Electrical Engineering Forum

Post thread
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...
Trying to get a microphone to produce a signal
  • · Replies 11 ·
Replies
11
Views
2K
What should I consider when searching for a high voltage power supply?
  • · Replies 4 ·
Replies
4
Views
2K
What type of electrical contact joint is this?
  • · Replies 15 ·
Replies
15
Views
3K
What Surprising Discoveries Can Be Made from Decapsulating Phone Chips?
  • · Replies 6 ·
Replies
6
Views
3K
Share a power supply between two devices
  • · Replies 8 ·
Replies
8
Views
3K
I am trying to build a radio to transmit Morse code
  • · Replies 16 ·
Replies
16
Views
4K
555 timer, 50% duty cycle astable, run from 5V
  • · Replies 38 ·
2
Replies
38
Views
23K
How to optimize spark gap Tesla coils?
  • · Replies 6 ·
Replies
6
Views
4K
Electromagnetic fields are polarised when leaving a dipole antenna....
  • · Replies 13 ·
Replies
13
Views
3K
Replacing a remote with a switch -- voltage drop problems :(
  • · Replies 2 ·
Replies
2
Views
2K
How strong should an electromagnet be to elevate a 1kg mass?
  • · Replies 8 ·
Replies
8
Views
3K
Effect of cross section shape of an iron core in a solenoid?
  • · Replies 11 ·
Replies
11
Views
4K
Loading/charge time of an electromagnet
  • · Replies 24 ·
Replies
24
Views
5K
Reaction or Reactionless -- Acceleration force on a microwave antenna
  • · Replies 27 ·
Replies
27
Views
3K
How do motors on gimbals work? (2-axis camera mount application)
  • · Replies 6 ·
Replies
6
Views
4K
How to introduce a phase shift in an AC circuit
  • · Replies 17 ·
Replies
17
Views
7K
Choosing the right ESC for a Brushless motor
  • · Replies 9 ·
Replies
9
Views
5K
(Moonbounce) Can I use moon as a satellite for IOT?
  • · Replies 15 ·
Replies
15
Views
3K
How many times I can charge my 5000mah mobile from 12 volt 7ah battery?
  • · Replies 4 ·
Replies
4
Views
10K
MOS capacitance when Vgs is negative
  • · Replies 2 ·
Replies
2
Views
4K
What limits the amount of renewable energy sources?
  • · Replies 35 ·
2
Replies
35
Views
6K
Understanding Basic Rectifiers: Question and Explanation
  • · Replies 5 ·
Replies
5
Views
3K
Need help in regulating +/-36V regulated supplies
  • · Replies 16 ·
Replies
16
Views
4K
Air conditioner fan not starting
  • · Replies 3 ·
Replies
3
Views
3K
Is it safe to be exposed to SHF or EHF for a very long time?
  • · Replies 14 ·
Replies
14
Views
4K
Understanding Capacitor Behavior for Noise Filtering?
  • · Replies 15 ·
Replies
15
Views
4K
Older electrolytic capacitor testing
  • · Replies 14 ·
Replies
14
Views
6K
How does mechanical torque affect generator volts and amps?
  • · Replies 2 ·
Replies
2
Views
8K
Shielding a wire from magnetic flux
  • · Replies 20 ·
Replies
20
Views
5K
Calculating the Power Dissipation of a Wire
  • · Replies 23 ·
Replies
23
Views
8K
Does the distance between substations affect the efficiency of electric trains?
  • · Replies 31 ·
2
Replies
31
Views
8K
How do I tell if the Wien bridge oscillator I built works
  • · Replies 7 ·
Replies
7
Views
4K
Solve Black Box Circuits w/ Switch & w/o Switch
  • · Replies 12 ·
Replies
12
Views
5K
PV Basics: Learn V(open circuit), Ishort, Fill Factor
  • · Replies 2 ·
Replies
2
Views
2K
What is the use of 0 Ohm resistors?
  • · Replies 22 ·
Replies
22
Views
8K
In AC analysis do I alternate the current and voltage?
  • · Replies 8 ·
Replies
8
Views
3K
Is Electric armour feasible with current technology?
  • · Replies 8 ·
Replies
8
Views
4K
Can you build an FM transmitter with a crystal oscillator
  • · Replies 12 ·
Replies
12
Views
10K
Do transistors only work with DC and not with AC?
  • · Replies 9 ·
Replies
9
Views
8K
Looking for a BJT with low collector leakage current
  • · Replies 15 ·
Replies
15
Views
7K
Home Brew RF dummy load showing reactance at higher frequencies
  • · Replies 24 ·
Replies
24
Views
10K
PV system with an array of 1500 watts
  • · Replies 11 ·
Replies
11
Views
4K
Deriving the impedance equation of reactive passive components
  • · Replies 16 ·
Replies
16
Views
5K
Can a transformer be grounded and any point in the winding?
  • · Replies 13 ·
Replies
13
Views
4K
How do I calculate how much power/current etc. is required?
  • · Replies 9 ·
Replies
9
Views
4K
Why 4 pins for the speaker connection on motherboards?
  • · Replies 3 ·
Replies
3
Views
11K
Charge and current, RMS or aritmethic mean?
  • · Replies 18 ·
Replies
18
Views
5K
Asking about the Vcc of some integrated circuits
  • · Replies 15 ·
Replies
15
Views
4K
Constant Current Source in Driving an RC Circuit
  • · Replies 6 ·
Replies
6
Views
8K
Parameters of a non-standard second-order transfer function
  • · Replies 1 ·
Replies
1
Views
4K
What happens when you flip the inputs of an op amp?
