Process for the production of ferromagnetic masses
DE908884C
Formation process and arrangement for selenium rectifiers
DE891571C
Process for establishing the electrical connection of tantalum electrodes covered with an oxide skin in electrolytic capacitors
DE892945C
Process for the production of selenium photo elements
DE899643C
Crystal growing facility
DE891115C
Process for the manufacture of selenium rectifiers
DE916443C
Manufacture of tinsel
DE880611C
Circuit for powering circuits from the parallel connection of rectifiers with electric batteries
DE885754C
Rectifier plate with insulating layer to absorb the contact pressure
DE874048C
Selenium rectifier with high blocking capability
DE887379C
Arrangement for controlling a relay through a light-sensitive cell
GB676288A
Process for the production of electrolytic capacitors
DE869665C
Selenium rectifier
DE863521C
Piezoelectric element
DE841173C
Electrical capacitor, in particular wound capacitor, and method for its manufacture
DE865488C
Process for producing capacitor foils, in particular for wound capacitors, with an edge made of conductive plastic
DE918348C
Circuit arrangement for generating voltage curves, which are used in particular for flicker-free operation of incandescent lamps from low-frequency networks
DE847466C
Selenium rectifier with intermediate lacquer layers
