| 摘要 |
<p>1,080,008. Electric selective signalling. SOCIETE ALSACIENNE DE CONSTRUCTIONS ATOMIQUES DE TELECOMMUNICATIONS ET D'ELECTRONIQUE " ALCATEL " Dec. 17, 1964 [Dec. 19, 1963], No. 51369/64. Heading G4H. The secondary windings 4 1 , 4 2 , 4 3 , 4 4 , of a transformer supply voltages e, 2e, 4e, 8e, respectively to contactors 5 1 , 5 2 , 5 3 , 5 4 , connected in series across a load 6, so that, by energizing suitable contactors via leads 7, any desired voltage may be applied to the load 6. A further winding 8 supplies a base voltage E. b The device may be used for voltage regulation, for controlling the heating of a furnace or, in combination with a set of diode matrices, for transcoding.</p> |
