# BalashiFan5

Member Since: December 14, 2012

Country: United States

• Reel Flaming Duck Lip Selfie 1 in Stock

• If you open the Datasheet, Rotate it, and zoom in on the ‘notes’ at the bottom of the page. The T/S Parameters are listed.

Revc = DC Resistance = 7.2Ω Fo = Fs = 71.347Hz Qms = 3.74 Qes = 0.719 Qts = 0.603 Vas = 2.084 Ltr Sd = 5.411 m² Md = 20.0g BL = 6.674 T·m no = 0.102 % SPL = 81.1 dB Cms = 501.249 µm/N Mms = 9.927 g Mmd = 9.698 mkg (mili-kilogram? in other words just gram) Krm = 1.845 Ω (mechanical ohm) Erm = 0.907 Kxm = 34.981 mH Exm = 0.652

Le is frequency dependent and given with the following equation: Le = Kxm · (ω ^ [Exm-1]) ; where ω = 2πf Le @ 1kHz (nominal value usually listed) ω = 2π · (1000) = 6283.1853 Le @ 1kHz = (34.981) · (6283.1853 ^ [0.652-1]) = 1.667 mH

Re is also frequency dependent and given with the following equation: Re = Revc + (Krm + ω ^ [Erm])

As an aside, to get the graph that is on the data sheet (Impedance graph), you just need to combine the effects of Re and Le. The reactance of Le is given X = Kxm · (ω ^ [Exm]) and the inductive reactance is 90 degrees out of phase with Re we will have to use some imaginary number j. Voice coil Impedance = Zvc = Re + j·X

Yeah more than you asked for, but its never a bad time to get a learn on.

• Knock, knock Who’s there? Owl Owl Who Yep

• Simone might be going to Paris, but I’m tellin' ya, we will find the bike in the basement of the Alamo.

• David Jones of EEVblog has just done a great introduction video on FPGAs

http://www.eevblog.com/2013/07/20/eevblog-496-what-is-an-fpga/

• If you think this is big, you should check out my solder wick.

• Proper Soldering Technique - It’s no joking matter

• Check out Ponoko. They 3D print or laser cut designs from their showroom or from ones you upload.

You could do a picture frame type cut out to then hang from your wall. Something similar to the Heat Info System video.

• Was looking into this display and found these videos:

arLCE Tutorials Getting Started arLCD Example Coding arLCD Demos Turning On/Off Lights Vortex of Doom *Heat Info System

Looks like an easy way to add a touch screen to my next project. Wish I would have known about this before I purchased one of the 4D Systems touchscreens.

• The Lillypad MP3 is Dino-mite!!!

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