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

Driving three LT5504 receivers with a single VCO local oscillator

  • rdawe
  • · Replies 8 ·
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8

Linear solenoid design for 300lb push at 12V with 1/2 inch stroke

  • linkss56
  • · Replies 15 ·
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15

Why does the top surface of a Silicon Die measure close to 0 ohms?

  • austinuni
  • · Replies 5 ·
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5

Solve for phase-to-neutral voltage in terms of phase-to-phase voltage

  • EQVan
  • · Replies 14 ·
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14

Why Does a Circa 1905 Solenoid Have Two Different Wires?

  • flynnr2
  • · Replies 31 ·
2
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31

How do pull up and pull down resistors remove electrical noise?

  • kolleamm
  • · Replies 46 ·
2
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46
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22

Lectro Power Saver Review: $30 Plug-In Electricity Savings

  • Meubus
  • · Replies 5 ·
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5

Basic NMOS+Zener Current Source Test

  • Helena Wells
  • · Replies 12 ·
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12

50/62.5 MVA, 154/33 kV power transformer design project

  • denizd
  • · Replies 1 ·
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1

BJT common collector Colpitts oscillator

  • Helena Wells
  • · Replies 43 ·
2
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43

Resistive heating power AC vs rectified AC/DC

  • artis
  • · Replies 10 ·
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10

Kilojoules per kilo to watts per second

  • Ripcrow
  • · Replies 16 ·
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16

Charging an iphone with macbook charger

  • Lobotomy
  • · Replies 2 ·
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2

How to create an Electric Field?

  • BhargavRJ
  • · Replies 5 ·
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5

Gaussian kernel in image processing

  • PainterGuy
  • · Replies 11 ·
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11

Coin battery in computer drains overnight

  • Averagesupernova
  • · Replies 53 ·
2
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53

Two 95W light bulbs in series dissipate less power than expected

  • Galloleo
  • · Replies 22 ·
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22

Is the Hall Effect Weaker in Semiconductors Due to Limited Energy States?

  • Helena Wells
  • · Replies 1 ·
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1

Improving the speed of induction charging

  • Lobotomy
  • · Replies 10 ·
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10

Synchronous generator variable speed and constant excitation

  • Vanguard
  • · Replies 3 ·
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3

Does DC or AC work best for charging most industrial batteries?

  • narayan821
  • · Replies 4 ·
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4

Line and Phase voltages differences

  • PhysicsTest
  • · Replies 1 ·
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1

Question on MOSFET modes of operation

  • Helena Wells
  • · Replies 1 ·
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1

Magnetic Saturation of A Piece of Steel

  • Yrton
  • · Replies 2 ·
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2

Minimum voltage supplied to motor windings

  • PhysicsTest
  • · Replies 7 ·
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7

How are pseudo ranges obtained?

  • plain stupid
  • · Replies 15 ·
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15

Relationship between electric and magnetic fields

  • Voncarsteine
  • · Replies 28 ·
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28

What does an oscillator do in a toothbrush

  • Lobotomy
  • · Replies 6 ·
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6

Synchronous motor rated power, torque, speed, voltage and current parameters

  • PhysicsTest
  • · Replies 9 ·
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9

Driving a motor with CC2540 Bluetooth IC and real-time clock

  • HighTechPower
  • · Replies 1 ·
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1

AC Circuit Analysis: Solving Example with Confusing Concepts

  • bardia sepehrnia
  • · Replies 3 ·
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3

Should a Big Inductor be Added to a Hartley Oscillator Design?

  • Helena Wells
  • · Replies 36 ·
2
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36

Current Capacity of short AWG 4 wire

  • Cobul
  • · Replies 14 ·
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14

Why do phone chargers cause radio interference?

  • Vrbic
  • · Replies 14 ·
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14
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9

Base-collector current in BJT Saturation

  • Helena Wells
  • · Replies 4 ·
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4

Why does a common collector circuit saturate without a base resistor?

  • Helena Wells
  • · Replies 10 ·
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10

Why does a transistor in saturation act like a short circuit?

  • Helena Wells
  • · Replies 5 ·
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5

How can I convert audio signals into pulses for radio transmission?

  • Snoopy1234
  • · Replies 20 ·
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20

Claude Shannon "The Bit Player" movie free screening

  • scottdave
  • · Replies 6 ·
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6

Is it better to buy a bench PSU, or build one?

  • theycallmevirgo
  • · Replies 9 ·
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9
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4

Why measure phase current Ia differently from Ib and Ic with shunt resistors

  • PhysicsTest
  • · Replies 6 ·
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6
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8

Gate driving voltage for GaN MOSFETS

  • Ntip
  • · Replies 6 ·
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6

Electrical field between conductors of the same potential

  • pranav p v
  • · Replies 19 ·
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19

Using complex numbers to model 3 phase AC

  • Guineafowl
  • · Replies 7 ·
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7

Can Two RF Signal Sources Connected in Parallel Increase Signal Amplitude?

