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  1. demedeirosa

    Source for crawler tracks

    I'm looking for a small crawler track system, the only company I have been able to find as of now is Inuktun, and they're prices are pretty steep. Is anyone aware of any other companies with similar products? http://www.inuktun.com/crawler-tracks/
  2. demedeirosa

    Electro-Magnet drop out time

    I'm trying to decrease the amount of time it takes for an electromagnet to actuate. Currently we're driving it with two MOSFET's, to drop out both sides of the magnet. The MOSFET's im using are 300V, N-CH, link below. I am familiar with the idea of letting the inductive spike peak to decrease...
  3. demedeirosa

    Transducer Power Levels

    I am new to the acoustics area, and I am trying to determine what I am missing as far as transducer power levels are concerned. I am currently in the process of characterizing how ultrasonic energy propagates through a building. To do so, I wish to develop a high power ultrasonic transmitter...
  4. demedeirosa

    Lock-In amplifier or other alternative?

    I'm trying to determine the best way to extract a signal from noise. The signal of interest will be an FSK signal somewhere between 20-40kHz with a bandwidth of 2-5kHz. The amplitude of the signal will vary greatly, ranging from 1Vpp (DC Biased) to very low level signals of less than 1mVpp...

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