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prateeksikka
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Posts posted by prateeksikka
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hi shekhar!
electric fields are nothing but a set of hypothetical lines along which a charge placed in that region will move.it is just a pattern.how a charge influences its surroundings and other charges.thats it! -
hi audioguru hi alun!
alun just said the spectrum is not never ending.what puts a limit to this spectrum is it the more affecting of noise at such high frequencies or distortion or something else? -
Flip flops or multivibrators are used as memory units and for generating clock waveforms.
It is only the capacitor arrangement wrt the resistor which makes it mono ,bi or astable .
But each has 2 states a 1 and a 0.
In one case the capacitors are charged and does not allow state to change(bistable) ;D -
Yes and length of antenna is inversely proportional to frequency of the input signal.Right?
If i feed an antenna with very high frequency say in GHz an ntenna of few mm may be enough but if the frequency is audio say 20Hz height is in kms.
Then why dont we use the never ending upper limit of the spectrum for communication purposes?
like in GHz.i guess FM range is only a few MHz.plz reply -
hi walid !
i guess the output results give the transconductance and resistance both input and output for the configuration.
I meant by asking the question that i use a pspice software which gives me simulation results just by one click.why do u write a long code for it? -
just as 2 people sitting together in a restaurant have more demand for food than a single person,similarly 2 resistors in parallel extract more current from supply and thus effective resistance is lowered.
Imagine what 100 people will eat!(case of a short circuit!!)
;D -
i thought that spice (atleast the one that comes with orcad) is a pick and place software.Do you really write code for it?
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does impedance depend on the frequency of the signal by which it is fed?
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hi audioguru!
i remember feeding oscillator outputs to antennas in many cases.
Are antennas inductive in nature or capacitive generally?
i mean if i measure the impedance of an antenna what will it be?
R+jX what will be X?
thanks in advance. -
Come on guys
i was serious and everybody played a joke on me....
HAHAHAHA -
hi walid !
it is a golden rule in electronics that NPN and PNP transistors can be interchangably used in any electronics circuit by slight modification.
But in general we go for NPN transistors including me and u know the reason behind this is too simple-------
"Electrons have higher mobility than holes!!!"
8) -
by using the word linear here,do you mean a linear operation like
i/o slope is constant?
like constant increase in o/p leads to constant increase in o/p? -
individually u can get the circuits for these
try searching on google for
1.aaroncake.net
2.beyondlogic
3.hobby circuits
may be electronics lab too. -
Have you made sure that Netlist and design rules check have been saved?atleast created!!!
I have worked on ORCAD LAYOUT as well as CAPTURE and never faced such a problem.... -
Then why do you think we call them as linear ICs. I mean any vendor would say 741 linear IC unlike any other IC.
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I wish to know how can i become the moderator of a section on this site?
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hi alun!
i guess digital - analog and linear -non linear are two different clasifications.
as far as i know opamps are always linear. -
diodes bidirectional characteristics are basically explioted to use it as a switching device.
It has applications in many domains right from controllers to inverters.
where do u wish to use the diode? -
I had a misconception that it is their manufacturing process which makes tham called so i.e linear ICs. It is because that they operate linearly.
thanx buddies! -
Conclusion from my side :
A high voltage source with a less series resistance or a high current source with high parallel resistance kills u.in otherwords it is V*I. -
Higher frequencies need higher bandwidth .Is it according to shannons theorem u are talking about?
bit rate bandwidth relation? -
Any other ICs which are called linear Ics along with op amps?
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ok.
now i understand.
But I have also studies that we are constantly moving towards hisher frequencies in communication.Anyway,what are the disadvantages of communication at say 10GHz than at say 100Hz? -
hi MP !
I think the 1000V source about which u are talking might be haveing a high internal resistance which dissipates most of the power when u touch the source.
It does happen .Some lineman do repair high voltage lines with bare hands but internal resistance must be high otherwise god is the savior!!! ;D
thyristors in series
in Theory articles
Posted
Are you connecting them in series for higher power rating?
if that is the case small differences in voltages across them hardly makes a difference.
Go ahead with ur application.There will definitely be some difference.