DE279342C - - Google Patents
Info
- Publication number
- DE279342C DE279342C DENDAT279342D DE279342DA DE279342C DE 279342 C DE279342 C DE 279342C DE NDAT279342 D DENDAT279342 D DE NDAT279342D DE 279342D A DE279342D A DE 279342DA DE 279342 C DE279342 C DE 279342C
- Authority
- DE
- Germany
- Prior art keywords
- switch
- bell
- current
- electromagnetic
- battery
- Prior art date
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems, e.g. audible personal calling systems
- G08B3/10—Audible signalling systems, e.g. audible personal calling systems using electric transmission; using electromagnetic transmission
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Keying Circuit Devices (AREA)
- Relay Circuits (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE279342C true DE279342C (https=) |
Family
ID=535267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT279342D Active DE279342C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE279342C (https=) |
-
0
- DE DENDAT279342D patent/DE279342C/de active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE279342C (https=) | ||
| DE2528593B2 (de) | Signaluebertragungsvorrichtung | |
| DE4022612C2 (https=) | ||
| US2844684A (en) | Electrical- contactor | |
| US2056147A (en) | Relay | |
| DE363338C (de) | Elektrische Alarmanlage | |
| DE509628C (de) | Gleichstromrelais, das nicht auf Wechselstrom anspricht, mit zwei parallel geschalteten, aber entgegengesetzt gewickelten Spulen und einer vorgeschalteten Drosselspule | |
| DE253843C (https=) | ||
| DE165572C (https=) | ||
| DE198726C (https=) | ||
| DE214566C (https=) | ||
| DE287778C (https=) | ||
| DE19524755A1 (de) | Einrichtung zur Hubüberwachung von Schaltmagneten | |
| DE128184C (de) | Selbstthaetige stromschlufvorrichtung fuer bogenlichtstromkreise | |
| US1446770A (en) | Magnetic interlocking repeater | |
| DE297117C (https=) | ||
| AT39914B (de) | Schaltung für Fernsprechämter mit dauernd an die Leitung angeschlossenem Anrufrelais. | |
| DE590981C (de) | Schaltungsanordnung zur Erhoehung der Schaltgeschwindigkeit von Schrittschaltwerken | |
| DE1236074B (de) | Elektromagnetische Schutzrohrkontaktvorrichtung | |
| DE28861C (de) | Telephon | |
| DE261776C (https=) | ||
| DE204919C (https=) | ||
| DE120873C (https=) | ||
| DE112409C (https=) | ||
| AT20475B (de) | Schaltung für Wechselstromtelegraphen. |