| 摘要 |
A pulse generator for measuring the rotational angle of a shaft has a driven member which is connected to the shaft and is thus movable by the latter and which includes an endless track carrying a plurality of encoded periodic wave signals. A sensor head continuously senses the signal intensity at successive locations along the track as the driven member is moved by the shaft. The sensor head generates an output voltage which characterizes the encoded signals and which is applied to a trigger circuit. The latter generates a signal pulse each time the voltage exceeds a predetermined threshold value.
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