Current Monitor System (1606) AJ Pikul Barath Parthasarathy Jason Stock Maya Dubrow.

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Presentation transcript:

Current Monitor System (1606) AJ Pikul Barath Parthasarathy Jason Stock Maya Dubrow

Objectives Develop a current monitor Phonon’s requirements: 7-50V V Supply, Variable Waveform DC/PWM Signal Input High Side/High Common Mode Voltage Low impedance (< 10 ohms) Ranging Software/Calibration

Overview of Circuit ●Power Supply ●Voltage Protection ●Sense Amplification ●Output Circuit

Schematic

Power Supply Sections: Rectifier (Filter) Series Diodes Cap. Boost Converter

Power Supply: Rectifier (Filter) 28V, 30%, 10kHz PWM signal

Power Supply: Series Diodes Each diode has a typical voltage of Vz =5V

Power Supply: Boost Converter Max686

Sense and Amplification Sections: Solid State Relay INA169 Op-Amp (2.7-60V)

Sense and Amplification: Solid State Relay Four parallel resistors High Power, low resistance

Sense and Amplification: Operational Amplifier INA169

Output Circuit Sections: Output resistance Buffer Circuit

Output Circuit: Buffer Circuit Buffer circuit retains constant gain. OPA340

DAQ Data acquisition device (1408FS) (Resolution) Q=E/(2^M) DAQ tracks: Number of samples (range) Index sample

Software VBA.NET Calibration Routine Data Storing/Display

Benefits of Our Model 1 mA resolution on 10 A range Large common mode voltage Low output impedance Fast given supplied hardware Very nice software Wide range of power sources

Final Statements/ Future Plans H-Spice Simulation Choose Specific Values Further Test of Regulator/Amp Prototype Circuit Extensive Testing Extensions To Project: ❏ Adjustable anti-aliasing filter ❏ Autoranging ❏ MIMO Extension ❏ Automatic Calibration add software, add budget, add overall block diagram, formatting

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