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  • Users: masudasim
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  1. masudasim

    power transmission

    Hi We need to specify a cable for carrying power as well as data to approximately 10 Km distance. For data transmission over such long distances we have selected single mode fibre. For power transmission we have to select conductors of proper gauge, transmission type like AC or DC, no of...
  2. masudasim

    small size ADC card

    Hi I need a small size (approx 50 mm by 100 mm) low noise 16-channel ADC card sending data on gigabit ethernet for real time data acquistion. Minimum sampling (simultaneous) requirement per channel is approx 48 Ksamp/s/ch. I know i ask for lot of things in very small size but if any one know...
  3. masudasim

    humidity and water ingress sensors for underwater UUV

    We are designing a small underwater ROV. This ROV conatains a sealed compartment in which electronic modules will be placed. We need some humidity or water ingress sensors to detect any water leakage in sealed compartment. Can any one kindly suggest such sensors which are typical for use in...
  4. masudasim

    power amplifiers

    I need power amplifiers for acoustic transducers having input impedance of 150 ohm at resonant frequency. These power amplifiers should operate in audio freq range and must be capable of delivering 400-500 W output power to these transducers(i.e. to 150 ohm load) . Does any one have idea from...
  5. masudasim

    microphone array beamforming

    Hi I am working on conventional frequency domain beamforming for linear microphone receive array. I have simulated 32 channels array data with a poin target at 45 deg emiiting 20KHz tonal. I performed beamforming to make 32 beam time series data. To calculate array gain (or beamformer gain) I...

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