Recent content by STINGERX

Homework Statement i need to couple a ray (point source 15 deg) into a fiber with a small core diameter, the fiber located 8cm from the source. the focal distance of the lens is 1.5cm i need to choose 2 possible locations Homework EquationsThe Attempt at a Solution first suggestion: i placed...

really need this information, please help thank you for any information.

is there someone who know something about this? or maybe used to do something on anechoic chamber with pyramidal RAM?

can you be a little bit more specific about W?

i found that in Anechoic chamber there are pyramidal structures over the walls, what are the geometries of the height and base of those pyramids? W and H on the picture:

and one more question, is it possible to get two resonance frequencys in one circuit such as this one?

ok i calculated this values by determin that the coil will be L=10mH and calculated the Capacitor value to resonance frequency of 100 hrz like this: http://img593.imageshack.us/img593/8049/photo030212173055hdr.jpg then i have only two values L=10mH c=253.302uF i placed them twice in...

as you can see from the screenshot, i built this circuit on the simulation program Orcad Pcspice and i try to find the values of the parts C,L,R in order to recive a resonance frequency in 100hrz, my requirements are to build the circuit like this and to make the voltage 100v ac i only know...

Homework Statement i need to find values of capacitors coils and resistors in order to create resonance mixed circuit on the frequency of 100 hrz (as shown in the following screenshot) Homework Equations ω0=1/√(L*C) ω0=2∏f0 The Attempt at a Solution