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

Cell tower near window is it a problem?

  • sandiego
  • · Replies 2 ·
Replies
2

Earth pin in a standard UK plug.

  • tina-duncan
  • · Replies 11 ·
Replies
11

PC fan produces 200 Hz EM field synchronized to mains frequency

  • Ravaner
  • · Replies 2 ·
Replies
2

What equipment and costs for starting hobby electronics projects?

  • Mindscrape
  • · Replies 5 ·
Replies
5

High frequency alternating magnetic field generator

  • rashmie
  • · Replies 6 ·
Replies
6

Using a 555 timer as an analog frequency divider?

  • crono1009
  • · Replies 3 ·
Replies
3

Converting three-phase into single/split phase

  • Higgs Boson
  • · Replies 4 ·
Replies
4

What Happens When One Side of a Wire Is Connected to a Battery?

  • Bassalisk
  • · Replies 11 ·
Replies
11

Unit Step Function U(t): No Transient Signals

  • russel.arnold
  • · Replies 1 ·
Replies
1

Minimization of a Multi Output Circuit

  • carlodelmundo
  • · Replies 1 ·
Replies
1

Calculating a frequency offset using a PIC

  • Bryan_S
  • · Replies 2 ·
Replies
2

Current and Voltage from photovoltic cells

  • HyperSniper
  • · Replies 2 ·
Replies
2

How to reverse the action of a small 12V DC MOtor

  • ja7703a
  • · Replies 3 ·
Replies
3

Sun tracker motor won't respond to sunlight with two photovoltaic cells

  • tina-duncan
  • · Replies 2 ·
Replies
2

Differences between 3phase and 6 phase systems

  • yashar_g
  • · Replies 2 ·
Replies
2

How to make a 9.6V battery heat nichrome wire longer than a minute

  • tkyleus
  • · Replies 2 ·
Replies
2

Is there such a thing as a inverse varistor?

  • kmarinas86
  • · Replies 6 ·
Replies
6

Proto board with gold plated contacts

  • JerryG
  • · Replies 1 ·
Replies
1
Replies
3

Wide Range Strain Indicator Units

  • sean882
  • · Replies 1 ·
Replies
1

Op-amp filters in a finger plethysmograph circuit

  • integrant2
  • · Replies 7 ·
Replies
7

Calculating Irradiance from BPW21R Photodiode Current

  • pochd
  • · Replies 3 ·
Replies
3

Design a Portable Water Warmer for College Project

  • screamer
  • · Replies 3 ·
Replies
3

What causes of voltage runaway in series LC resonant circuit?

  • HMS-776
  • · Replies 3 ·
Replies
3

What is the equivalent turn ratio when connecting 2 transformers in series?

  • tefavolc
  • · Replies 12 ·
Replies
12

How to deal with battery in circuit

  • tefavolc
  • · Replies 2 ·
Replies
2
Replies
3

How do electrons lose energy passing through a component?

  • NeilWallace
  • · Replies 6 ·
Replies
6

PCI express for board-to-board link.

  • fiedel
  • · Replies 3 ·
Replies
3

Information Theory Applied to Audio Signal Processing/Broadcasting

  • kususe
  • · Replies 5 ·
Replies
5

Measuring voltage when circuit resistance exceeds voltmeter resistance

  • Idea04
  • · Replies 3 ·
Replies
3

RFID reader for multi-tag detection with computer interface

  • ajaustin12
  • · Replies 1 ·
Replies
1

Electromagnetic sensor types and how they work

  • Great soul
  • · Replies 4 ·
Replies
4

Buck Converter High-Side Switch

  • Fish4Fun
  • · Replies 1 ·
Replies
1

Common Cathode Diodes: Safe to Use in Parallel?

  • DragonPetter
  • · Replies 3 ·
Replies
3

How Should I Begin Programming My PIC16F628A Bluetooth Remote Control Car?

  • jenelann
  • · Replies 1 ·
Replies
1

Purpose of circuit components in this schematic

  • UR_Correct
  • · Replies 7 ·
Replies
7

Control Circuit (9VDC) For 12VDC Circuit

  • Darendor
  • · Replies 11 ·
Replies
11

New Technology: Scientists Create 'Anti-Laser' Device

  • MacLaddy
  • · Replies 1 ·
Replies
1

Convert Power Supply to 12V Lab Power Supply

  • looklikeaflip
  • · Replies 15 ·
Replies
15

Voltage scaling device with temperature lookup table

  • Marky522
  • · Replies 1 ·
Replies
1

Looking for a low/no current alternative to a SPST relay

  • zeb
  • · Replies 20 ·
Replies
20

What can reflect, block or neutralize magnetism from a magnet?

  • sameev29
  • · Replies 1 ·
Replies
1

Can a power factor correction device improve weak household voltage?

  • romeff00
  • · Replies 10 ·
Replies
10

Should I Pursue Graduate Studies in Physics or Electrical Engineering?

  • tamtam402
  • · Replies 6 ·
Replies
6

How to install new lights in an automobile

  • Pagedown
  • · Replies 3 ·
Replies
3

FFT of a signal (non constant time)

  • mcodesmart
  • · Replies 3 ·
Replies
3

Why don't superconductors emit a lot of heat?

  • osnarf
  • · Replies 4 ·
Replies
4

Why does DTFT use both capital omega and e^(j*omega) notation?

  • Jammin_James
  • · Replies 1 ·
Replies
1

Remote controlled car - Bluetooth Controlled

  • Shahil
  • · Replies 6 ·
Replies
6

Kit for Art of Electronics (Horowitz and Hill)?

