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Re: FM vs. PM
Frequency Modulation (FM):
The carrier frequency 'fc' is linearly deviated by the message (modulating) signal 'm(t)', and the linear constant 'fm' is known as the Frequency Modulation Index.
fs(t) = fc + fm*m(t) thus S(t) = A*cos[2*pi*(fc + fm*integral(m(t))dt)]
Phase...
You have a problem with low frequency oscillation on the output of a PWM Boost Converter? I'm sorry too, I should have paid closer attention to the question.
Have you checked the loop bandwidth to ensure that it is less than half the switching frequency? Otherwise it will try to respond to...
Switching Regulators (DC-DC converters) always have significant output ripple and usually employ an additional output filtering stage, but are usually much more power-conversion efficient than an equivalent Linear Regulator.
Digital circuitry has a higher level of voltage supply noise immunity...
touchstone spar format
I think it saves s-parameter data in the CITI format.
Apparently HP have a utility to convert it to Touchstone (.s2p) format.
I found a perl script which was designed to work with data from HP8753D at:
http://tools.rfdude.com/s2putils.zip
Cheers.
Re: why opamp is called voltage controlled voltage amplifier
There are two main categories of Operational Amplifiers:
1: a Generic op-amp is a "Voltage Controlled Voltage Source"
2: a Norton (transconductance) op-amp is a "Voltage Controlled Current Source"
All op-amps are "differential...
A -purely- negative impedance IS a negative resisistance!
Hamidzia wrote:
ALL electricity obeys Ohm's law!
Z = V/I, if Z is purely negative you have negative resistance!
If a voltage source is applied to a negative resistance load, then current will flow from the load to the source, instead...
Cherrytart wrote:
Yes, charge is the volume of water in the bucket (ie. using your analogy, charge is the water!), but voltage is the -pressure- of the water.
Extending your analogy, a conductor is a pipe, and resistance is an obstruction in the pipe.
Another analogy for the capacitor...
redistilling encrypted pdf file
There is indeed a pseudo-protection scheme used by Adobe for ps documents created from PDF with security enabled.
From the unofficial comp.text.pdf FAQ:
Have you tried printing from inside Ghostscript to the Adobe PDF printer? That has worked for me.
Bye.
kv-1404as
The KV-1404AS is a 34cm Sony Trinitron TV from the early nineties, with a basic OSD and no remote control.
The AS in the model number probably refers to the Australian model? So the basic model is the KV-1404.
It has a problem with "Tuner Drift":
* After changing channel need to...
Re: latest GCC under XP
I found this into using google.
Systemc/Cygwin
-------------------
Lars Munch have made at Cygwin installation which contain systemC. Cygwin is a Linux environment under Windows. The installation also contain XEmacs and WMaker. Lars Munch is a Research assistant in the...
Re: format
Are you reading these files from a CDROM in DOS?
The file TRANS.TBL in each directory on the CDROM, can be used on non-Rock Ridge capable systems to help establish the correct file names. There is also information present in the file that indicates the major and minor numbers for...
Re: latest GCC under XP
Have you actually visited the main cygwin site at:
www.cygwin.com
Download the cygwin SETUP.EXE program, place it in a directory where you wish to store the setup packages, and run it.
* Select to download and install from the internet.
* Choose a directory to install...
Re: problem - working in tc
I'm assuming you are talking about running TurboC. And I am assuming that you are trying to run it under Windows2000/XP which is much less compatible than the old Win95/98. Modern PCs are so powerful that they can easily emulate DOS and run small apps. I've had...
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