Jam frequency

¥25000-75000 JPY

Cerrado

Publicado

hace casi 7 años

¥25000-75000 JPY

Pagado a la entrega

Jammer frequency PZT ultrasound transducers (d = 35 mm) having a single quarter-wave matching layer, a center frequency of 0.53 MHz, and a −6 dB fractional bandwidth of 65% with two peaks (0.44 MHz, 0.66 MHz). LILFU waveforms used as stimuli were generated by repeating pulse trains of US tone bursts at a pulse repetition frequency until a desired number of tone bursts had been generated (Figure 1B). Ultrasound tone bursts were generated by trains of square waves (0.2 µsec) with variable amplitudes (Table S1) using an Agilent 33220A function generator. To produce final plate voltages delivered to transducers, square waves were further amplified (50 dB gain) using an ENI 240L RF amplifier. Square waves were delivered between 0.44–0.67 MHz depending on the acoustic frequency desired, while the number of square waves driving each US tone burst equaled the number of acoustic cycles desired for a given US tone burst. Each US tone burst (pulse) contained between 1 and 50,000 acoustic cycles depending on the LILFU waveform generated. US tone bursts (Figure 1B) were repeated at a pulse repetition frequency by triggering the above referenced function generator with a second Agilent 33220A function generator. Pulse repetition frequencies were either a constant frequency or a swept waveform. Our primary LILFU waveform (LILFU-1) had the following properties: f = 0.44 MHz, TBD = 22.7 µs, c/tb = 10, PRF = 5 sec sweep 0–100 Hz, and Nt

Electric Repair

Electrical Engineering

Electronics

ID del proyecto: 14340259

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Proyecto remoto

Activo hace 7 años

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6 freelancers están ofertando un promedio de ¥55.555 JPY por este trabajo

@noumanalishakir

Hello I am Electrical Engineer and interested in your project. Please tell me about your time limits. When you need the project to be completed? Regards Engineer Nouman Relevant Skills and Experience pm Proposed Milestones ¥55555 JPY - pm

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@luisfvg6

Matlab Relevant Skills and Experience Matlab Proposed Milestones ¥55555 JPY - Matlab

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@softwaresolus

Hello, I am Nancy McDonald we have 13 + years experience in this field. I can assure you 2 months support & service after completion of the project. • • We have in house PCB design & fabrication. • • As the provided information is not enough, the bid is just an approach to initiate communication. • • Some of our work expertise are below. • • A)Home Automation Products • 1)Microcontroller based home power inverter, uninterruptible power supply(UPS), home security system with gsm autodialler , home water management & pump controller • 2)wireless pump controller with ISM transmitter & receiver • 3)DSP based home inverter upto 5kva • 4)Infrared & Rf remote controllers • 5)Solar pwm charge controller • 6)MPPT Solar charge controller for home inverter & ups systems • 7)AUTOMATIC remote gate opener • 8)Wireless multi zone home security system-ISM band 433.92Mhz • • B)INDUSTRIAL PRODUCTS • 1)High power online ups systems with IGBTS • 2)48V/100AMPS Switched mode power supply with power factor correction • 3)Flyback smps • 4)Switched mode battery charger upto 1000w • B.2)INSTRUMENTATION PROJECTS • 1)LCD display for industrial ups systems • 2)AC voltage & current monitoring systemss • 3)Wireless Control Panel for medicine factory, remote voltage & current monitoring • 5)Wireless pressure monitor for detecting gas leak in car ac • 5)USB INTERFACE for AC DRIVEs • • C) HARDWARE PROJECTS • 1)FSK, ASK Transmitters, & receivers for 433.92 ISM BAND

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