AT89890B -
Three-legged choke coil respectively. Transformer with inductance variable by direct current or alternating current of low frequency.
- Google Patents
Three-legged choke coil respectively. Transformer with inductance variable by direct current or alternating current of low frequency.
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Publication number
AT89890B
AT89890BAT89890DAAT89890BAT 89890 BAT89890 BAT 89890BAT 89890D AAT89890D AAT 89890DAAT 89890 BAT89890 BAT 89890B
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Application filed by Allg Elek Zitaets GesfiledCriticalAllg Elek Zitaets Ges
Application grantedgrantedCritical
Publication of AT89890BpublicationCriticalpatent/AT89890B/en
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PATENT-ANSPRÜCHE:
1. Dreischenklige Drosselspule bzw. Transformator mit durch Gleichstrom oder Wechselstrom niedriger Frequenz veränderlicher Induktanz bei der im Kreise des Gleichstromes bzw. des Wechselstromes niedriger Frequenz ein grosser induktiver Widerstand eingeschaltet ist. dadurch gekennzeichnet, dass zum Zwecke der Vermeidung unerwünschter Spannungen in der Gleiehstromwicklung (g) bzw. zum Schutz der Gleiehstromapparate eine Kurzschlusswirkung (k) so angeordnet ist. dass sie etwa den gleichen Kraftfluss wie die Gleichstromwicklung umfasst.
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PATENT CLAIMS:
1. Three-legged choke coil or transformer with inductance which can be changed by direct current or alternating current of low frequency, in which a large inductive resistance is switched on in the circuit of direct current or alternating current of low frequency. characterized in that a short-circuit effect (k) is arranged in order to avoid undesired stresses in the DC winding (g) or to protect the DC devices. that it includes approximately the same power flow as the DC winding.
Claims (1)
2. Drosselspule bzw. Transformator mit veränderlicher Induktanz nach Anspruch l. dadurch gekennzeichnet, dass die Kurzsehlusswicklung mit der Gleichstromwicklung. z. B. durch Einschalten eines Ohmschen Widerstandes (R) parallel zur Wicklung vereinigt ist.
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2. choke coil or transformer with variable inductance according to claim l. characterized in that the short-circuit winding with the DC winding. z. B. is combined by switching on an ohmic resistor (R) parallel to the winding.
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AT89890D1914-09-171920-07-27
Three-legged choke coil respectively. Transformer with inductance variable by direct current or alternating current of low frequency.
AT89890B
(en)
Device for reducing iron losses in electrical alternating current devices, machines and transformers for low frequency by superimposing an alternating field in a magnetic circuit