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We offer Light Intensity Control System useful for control labs. The light intensity control system is designed to bring out the basic features of closed loop systems in the form of a laboratory experiment. The light panel comprises of a number of filament lamps which get power from amplifier. Average intensity of the panel is sensed by a light sensor and a suitable voltage level is produced. Error detector, reference input and error amplifier are of standard configurations found in any linear control system. In addition to the above, the light panel also contains a few uncontrolled lamps which may be used as disturbance source. Further a square wave signal is available for dynamic response studies.Highlights Feedback control of light intensityStudy of inherent non-linearties-sensor, lampsPI controlDynamic response displays >>Experiments Characterization of light panel and light sensor blocksStudy of a practical single loop feedback control system which includes: Disturbance studyError monitoring Performance improvement through P-I controlEvaluation of dynamic behavior >>Features and Specifications Built-in 3 digit DVMBuilt-in IC regulated power suppliesLiterature and patch cords includedSeven lamps 6V/300mA5Hz square wave and triangular wave for dynamic response study The experiment is complete in all respect.