  • Simfish
  • · Replies 6 ·
Replies
6

Delta wye connection using 3 small transformers

  • sauce6358
  • · Replies 5 ·
Replies
5

How can I create a motion sensitive toy that lights up and makes sounds?

  • nuclear-rabbi
  • · Replies 2 ·
Replies
2

Why is the bulk sometimes not connected to the source in MOSFET symbols?

  • Turin231
  • · Replies 3 ·
Replies
3

Invert Battery and Maintaining Low Noise

  • dmorris619
  • · Replies 4 ·
Replies
4

Electric / thermal mineral separation.

  • ColdGold
  • · Replies 1 ·
Replies
1

Circuit Question (Purpose of the Resistors)

  • yUNeeC2
  • · Replies 2 ·
Replies
2

Is it true that the voltage at a point means the quantity of charge at

  • amaresh92
  • · Replies 3 ·
Replies
3

How should I properly supply power to the DAC813?

  • Nah_Roots
  • · Replies 1 ·
Replies
1

Which Light Bulb Lights Up First in a Circuit?

  • Bassalisk
  • · Replies 14 ·
Replies
14

What do burst duty, burst frequency and dead time mean in SMPS?

  • rama1001
  • · Replies 3 ·
Replies
3

Direct connection of two batteries

  • kimmy510
  • · Replies 1 ·
Replies
1

Questions for practicing electrical engineers about careers

  • haroanarchist
  • · Replies 1 ·
Replies
1

Operational Amplifier: How Does It Work?

  • ali297
  • · Replies 3 ·
Replies
3

How can we power -48 VDC device

  • dufferdev
  • · Replies 15 ·
Replies
15

Are Mega Testers Accurate for Testing Puck Thyristors?

  • roro36
  • · Replies 6 ·
Replies
6

What is the difference between a Preamplier EDFA and a Booster EDFA

  • narra
  • · Replies 1 ·
Replies
1

Input and Output resistance(CE amplifier)

  • Mathslova
  • · Replies 24 ·
Replies
24

Seebeck Effect applied to Fire?

  • GoldenTurtle
  • · Replies 7 ·
Replies
7

Regulated vs Unregulated regrading to SMPS

  • rama1001
  • · Replies 9 ·
Replies
9

Simple Transmission Line Question

  • HasuChObe
  • · Replies 4 ·
Replies
4

How Does Cable Size Affect Voltage Drop in Three-Phase Systems?

  • lukas86
  • · Replies 9 ·
Replies
9

Memory in logic gates for specified time intervals

  • thespaceman
  • · Replies 2 ·
Replies
2

What are neutral wires and their colours?

  • sayed5555
  • · Replies 4 ·
Replies
4

Calculating Energy Per Bit from Symbols Constellation

  • kususe
  • · Replies 1 ·
Replies
1

How does bias affect the depletion region width in a p-n junction?

  • skweiler
  • · Replies 6 ·
Replies
6

Designing a PIR Motion Sensor w/ BC-547 Transistor

  • suryakalpo
  • · Replies 1 ·
Replies
1

Power loss and voltage drop in a 1 MW transmission line

  • mathological
  • · Replies 10 ·
Replies
10

5VDC sgnl to 24VDC sgnl using a transistor

  • dgeccles
  • · Replies 9 ·
Replies
9

Multiple Energy Sources - Analytical Solution

  • FrankST
  • · Replies 2 ·
Replies
2

Charging a lithium ion battery pack with a thermoelectic generator

  • Pooty
  • · Replies 2 ·
Replies
2

Correcting Voltage Drop by Adding Resistor L Pad

  • Idea04
  • · Replies 3 ·
Replies
3

Can One Secondary Transformer Power Multiple Outputs on a DC Power Supply?

  • Jiggy-Ninja
  • · Replies 16 ·
Replies
16

Audio Distortion With and Increase in the length (NOOB)

  • bkendra5
  • · Replies 2 ·
Replies
2

Oscilloscope: Applying AC Voltage to a Circuit

  • herbgriffin
  • · Replies 2 ·
Replies
2

Why does ohm measure current produced rather than current prevented?

  • Femme_physics
  • · Replies 5 ·
Replies
5

Does resistance go up or down with an increase in temperature?

  • Femme_physics
  • · Replies 6 ·
Replies
6

Piezo lighter voltage measurements are unreliable

  • wushumaster
  • · Replies 3 ·
Replies
3

SNMP protocol and microcontroller

  • ElectroPhysics
  • · Replies 1 ·
Replies
1

Building a Sensor Circuit to Measure High Temperatures

  • lakmalp
  • · Replies 1 ·
Replies
1

Fastest modulation: laser diode vs LED

  • fisico30
  • · Replies 1 ·
Replies
1

The point of alternating currents?

  • Femme_physics
  • · Replies 14 ·
Replies
14

Standards for separation distance between electrical and data cables

  • happy.smiler
  • · Replies 3 ·
Replies
3
Replies
1

Discharging a high voltage capacitor using a low voltage source?

  • seahs
  • · Replies 6 ·
Replies
6

What do the markings on a capacitor mean?

  • justlearning
  • · Replies 4 ·
Replies
4

BJT implementation of a flip flop circuit

  • kuchun
  • · Replies 6 ·
Replies
6

Where Can I Find a Connector for a 40kv 15ma High Voltage Power Supply?

  • Drakkith
  • · Replies 5 ·
Replies
5

Replacing LED Bulbs with Different Wavelengths: How Difficult Is It?

  • chemaddict
  • · Replies 3 ·
Replies
3

Double Pole Switches: Do They Have an Off Position?

  • amrisha16
  • · Replies 1 ·
Replies
1