  • · Replies 78 ·
3
Replies
78
Views
16K
Calculating phasors from sensor readings
  • · Replies 8 ·
Replies
8
Views
4K
How to power up a DIY LED panel with a PC PSU?
  • · Replies 27 ·
Replies
27
Views
6K
Understanding Firmware and automation
  • · Replies 5 ·
Replies
5
Views
3K
Wheelchair motor, "Skid Steer" style control
  • · Replies 1 ·
Replies
1
Views
3K
Low noise AC-DC, DC-DC switchers for mixed signal analog I/O?
  • · Replies 6 ·
Replies
6
Views
3K
At what resistance does current cease to flow
  • · Replies 18 ·
Replies
18
Views
5K
Pattern Shielding for inductors in Integrated Circuits
  • · Replies 6 ·
Replies
6
Views
4K
What happens when injecting a current at different instants in an oscillator?
  • · Replies 1 ·
Replies
1
Views
2K
Network analyzer vs Spectrum analyzer
  • · Replies 6 ·
Replies
6
Views
4K
Voltage/Current variation in a motor
  • · Replies 8 ·
Replies
8
Views
4K
Could This Be a Strain Gauge from My Disassembled Scale?
  • · Replies 3 ·
Replies
3
Views
3K
Capacitor on ground connection of Comparator input
  • · Replies 19 ·
Replies
19
Views
6K
Is It Safe to Charge 18650 Lithium Ion Cells at 13.7 Volts?
  • · Replies 13 ·
Replies
13
Views
3K
AC to DC voltage doubler not working
  • · Replies 7 ·
Replies
7
Views
4K
Nonlinear transformer model for simulation in LTSpice
  • · Replies 5 ·
Replies
5
Views
6K
Problem with the Finite Element Method applied to Electrostatics
  • · Replies 6 ·
Replies
6
Views
4K
Can a Floating Voltage be Generated Without an Auxiliary Low Voltage Battery?
  • · Replies 18 ·
Replies
18
Views
6K
Rapidly Dissolving Anode - Seeking Advise To Puzzling Problem
  • · Replies 26 ·
Replies
26
Views
5K
Getting Started With Control Systems
  • · Replies 3 ·
Replies
3
Views
3K
What happens to the reflected wave when it gets back to the generator?
  • · Replies 24 ·
Replies
24
Views
6K
Need motor help with Electric Power Brush project for clearing snow
  • · Replies 11 ·
Replies
11
Views
4K
What Is the Difference Between Current and Voltage Amplifiers?
  • · Replies 17 ·
Replies
17
Views
5K
I need to interview an electrical engineer (School related)
  • · Replies 1 ·
Replies
1
Views
3K
Jammer Interference: Transmitter 1 & Receiver 2
  • · Replies 16 ·
Replies
16
Views
4K
Please could someone critique my circuit schematic (simple)
  • · Replies 6 ·
Replies
6
Views
3K
Power generated by a coil rotating in magnetic field
  • · Replies 3 ·
Replies
3
Views
5K
Hydrogen to AC -- From the Fuel Cell to the Grid
  • · Replies 10 ·
Replies
10
Views
3K
PDLC film on low voltage (3-6V)?
  • · Replies 11 ·
Replies
11
Views
7K
Linear behavior and dynamic behavior of a sensor
  • · Replies 1 ·
Replies
1
Views
3K
In need of VFD/Inverter to motor assistance please
  • · Replies 15 ·
Replies
15
Views
4K
A couple of questions about antennas, bandwidths and power
  • · Replies 26 ·
Replies
26
Views
5K
How to use a bench power supply
  • · Replies 9 ·
Replies
9
Views
4K
Puzzled by how the Voltage is the same across different points
  • · Replies 9 ·
Replies
9
Views
3K
DC generator question -- what is happening at no load?
  • · Replies 4 ·
Replies
4
Views
4K
I ask for your help understanding the limits of my wires
  • · Replies 7 ·
Replies
7
Views
3K
How does the phase noise of the LO effect IF accuracy?
  • · Replies 4 ·
Replies
4
Views
3K
Frequency of Modulated Signal: Carrier vs Message
  • · Replies 3 ·
Replies
3
Views
3K
RF cavities and related devices
  • · Replies 73 ·
3
Replies
73
Views
9K
Are multimeters accurate when measuring different voltage and resistance ranges?
  • · Replies 21 ·
Replies
21
Views
4K
Harmonics in the "electrical" domain
  • · Replies 10 ·
Replies
10
Views
3K
Model electron movement in an electric field (Magic Eye tube)
  • · Replies 2 ·
Replies
2
Views
4K
Issue in satellite communications as they pass overhead
  • · Replies 2 ·
Replies
2
Views
3K
Is this a good GM tube voltage regulator and rectifier?
  • · Replies 18 ·
Replies
18
Views
4K
The age-old shut down vs hibernate debate
  • · Replies 39 ·
2
Replies
39
Views
6K
Defining a BH loop in Ansys Maxwell?
  • · Replies 2 ·
Replies
2
Views
6K
Mathematical model of an induction motor
  • · Replies 2 ·
Replies
2
Views
2K
What causes SWR to change along a feed line?
  • · Replies 17 ·
Replies
17
Views
5K
Help Understanding Circuit Requirements for Conducting Diode
  • · Replies 3 ·
Replies
3
Views
3K
Best multiple/many individual MOSFET driver IC?
  • · Replies 33 ·
2
Replies
33
Views
6K