I am working on getting an MSHA approval for a device and I would like to estimate what the surface temperature of a resistor will be over time.
Is there a way to calculate the surface temperatur...
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If I have a string of 19 continuous bits 'high' followed by a bit 'low', how do I calculate the DC Offset if the pattern is repeated? Is it just [(19 - 1)*(the amplitude)]/(20)?
Thanks for the help...
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I am tasked to use the DCM in Xilinx's architecture wizard. Can anyone explain what is the function of a DCM and how does it actually work? What are the inputs and outputs of a typical DCM? many thank...
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Hello. I'm studying signals and systems on my own this summer and I'm trying to get a good grasp of the convolution. I think I understand it mathematically enough to do some problems, but I don't ha...
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Hey, I'm trying to grasp a more physical meaning of what exactly is meant by a leading/lagging voltage/current.
In terms of capacitors and inductors, I understand mathematically that the differenti...
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Hi all, could u just recommend some good textbooks about electronics? I'm a little familiar with it as I worked on some circuit in high school. Someone said "the art of electronics" and &quo...
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i know you've heard this in a movie or something, usually when a ship is sinking or the last survivor of the human race is looking for other survivors. considering a transmitter is just a driven LRC c...
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I'm in need of an equation that relates the loss of heat (in power) of a cable to ambient air to various parameters such as diameter, temperatures of air and cable, and all other variable that may pla...
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I have used a single phase motor (220 V 50 hz) in a hoist application. It is used to lift a given load up & down, but being a single phase motor, it sometimes never lifts the load & starts to ...
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We are using 120V commercial grade electronic ballasts, properly grounded, rated at 2Amps to drive two low pressure UV lamps submerged in water rated at 800mA. System requirements are to use GFI bark...
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I am a HUGE newbie when it comes to Simulink.
I am trying to use it to help with test procedures for a project I am working on at work. I am trying to use the Signal Builder to generate an input o...
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I have a few questions about electromagnetism that no matter how many texts i read i can't seem to figure out, so i'll cut to the chase.
1) why is current in the opposite direction of the flow of e...
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surprisingly low voltage circuits still function fully submersed in water if
they are protected with some coating.
They only fail when this coating breaks down.
Now if this submersion in water is n...
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Hi there, Im new to here, and I bring some questions here too, hope can be solved here~
(1)if one loop that essentially has a current by power supply, meanwhile it is experienced a induced current to...
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On wikipedia they give a fairly simply explanation of inductance
Quote:...
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I read a couple of tutorials on electromagnetism and solenoids but theres a good few questions left unanswered.
1.) What determines the poles of a solenoid electromagnet? Lets say I have direct cur...
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Hello All,
I'm designing a driver board to control some MOSFETs. I have some mic4427 MOSFET drivers to drive the gates into avalanche mode but the function generators I am using to trigger the chip...
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hi
can you please tell me what is reverse electromagnetic force?
thankz!...
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I'm trying to create a simple power supply for a project, but it's not working correctly. I have a reference voltage (4.1V) and a supply voltage (4.8-5.0V). My goal is to connect an opamp functionin...
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Trying to create a sine wave. Any oscillator or chips that do it? Looking at 100kHz. Seems like most of the oscillators i find put out 0~3.3/5V square wave.
But i am m looking for -2.5~2.5V 100kHz si...
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Hi friends
I need some very accurate and practical comparisons of
Dipole constituted phased arrays
OVER
Loop antenna ,Folded Dipole Antenna constituted phased arrays.
we normally u...
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hi can someone help me with this??
briefly explain the characteristics of a pt100 platinum wire temperature sensing device....
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Hi,
Can someone please explain to me how you can get higher RMS voltage ratings across components than the supply voltage and how VAR ratings can become huge?
Indeed what really is reactive powe...
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I was reading there that if you wind a piece of metal wire into a coil it creates a magnetic field. Does this wire have to have current running through it? I know that a changing electric current crea...
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Hi all,
I want to detect a 50 uV (microvolts) signal from a sensor. I was wondering what's the minimal detectable signal from the circuitry on the market/in the industry now? I know that if I have ...
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