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...
Is the STMicroelectronics L7912CV Voltage Regulator Suitable for a +12V Output?
  • · Replies 6 ·
Replies
6
Views
2K
Can Smart Technology Help Reduce Energy Waste in Homes?
  • · Replies 10 ·
Replies
10
Views
2K
Wanted: Instructions for Leybold PGA 100 mass spectrometer
  • · Replies 14 ·
Replies
14
Views
2K
Phosphor screen, hazards and demonstrations?
  • · Replies 5 ·
Replies
5
Views
3K
Two like capacitors in parallel
  • · Replies 13 ·
Replies
13
Views
3K
Mosfet conduction vs Drain voltage
  • · Replies 7 ·
Replies
7
Views
2K
Why is the Anode of an LED Connected to Positive?
  • · Replies 20 ·
Replies
20
Views
9K
Hi, can somebody help to measure varicap diode
  • · Replies 6 ·
Replies
6
Views
3K
Need to find an old variable capacitor
  • · Replies 46 ·
2
Replies
46
Views
8K
Are the terminals of a Battery neutral?
  • · Replies 27 ·
Replies
27
Views
6K
Is it possible to eliminate back EMF in a transformer and achieve free energy?
  • · Replies 12 ·
Replies
12
Views
2K
Why does conducting liquid moving in a loop produce DC
  • · Replies 1 ·
Replies
1
Views
1K
Lemon Battery Voltage: Why More Resistance?
  • · Replies 13 ·
Replies
13
Views
4K
Amplifying the voltage from a homemade battery.... In rural Africa
  • · Replies 27 ·
Replies
27
Views
4K
Can a 24V 30A Dimmer Switch Handle the Starting Current of a 500W 24V Motor?
  • · Replies 7 ·
Replies
7
Views
2K
Magnetic encoder signal processing
  • · Replies 2 ·
Replies
2
Views
2K
Potentiostat and powersource in electrochemical cell
  • · Replies 7 ·
Replies
7
Views
1K
Voltage Output in subtractor photocircuit
  • · Replies 1 ·
Replies
1
Views
2K
Modify Phone Battery: Is It Safe?
  • · Replies 6 ·
Replies
6
Views
2K
Damping effect in piezoelectric energy harvesting systems
  • · Replies 5 ·
Replies
5
Views
2K
Need tutorial for magneto static simulation of C-core (Imag)
  • · Replies 2 ·
Replies
2
Views
1K
Modified sine wave vs pure sine wave inverter
  • · Replies 5 ·
Replies
5
Views
2K
Voltage Doubler help: 6V ac 36W alternator in ~ 12V dc out
  • · Replies 10 ·
Replies
10
Views
4K
How does an opamp work as non-inverting amplifier
  • · Replies 11 ·
Replies
11
Views
3K
Why are the motor brushes not placed in the magnetic neutral axis?
  • · Replies 5 ·
Replies
5
Views
5K
What are the safety precautions for handling a shaded-pole motor?
  • · Replies 6 ·
Replies
6
Views
3K
Enqiry about an electrical motor's power
  • · Replies 9 ·
Replies
9
Views
3K
Understanding Battery Function: Principles and Development for New Innovations
  • · Replies 1 ·
Replies
1
Views
2K
Cell Phone Tower Communication: How Does it Work?
  • · Replies 1 ·
Replies
1
Views
3K
What happens when you insulate the rails of a DC electric train?
  • · Replies 1 ·
Replies
1
Views
2K
Current to Voltage and Voltage to Current Converters
  • · Replies 16 ·
Replies
16
Views
3K
Why is there confusion about capacitors and potential difference between plates?
  • · Replies 9 ·
Replies
9
Views
4K
Hi, can somebody explain this RLC circuit to me?
  • · Replies 7 ·
Replies
7
Views
2K
Synchronous Generator Short Circuit - Hazards
  • · Replies 7 ·
Replies
7
Views
2K
What is the optimal RPM for charging a battery with an automotive alternator?
  • · Replies 6 ·
Replies
6
Views
2K
Which is better -- amp ground connected to frame or battery?
  • · Replies 28 ·
Replies
28
Views
46K
Questions about Using My Multimeter
  • · Replies 19 ·
Replies
19
Views
3K
DC Blocking Capacitor: Solving a Photodiode Circuit Problem
  • · Replies 24 ·
Replies
24
Views
4K
Meaning of the FFT of a Poynting Vector integral, reflection coefficient
  • · Replies 8 ·
Replies
8
Views
2K
Measuring 800V AC signal with 16-bit DAQ card within 1% accuracy
  • · Replies 7 ·
Replies
7
Views
2K
Load resistance and current “draw”
  • · Replies 8 ·
Replies
8
Views
7K
Magnetic field put off by high current (causing cross-talk between wires)
  • · Replies 2 ·
Replies
2
Views
2K
Understanding AC Polarity and Ground Bonding in Electrical Circuits
  • · Replies 13 ·
Replies
13
Views
4K
Where Did I Go Wrong in My RF Amplifier Power Calculations?
  • · Replies 10 ·
Replies
10
Views
2K
What Does Ground Mean in Electrical Terms?