  • hilbert2
  • · Replies 16 ·
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16

Almost Plausible Solar Takeover Plan

  • anorlunda
  • · Replies 108 ·
4
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108

Transformer load reading calculation

  • ope0409
  • · Replies 4 ·
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4

Repulsion induction motor question

  • SIDNEYP
  • · Replies 7 ·
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7

How Is Thevenin Resistance Calculated in R1 Parallel to R2 Configuration?

  • theycallmevirgo
  • · Replies 3 ·
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3

Using phase difference to find the angle of a signal

  • Euan12345
  • · Replies 16 ·
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16

Transistor base voltage calculation

  • marz
  • · Replies 9 ·
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9

Simulating a MAGLEV train with COMSOL

  • berry123
  • · Replies 3 ·
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3

Finding the resonant frequency of this "discriminator" demod circuit.

  • adriaan
  • · Replies 2 ·
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2

220 Three Phase to 220 Single Phase

  • albert0510
  • · Replies 8 ·
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8

Experiences with entry-level bench equipment manufacturers

  • theycallmevirgo
  • · Replies 22 ·
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22

Right motor on Quickie 646 SE overheating and smoking at high speed

  • ouichaise
  • · Replies 20 ·
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20

System design for charging battery from turbine alternator

  • yahastu
  • · Replies 8 ·
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8

Cheap and fast repair project suggestions

  • theycallmevirgo
  • · Replies 8 ·
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8

How to make a custom UPS using an old PC power supply and 18650 batteries?

  • ghowriter
  • · Replies 7 ·
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7

Concept of 'encirclement' in Nyquist plot

  • cnh1995
  • · Replies 1 ·
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1
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3

Capacitor type selection for power converter

  • Ntip
  • · Replies 15 ·
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15

Battery Powered Electric Motor and Charging Requirements

  • Fred Gandolfo
  • · Replies 5 ·
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5

Brushless generator design with permanent magnets

  • AxeGrinder
  • · Replies 3 ·
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3

What is the impedance of the human body and why does it vary?

  • Nathi ORea
  • · Replies 7 ·
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7

Carrying capacity of power grids - USA and others

  • Stephen Tashi
  • · Replies 5 ·
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5
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7

Can a Resistor Simulate a Light Bulb Load for LED Bulb Installation?

  • Mikel_NY
  • · Replies 2 ·
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2

Why are servos rated 12V but tested at 14V?

  • Mzzed
  • · Replies 3 ·
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3

Left Hand Rule Applied to a Winding

  • jake jot
  • · Replies 118 ·
4
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118

Need Heavy Duty Transistors for Controlling Larger Motors with PWM?

  • kolleamm
  • · Replies 18 ·
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18

Circular antenna array formula

  • Unconscious
  • · Replies 15 ·
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15

Papers on the Mathematical Basis for Using PWM for Sine-Wave Generation

  • maxwells_demon
  • · Replies 38 ·
2
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38

Why do we need to increase voltage when overclocking PC components?

  • Delta2
  • · Replies 14 ·
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14

Arduino and zero crossing — Non-uniform spikes in interrupt signal

  • Wrichik Basu
  • · Replies 5 ·
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5

How is the MOC 3052 triac driver optocoupler supposed to work?

  • Wrichik Basu
  • · Replies 4 ·
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4

Is 532nm the Optimum Wavelength for Atmospheric Particle Tracking?

  • pyroartist
  • · Replies 4 ·
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4

RTD PT100 resistance dropping to 78-84 ohms in Wheatstone bridge

  • asherraph
  • · Replies 27 ·
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27

Interrupts in Arduino not working (for detecting zero crossing)

  • Wrichik Basu
  • · Replies 7 ·
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7

Magnetic levitation board not working

  • HighTechPower
  • · Replies 12 ·
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12

Detecting a metallic object through solid metal

  • busarider29
  • · Replies 7 ·
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7

What Defines a Scalar Field vs a Vector Field?

  • Ntip
  • · Replies 4 ·
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4

Breaking hard ground with motors

  • nduka-san
  • · Replies 32 ·
2
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32

What determines the frequency of an RF cavity?

  • artis
  • · Replies 6 ·
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6

Circuit theory - Resistor function for dynamic non linear circuits

  • cianfa72
  • · Replies 1 ·
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1

Zero crossing detector for Arduino using 4N35 optocoupler

  • Wrichik Basu
  • · Replies 23 ·
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23

Field of a "pancake" coil in QI charger

  • Joseph M. Zias
  • · Replies 13 ·
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13

Pure Sine Wave Inverter using Two Lithium Ion Batteries

  • Cody1944
  • · Replies 29 ·
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29

Reflecting radio waves with reflective paper

  • EnergyInMotion
  • · Replies 12 ·
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12

Making a replacement Magnetic coil for my ride-on lawnmower

  • Pretorius
  • · Replies 6 ·
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6
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4

Finding Inductance and Mutual Inductance

  • Ntip
  • · Replies 8 ·
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8

Does more winding turns increase alternator voltage output?

  • John1397
  • · Replies 6 ·
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6

Electronic video clips that are not common knowledge, yet crucial

  • bhs67
  • · Replies 16 ·
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16

How do I know the current's ampere value when it fluctuates rapidly?

  • kurisu
  • · Replies 10 ·
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10
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10