| 摘要 |
<p>582,385. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd. Oct. 3, 1944, No. 18895. Convention date, Oct. 7, 1943. [Class 37] A process for manufacturing a rectifier element with a uniform thickness of semiconducting layer comprises covering a baseplate 3 formed with an upstanding rim 1 with a thermoplastic semi-conducting material 5 such as powdered selenium and pressing between heated platens 6 until the top platen engages with the rim 1. The heat and pressure changes the powder to a fluent mass to fill the baseplate and any excess material is forced out over the rim or through the central aperture 4 of the baseplate.</p> |
