Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B9/00—Order telegraph apparatus, i.e. means for transmitting one of a finite number of different orders at the discretion of the user, e.g. bridge to engine room orders in ships
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F30/00—Fixed transformers not covered by group H01F19/00
H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
H01F30/08—Fixed transformers not covered by group H01F19/00 characterised by the structure without magnetic core
Landscapes
Engineering & Computer Science
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Power Engineering
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Physics & Mathematics
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General Physics & Mathematics
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Circuit Arrangement For Electric Light Sources In General
(AREA)
Schaltungsanordnung, insbesondere fuer Sicherheitsanlagen, zur Ermittlung eines Ortes, z. B. einer Einbruchsstelle, oder zur Feststellung einer Stoerungsstelle
Anordnung zum gleichzeitigen Einstellen von Zeichen und Zahlen an mehreren Empfaengern unter Benutzung einer als Geber ausgebildeten Stromunterbrechereinrichtung