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管电压主要控制照片的对比度,因此在投照工作中,选择适当的管电压[KV]与照片的质量有很大关系。 KV的选择一般用下式表示: Ky数值=被照部位的厚度(厘米)×2+基数(10—30)。
Tube voltage mainly controls the contrast of the photo, so in the projection work, select the appropriate tube voltage [KV] has a lot to do with the quality of the photo. The choice of KV is generally expressed by the following formula: Ky = thickness of the illuminated part (cm) × 2 + base (10-30).