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A CLAMPER IS AN ELECTRONIC CIRCUIT THAT CHANGES THE DC LEVEL OF A SIGNAL TO THE DESIRED LEVEL WITHOUT CHANGING THE SHAPE OF THE APPLIED SIGNAL. IN OTHER WORDS, THE CLAMPER CIRCUIT MOVES THE WHOLE SIGNAL UP OR DOWN TO SET EITHER THE POSITIVE PEAK OR NEGATIVE PEAK OF THE SIGNAL AT THE DESIRED LEVEL. IF THE CIRCUIT PUSHES THE SIGNAL UPWARDS THEN THE CIRCUIT IS SAID TO BE A POSITIVE CLAMPER. IF THE CIRCUIT PUSHES THE SIGNAL DOWNWARDS THEN THE CIRCUIT IS SAID TO BE A NEGATIVE CLAMPER. THE CONSTRUCTION OF THE CLAMPER CIRCUIT IS ALMOST SIMILAR TO THE CLIPPER CIRCUIT. THE ONLY DIFFERENCE IS THE CLAMPER CIRCUIT CONTAINS AN EXTRA ELEMENT CALLED CAPACITOR. A CAPACITOR IS USED TO PROVIDE A DC OFFSET (DC LEVEL) FROM THE STORED CHARGE.Read less