Q:how do u calculate the SRF of a inductor,for example i have a 90Mhz oscillator,but i need a RF choke to block the RF from entering the other part of the circuit,so the SRF of the RF choke should be more than 90Mhz may be 110Mhz.,so how can i calculate the SRF,i make inductors by myself.so please help me out.

I was in The Corps right as Vietnam was ending and the rule against laying hands on recruits was not yet in place. It is nothing like it was but I've heard from some more recent marines that things still happen but nothing like it used to be. I saw a guy get spin kicked when standing at attention in the barracks by a DI who was some kind of a kung fu badass and saw a number of recruits get punched. I personally got punched in the gut pretty hard. I also saw a guy get led around by a string tied around his dick on the parade field with his pants around his ankles for screwing up a marching formation. FYI my platoon also had a guy jump from our 3rd story barracks down to the hard deckwe never heard if he lived or died, nothing was ever told to us and the DI's just went ahead with training like nothing had happened. Parris Island was not for the faint of heart back then.

Q:A 5.0 mH inductor and a 11.0 Ω resistor are connected in series with a 9 V dc battery as shown.

I'll assume an ideal inductor having no internal resistance. a) When the switch is closed at t0 the voltage across the resistor is zero. Hence, all voltage is across the inductor. V Ldi/dt 9V b) By Ohm's law nearly all voltage is across the resistor: V ir 9V after a long time. c) The resistor and inductor have the same current: i V/r 9 v / 11 ohms 9/11 A

Q:I live in Canada, markham, ontario. Is there any factory that builds industrial inductors of that many henries? I've been googling but have had no luck. Please refrain from asking why i want it. I just do.I'd appreciate the help. Thanks.

This is another silly question without knowing basic concept of basic parts. 1H inductor coil has size about 3' x 3' x 3' in iron core cost over $1000. Now you imagine how big would be a 1,000,000H coil and how much it could cost to make one.

Q:A current in a 100microH inductor is known to be i(L) 20te^-5t for t 0A) Find the voltage across the inductor for t0. (Assume the passive sign convention)B) Find the power (in microwatts) at the terminals of the inductor when t100ms.C) is the inductor absorbing or delivering power at 100ms?D) Find the energy (in microjoules) stored in the inductor at 100ms.

I don't have time to check the work, but here is the general idea. i(l) integral [v(t) dt], in this case, for t0 i 20te^-5t is given A) e(t) voltage across the inductor Ldi/et L20[ e^-5t(dt/dt) + t d(e^-5t)dt] L20[e^-5t + t(-5e^-6t)] (20 e^-5t)(1 - 5te^-t) B) Power e(.1) times i(.1) C) Absorbing, since e(.1) is still positive D) E (1/2) Li(.1)^2

Q:A 41.0-mH inductor, with internal resistance of 34.5 Ω, is connected to an ac source(t) (288 V) sin [(382 rad/s)t] (a) What is the impedance of the inductor in the circuit?answer in Ω 39.7 (got it wrong)(b) What are the peak and rms voltages across the inductor (including the internal resistance)?peak voltage: answer in V 292 (got it wrong)rms voltage: answer in V 206 (got it wrong) (c) What is the peak current in the circuit?answer in A 7.35 (got it wrong)(d) What is the average power dissipated in the circuit?answer in W 986 (got it wrong)i keep getting all this wrong what are the correct answer and what is it that i am doing wrongplease help me out with this question.plz.10pts best answer thank you! :)

Assuming that the voltage source is right, i.e., has 0 sequence impedance, and there are not the different elelements in the circuit, the present in the process the inductor would be V / Z? the place V is the voltage of the source, it particularly is likewise the voltage around the burden inductor, and Z? is the impedance of the inductor, with Z? Rs + j?L, the place Rs is the equivalent sequence resistance of the inductor, which in this occasion is negligible, ? is the angular frequency of the excitation, it particularly is 2? circumstances the utilising frequency f, and L is the inductance. The j is obviously the crucial root of -a million. Neglecting the resistive element, the value of the present will consequently be V / (2?fL) If fo is the unique frequency and Lo the unique inductance, the present after the alterations in frequency and inductance would be V / [2?(4fo)(Lo/8)] V / [2?foLo*(4/8)] 2 V / (2?foLo) so the present will boost via a element of two.

Q:Determine the constant value of the inductorI cant find constant value in my text books nor do I believe my lecturer has covered it. :(This is for electrical theory.

No such term! I think you are leaving out important details. The inductance of an inductor is constant. .

Q:Calculate the impedance of the circuit if the source frequency is 60 Hz and when it is 6.9*10^4 Hz

R30 x 10^3 ohms L80 x 10^6 henry f60hz omega2(pi)f120(pi) impedence by inductoromega*L impedence by resistorR total impedenceroot of(R(square) + Omega*L(square))

Q:a measured value of 100 ohm and the another has a measured value of 10 Ohm.Which inductor would you choose to use in a circuit where the narrowest possible bandwidth is required and why? A. Use 100 Ohm inductor because it has a higher Q. B. Use the 100 Ohm inductor because it has a lower Q. C . Use 10 Ohm inductor because it has a higher Q D.Use the 10 Ohm inductor because it has a lower Q.

C.

Q:Can you please help me about this question?

After a large time has passed, for a constant e(t), capacitor current 0 inductor current e(t)/R

Q:does it slow down the current or stops the current into the coil?

A most common application of an inductor (sometimes called choke) would be as part of a signal frequency filter