Analog Definition and 281 Threads

Hello, Lets say that you have an analog control voltage that can vary from 0 to 5V and you want to send it through some sort of isolation barrier to another board. How do you do it? In my case, I have a voltage sensor that will return this range of values and I want to be able to transfer...

If I have a simple microcontrol, say 8 pin PICAXE. Could I use it to read the voltage going through a circuit directly? And can I output varying voltages?

Hi, my lab is using these: http://www.elexp.com/tst_7050.htm we weren't given any intro on interpreting the results. we're measuring dc volts... its the black numbers below the shiny metal in the picture. anyway, theirs two sets of numbers for dc volts, so we don't know which to use...

I'm trying to build an analog synthesizer for an independent study course at my high school. The submission date for the science fair is Feb. 8th, I'm really finding myself in a time crunch. For starters, I thought this would a little easier, but everywhere I look I have to back track and...

(a) What is the angular speed of the second hand of a smoothly running analog watch? ____ (rad/s) i got 0.03 pi webassign says "Check the syntax of your response" i also tried 0.03, but it's wrong also.. how do i put my answer?

Digital Cable seems to be a newer thing, which would imply cable TV up to this point has been analog. How? How can a cable accurately carry an analog signal, probably based on voltage, if cable length greatly affects voltage? Wouldn't that cause all sorts of crazy problems such as things...

I am instructed to design an analog computer to solve the following equation using 2 summing amplifiers and a integrator. I have attached a image of what I've done. I am seeking confirmation of my circuit or hint as to how to proceed. Thanks in advance! eqn: x' + 9x = 3

Hi, I am trying to filter noise out of data gathered from an analog to digital converter. I've looked at averaging techniques but I fear that they cause too much data loss. Can anybody recommend other smoothing/filtering techniques that might result in less data loss and can be done...

Is there any kind of signal meter that can take an analog output of rotational velocity, angle etc. and show it in its full form. If there is meters like this could you recommend a few? Thanks

Sorry, this sounds like a silly but I grew up in the age of auto-ranging multimeters. Say you have a scale, 1 to 10 and you select your scale as 1 miliamp. I presume if the needle is at 7 then that means 7 miliamps and NOT (7/10) 0.7 miliamps?

I was wondering,how do I represent graphically an analog signal components in time and frequency using an equation for example like this: v(t)=3 + 1.414cos(w0t) - 1.414sin (w0t) + 2cos(2w0t + 5pi/2) Thanks in advance for the reply!

http://www.aip.org/pnu/2006/split/779-1.html Diagram: http://aip.org/png/2006/260.htm Paper: http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000096000021215504000001&idtype=cvips&gifs=yes

Hi all, I want to use an analog joystick to control a stepper motor and also power a relay which powers a second circuit. When the joystick is pressed side to side I want the stepper motor to turn at a rate dependant upon the position of the joystick. If the joystick is pressed forward or...

Hi, I'm trying to prove that for a particle in a potential V(r), the rate of change of the expectation value of the orbital angular momentum L is equal to the expectation value of the torque: \frac{d}{dt}<L> = <N> where N = r \times (-\bigtriangledown{V}) Basically, I'm having problems...

im planing on buying a new Video card.. one only two digital output while the other one has an analog output and a digital one. i got a convertor from digital to analog... but i suspect it'll lower the image quality? how bad do you think it'll be? (im having this problem because the one...

Does anyone happen to know where I can purchase dual pair audio wire for use with rca connectors. In the event that you are puzzled I'm speaking of the audio cable like the one you have to connect your dvd player to your television, but without the connectors. I can only seem to find single pair...

one of my (former) profs mentioned why the sound quality of an analog recording is better than the sound on a digital recording but i can't remember what he said. can anyone explain to me the difference, or tell me where i can find out for myself?

I designed an analog circuit that transforms a couple of different incoming signals into a digitally compatible signal. I was recently informed there will be a grounding issue at the front of the circuit. The incoming signals will be from a variety of sensors. The first part of my circuit is an...

can someone please explain how a digital to analog converter works if say your equipment includes a computer with a software like Labview, a Lab-NB board, a terminal block (USB) and an oscilloscope. what is each component doing and what is being transferred between them? thanks.

testable analog of Hawking effect---explain? the current issue of Cern Courier has a bit from John Swain about this http://www.arxiv.org/abs/quant-ph/0408145 Hawking radiation in an electro-magnetic wave-guide? Ralf Schützhold, William G. Unruh 4 pages, 1 figure Phys.Rev.Lett. 95 (2005)...

Could anyone help me with the Prelab questions here: http://www.physics.ubc.ca/~phys209/analogue_comp.pdf I'm not asking for you to answer them for me, but I'm having trouble even starting on them. Any help with how to start, how to approach these problems will be very much appreciated...

What is the basic difference between analog and digital devices? What is the technical explanation for it?

from analog to digital(PCM/QAM) I want to convert analog to digital. I am recording analog signals in my firm and i want to make a programm witch helps me to decode fax informations. if you know how to decode this analog signals witch is modulated with PCM/QAM, please help me.

I designed an optical A/D (on paper only) several years ago. I have no means to make one since small scale integration is required. Any ideas how to get someone interested? If it works correctly, there would be zero conversion time and only settling time for the detectors outputs.

I originally posted this in the Relativity forum but I thought it was cogent to this topic so I'm repeating it. Sorry for the redundancy: Is the Universe Analog or Digital? First, I'm new to this forum, so I'm sorry if I'm being redundant or naive. Anyway, a while ago, I'd seen the...

First, I'm new to this forum, so I'm sorry if I'm being redundant or naive. Anyway, a while ago, I'd seen the question posed, "Is the universe digital or analog in nature?" Seemed like such a complex question at first, but then I came up with the following answer, and it's not what some...

hey guys, can you find any links on the web that discusses how a analog radio tuner works... i'm talking about in the level of an electronics and communications engineer...an in-depth study and discussiion would be highly appreciated... is this related to an RL circuit?

First, let me introduce the situation: I'm an undergraduate physics major taking a course in Experimental Physics. In the lab I am investigating the motion of natural underdampened oscillators. The oscillators under investigation are nothing more than various pieces of metal suspended...

Several papers have appeared in the last few months suggesting a development in the quantum theory of general relativity which is analogous to the Stone-von Neumann theorem of 1931. The clearest and most representative of the bunch is probably the Okolow-Lewandowski paper dated February 2003...

simple question... do we see in digital or analog?

SETI's search for alien contact includes detecting intelligent analog transmissions and also those carrying sequences of prime numbers signifying life elsewhere in the Galaxy. What is the relative ease with which SETI can discern rational analog vs prime number transmissions? Is it a waste...