3 ·
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3

Coilgun capacitor charging circuit questions

  • PRIDES
  • · Replies 2 ·
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2

How Do You Sum Two DC Voltages in a Laser Spectroscopy Circuit?

  • Tom_M
  • · Replies 3 ·
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3

DC-voltage sweep @CST Design Studio

  • RF_Pif
  • · Replies 2 ·
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2

Impedance matching and tuning RF coil

  • uzi kiko
  • · Replies 2 ·
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2

Book or free video course on alternator design

  • Dilan Vermaak
  • · Replies 2 ·
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2

Using Peltier Plates for heating

  • juyoung518
  • · Replies 5 ·
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5

Measuring low Electromagnetic field

  • msarker
  • · Replies 6 ·
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6

What does more/less voltage mean?

  • Guidestone
  • · Replies 17 ·
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17

Transistor 2N4401: DC Current Gain (hFE) for 5V/60mA

  • lasha1
  • · Replies 7 ·
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7

Using a Servo motor as load on a system

  • Peter8899
  • · Replies 1 ·
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1

How does a Wheatstone Bridge work?

  • Ravyan Asro
  • · Replies 18 ·
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18

What is the difference between AA and AAA batteries?

  • sivaswetha
  • · Replies 8 ·
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8

Difference between ESC and brushless motor controller?

  • DanT29
  • · Replies 2 ·
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2

Add currents with same frequency but different phase?

  • yosimba2000
  • · Replies 3 ·
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3

Can I Program a Cell Phone Charger to Optimize Battery Life?

  • Brandon Moore
  • · Replies 2 ·
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2

HMI -> Microcontroller? -> PCB I/O

  • Bikkehaug
  • · Replies 7 ·
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7

Understanding 10GHZ CPU Technology: Obstacles and Resources

  • MathematicalPhysicist
  • · Replies 13 ·
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13

What do Red and Green Indicator Lamps Mean for Machinery Operation?

  • Mongster
  • · Replies 12 ·
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12

Is it normal for a new phone battery to have zero voltage?

  • camerart
  • · Replies 13 ·
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13

Need help with generating a uniform weak magnetic field

  • Howard Bell
  • · Replies 2 ·
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2

Proof of Wye-Delta Transform Doesn't Make Sense

  • yosimba2000
  • · Replies 7 ·
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7

What exactly is a sample in terms of sample rate (audio)

  • hypnoticdesign
  • · Replies 18 ·
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18

Reactive Power Comp: Understand, Compensate & Why Needed

  • DjMadness
  • · Replies 4 ·
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4

Ignition coil HV pulse on oscilloscope?

  • BHY-BK
  • · Replies 7 ·
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7

Line and neutral in spike guard

  • jaus tail
  • · Replies 28 ·
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28

How is current direction in transformer determined and why?

  • goodphy
  • · Replies 5 ·
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5

How to Determine the Specifications of Unlabeled D/C Generators?

  • BonesSheppard
  • · Replies 1 ·
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1

Just spent $20 on an inductor to be used with a $12 speaker?

  • INTP_ty
  • · Replies 6 ·
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6

Single Phase Transformer Losses -- Hysteresis, Eddy Current Constants

  • ZenSerpent
  • · Replies 4 ·
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4

Changing motor speed with external magnets

  • naeem shaik
  • · Replies 7 ·
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7

Nichrome wire overheating failure in standard air heater

  • situationiste
  • · Replies 8 ·
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8

Series voltage source vs parallel voltage source

  • WIlliam Powell
  • · Replies 1 ·
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1

Power backups for fibre optic networks

  • philrainey
  • · Replies 2 ·
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2

Drive a 12 Ohm, 50mH Transformer Coil with 12V @ 1A

  • BHY-BK
  • · Replies 10 ·
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10

Is my lecturer incorrect or did I just misunderstand? (sound quality)

  • OrangeMelon
  • · Replies 15 ·
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15

Is the coil the only viable shape for an electric engine ?

  • zunf
  • · Replies 2 ·
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2

Why does current remain the same in a series circuit?

  • marciokoko
  • · Replies 10 ·
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10
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12

What causes screeching noise in phone adapter transformers?

  • vin300
  • · Replies 7 ·
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7

How do you read the ratings of a relay?

  • HeyAwesomePeopl
  • · Replies 4 ·
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4

Can USB Ports Be Converted to Power a 12V 1Amp Device?

  • Jason porter
  • · Replies 14 ·
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14

Distribution Switchboard -- 3-phase 4-Wire 120/208V: 1200 A Main Distribution

  • sandy.bridge
  • · Replies 8 ·
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8

Transformer for CDI ignition power supply

  • mynode
  • · Replies 1 ·
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1

Can Natural Electrical Circuits Be Found in Nature?

  • edenenix15
  • · Replies 12 ·
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12

What sort of EM field is produced in an induction heater?

  • grim3271
  • · Replies 20 ·
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20
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4

Can a Minn Kota trolling motor be used as an electric generator?

  • sea kay
  • · Replies 10 ·
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10

Will External Magnets Affect PMDC Motor Armature Rotation?

  • naeem shaik
  • · Replies 4 ·
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4

Testing 12V 62.5A PSUs - Using 9 2Ω 100W Resistors

  • totota
  • · Replies 17 ·
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17