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The main application of a sawtooth generator in consumer electronics has been in CRT displays.

To control the scanning of the electron beam, you need precise ramp input to the deflector coils, but you need to bring back the electron beam to the left side (top) of the display quickly to maximize brightness; hence, two sawtooth generators for the vertical and horizontal scanning.

Of course, this is less common than it once was, since the advent of LCD and plasma displays.

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