| 摘要 |
A new approach to picture-making light emitter of dot type color brown tube is introduced. In other words, the rotation method of mercury light in light emitter is like this. Alternatively rotation from -180≦̸ to 180≦̸ (clockwise direction to counter clockwise direction) makes the source line untwisted. That is realized by dc terminal polarity change of motor. This system is composed of a light housing, mecury light, neck, pulley, belt, radiator, two pins, changeable switch used for foreward or backward driving of motor.
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