Turbo inverter
The turbo inverter (abbreviation: TWR) is a form of the inverter that is no longer in use today . It consists of a closed housing filled with protective gas, in which there is a motor that drives a pump for driving a circulating mercury jet. The mercury beam is connected to the load circuit. During one revolution, it sweeps over at least one switching contact and thus generates a pulsating direct current . This pulsating direct current is fed to a transformer . On the secondary side of the transformer each time it is switched on and off, a positive or negative voltage pulse, i.e. an alternating voltage , is generated.
Developed by AEG in 1950 , turbo inverters were used, among other things, in railroad cars to supply power to fluorescent lamps from the on-board accumulator. They had a longer lifespan than choppers , another early form of the inverter with heavily wearing mechanical contacts. From the mid-1960s, they were replaced by electronic inverters.
See also
Individual evidence
- ↑ Klaus Schulz-Hanßen: The position of the electrical industry in the industrialization process , 1970, limited preview in the Google book search.
- ↑ Eisenbahntechnische Rundschau, Volume 12, 1963: Of 15,000 devices, only 0.5% had failed in 10 years.