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Op-Amp Experiment

 

 

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The first iteration of the OAU Operational Amplifier (OpLab) has been completed. The Lab is based on the MIT iLab architecture. The lab uses a c# windows form interface to communicate with a standard iLAB service broker. The major hardware components of the lab are a National Instruments ELVIS device along with the DAQ card needed to use it, and a NI general purpose switching matrix. The lab utilizes the Dozen-impedance OpAmp circuit developed by Prof L. O. Kehinde. By placing switches from the switching matrix at strategic locations, the dozen impedance circuit makes it possible to construct up to 6 different OpAmp circuits using a single OpAmp. It will allow students carry out six experiments on Operational Amplifier circuits.

The switches were implemented using a multimode switch matrix developed around a PIC18F452 microcontroller and six MAX4664 FET switches. The switch matrix was connected to the RS232 port of the Server through a MAX232 driver.