  • · Replies 38 ·
2
Replies
38
Views
6K
Off-Center Fed Dipole vs Standard Center Fed Dipole
  • · Replies 7 ·
Replies
7
Views
5K
How Batteries Work: An Electrochemical Explanation
  • · Replies 3 ·
Replies
3
Views
3K
Electromagnet Design for Separating Ferrous Material from an Ore Mixture
  • · Replies 2 ·
Replies
2
Views
2K
Simulink model of a hybrid vehicle (replace battery with fuel cell)
  • · Replies 19 ·
Replies
19
Views
4K
Intermodulation in an Amplifier and Third Order Incercept
  • · Replies 3 ·
Replies
3
Views
2K
Why do we need to supply air to the cathode of a hydrogen fuel cell
  • · Replies 4 ·
Replies
4
Views
2K
Is it possible to make a passive element that doesn't reemit EM
  • · Replies 8 ·
Replies
8
Views
2K
Will a subwavelength conductor patch reflect specularly?
  • · Replies 2 ·
Replies
2
Views
1K
Why the insulation rating of a wire depends on voltage?
  • · Replies 5 ·
Replies
5
Views
5K
Bizarre Behavior in Discrete PMOS
  • · Replies 7 ·
Replies
7
Views
2K
How to connect audio output to an ADC
  • · Replies 10 ·
Replies
10
Views
3K
IC Physical Design Software Inquiry
  • · Replies 11 ·
Replies
11
Views
2K
AC synchronous motor power factor
  • · Replies 4 ·
Replies
4
Views
4K
Line impedance versus shunt capacitance
  • · Replies 6 ·
Replies
6
Views
2K
Could someone me identify this component on a PCBA
  • · Replies 13 ·
Replies
13
Views
2K
Is it safe to use 48v on a 40v motor?
  • · Replies 17 ·
Replies
17
Views
3K
Why LED Lights Aren't Used in Camera Flashes/Strobes
  • · Replies 3 ·
Replies
3
Views
2K
Looking for a quad rail-to-rail op amp similar to TL074 in DIP14 package?
  • · Replies 17 ·
Replies
17
Views
3K
Possible Line Power Conditioner hobby project
  • · Replies 5 ·
Replies
5
Views
2K
Discussing Stagger tuning in VHF receivers....
  • · Replies 44 ·
2
Replies
44
Views
5K
I'm trying to understand what a proportional band is....
  • · Replies 1 ·
Replies
1
Views
3K
How can I design a circuit for my project?
  • · Replies 10 ·
Replies
10
Views
2K
Clock face notation of a Transformer's "Vector Group"
  • · Replies 8 ·
Replies
8
Views
6K
Sex education for SMA connectors
  • · Replies 23 ·
Replies
23
Views
4K
Why can't antennas be made smaller and smaller?
  • · Replies 8 ·
Replies
8
Views
2K
Why is the phase of an imaginary signal 90 degrees?
  • · Replies 7 ·
Replies
7
Views
6K
I have a couple questions about Arduinos
  • · Replies 1 ·
Replies
1
Views
1K
What Are the UV Radiation Risks of Using a Thyratron Tube?
  • · Replies 3 ·
Replies
3
Views
2K
How much current does a cell phone use?
  • · Replies 10 ·
Replies
10
Views
11K
Revolutionizing SMPS Efficiency with Innovative Pulsed Operation Technique
  • · Replies 19 ·
Replies
19
Views
2K
What Are Effective Methods to Control a Nichrome Coil Heater?
  • · Replies 16 ·
Replies
16
Views
5K
How to make a short range, remote-controlled electromagnet?
  • · Replies 3 ·
Replies
3
Views
5K
UV light + electric current = boom?
  • · Replies 72 ·
3
Replies
72
Views
8K
What causes a motor to burn out?
  • · Replies 8 ·
Replies
8
Views
3K
Can somebody tell me the calaculations of this 2 transistor circuit?
  • · Replies 6 ·
Replies
6
Views
2K
Try to determine the resistance of an NTC thermistor
  • · Replies 2 ·
Replies
2
Views
3K
Steady state boundary conditions between metal/dielectric?
  • · Replies 3 ·
Replies
3
Views
2K
Magnetic fields outside a shielded power cable
  • · Replies 4 ·
Replies
4
Views
4K
Reliability of LEDs: PF Members' Views and Experience
  • · Replies 99 ·
4
Replies
99
Views
9K
Impedance under lightning current
  • · Replies 7 ·
Replies
7
Views
3K
Antenna of this shape? What is the benefit?
  • · Replies 17 ·
Replies
17
Views
3K
Plasma Generation using Dielectric Barrier Discharge
  • · Replies 5 ·
Replies
5
Views
2K
What is the purpose of a rotary encoder?
  • · Replies 13 ·
Replies
13
Views
2K
Analog Computers: Digital vs. Theoretical Possibilities
  • · Replies 42 ·
2
Replies
42
Views
5K
Effect of high SWR on transmitter
  • · Replies 1 ·
Replies
1
Views
2K
How does this voltage multiplier work?
  • · Replies 4 ·
Replies
4
Views
2K
Residual magnetism in shunt generator reverse F1F2
  • · Replies 4 ·
Replies
4
Views
3K
What are the key principles of Marx generator physics?
  • · Replies 26 ·
Replies
26
Views
4K
Understanding current measurement on an irregular waveform
  • · Replies 3 ·
Replies
3
Views
2K
Transparent conductor on transparent plastic film?
  • · Replies 12 ·
Replies
12
Views
2K
Positioning of Resistors in Series
  • · Replies 7 ·
Replies
7
Views
2K
How to use transformers to create an electromagnet?
  • · Replies 1 ·
Replies
1
Views
2K
Can Two Cheap SDR Radios Accurately Measure RF Noise Correlation?
  • · Replies 26 ·
Replies
26
Views
3K
NPN transistor and how it operates....
  • · Replies 11 ·
Replies
11
Views
2K
Field Strength Calculation for an RF Emitter at Varying Distances
  • · Replies 2 ·
Replies
2
Views
1K