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Tridelta Magnetmuseum

44287 Dortmund-Aplerbeck, Germany (Nordrhein-Westfalen)

Address Ostkirchstrasse 177
Floor area only roughly guessed: 100 m² / 1 076 ft²   Area for radios (if not the same) 5 m² / 54 ft²
Museum typ Exhibition
Electricity / Magnetism
  • Model Railway
  • Wire- & tape recording
  • Electric motors/generators/pumps
  • Radios (Broadcast receivers)
  • Telephone / Telex
  • Measuring Instruments, Lab Equipment
  • Lamps and Light
  • Industry / Production Technology

Opening times

Dienstags 11 - 15 Uhr; Donnerstags 11 - 18 Uhr

Das Museum bleibt bis auf Weiteres geschlossen.

Status from 08/2020
Temporary closed

Tel.:+49-231-4501-271  Fax:+49-231-4501-272  


Our page for Tridelta Magnetmuseum in Dortmund-Aplerbeck, Germany, is administrated by member Heribert Jung. Please write to him about your experience with this museum, for corrections of our data or sending photos by using the Contact Form to the Museum Finder.

Location / Directions
N51.489010° E7.551850°N51°29.34060' E7°33.11100'N51°29'20.4360" E7°33'6.6600"

U-Bahn U47 bis Endstation Aplerbeck
Busline 420 Richtung Ramhofstrasse Haltestelle "Sterie"
Regionalbahn R53 bis Aplerbeck-Süd

Some example model pages for sets you can see there:

D: Hartmann & Braun AG; Elektrostatisches Voltmeter 100 bis 300V (1918)
D: Metrawatt, BBC Goerz Ohmmeter 10Ω - 500kΩ (1919)
D: Hartmann & Braun AG; Ampèremeter (1922)
D: Gemeinschaftserzeugn Freischwinger-Chassis G Fr 341 (1934?)
D: Funke, Max, Weida/Th Röhrenprüfgerät W16 (1938)
D: Graetz Radio, Berlin Deutscher Kleinempfänger 1938 DKE38 (1938-40)
D: Hartmann & Braun AG; Pontavi-Thomson (1938?)
D: Deutsche Grammophon Platten(spieler)-Schrank 38 (1938??)
D: Hartmann & Braun AG; Lichtmarkengalvanometer 1672 (1939)
D: Braun; Frankfurt Koffer Super BSK 239F (BKS239F) (1939-41)
D: Pyro-Werk, G.m.b.H., Mikro-Pyrometer (1940)
D: Philips Electro Voltmeter GM4132 (1940?)
D: Ruhstrat AG, Gebr. Spiegelgalvanometer HSG 1 (1940??)
D: Ruhstrat AG, Gebr. Spiegelgalvanometer HSG 2 (1940??)
D: Ruhstrat AG, Gebr. Spiegelgalvanometer 56 Ω (1940??)
D: Deutsche Bundespost Tischfernsprecher 48 W48 (1948)
D: ElektroPhysik Dr. Drehspul-Galvanometer SG 11 (1950??)
D: UNBEKANNTE FIRMA D / Skala für Spiegelgalvanometer (1950??)
D: Siemens; D S.& Spiegelgalvanometer L18 W5-4 (1950??)
D: Siemens; D S.& Spiegelgalvanometer L18 W5-5 (1950??)
D: Hartmann & Braun AG; Flußmesser HtF (1951)
D: Rohde & Schwarz, PTE RC-Generator SRM (BN4085) (1951-73)
D: Grundig Radio- Dynamisches Mikrofon GDM5 (1953-56)
D: Hartmann & Braun AG; Elavi 1 (1954)
D: Assmann, W., GmbH; Universa 50 (1958)
D: AEG Radios Allg. Impuls-Magnetisator (1960??)
D: Telefunken Magnetophon 96 (1961-65)
D: Meyer + Meyer OHG; Telefon-Anrufbeantworter (1970?)
D: Magnetfabrik Electronic Fluxmeter 101455 (1970??)
D: Magnetfabrik Magna-OHM Gaussmeter (1970??)
D: Magnetfabrik Magna-OHM Impulsmagnetisiergerät (1970??)
D: Magnetfabrik Magna-OHM Magnetvergleichsgerät (1970??)
D: Siemens; D S.& Magnetfeld-Meßgerät Z234-001 (1970??)
D: Magnetfabrik Magnetisierjoch (1970??)
D: HAMEG GmbH, Oscilloscope HM307-3 (1979?)
FIN: Nokia, Salo Mobiltelefon NSE-8 3210 (1999)
USA: Webster Co., The, 228-1 (1952?)
USA: General Electric Co. Gauss Meter Kit (1970??)

Some example tube pages for sets you can see there:

Ignitron AJ5551
Triode-Hexode ECH11 (1938)
Ignitron GL5550
Voltage Regulator, single GR150/A
Pulse magnetron M575_Magnetron
Solid-State-Diode SSi-N20100
Vacuum Pentode TKF3 (1936)
Reflex Klystron VA-244B
Triode-Beam Power Tube VCL11 (1938)
Magnetron 2M204-M1


From Wikipedia, the free encyclopedia:
The Magnet Museum (German: Magnetmuseum) is a private museum in Dortmund-Aplerbeck, owned by the company Tridelta.

The exhibition provides an overview of historical and current applications of the permanent magnet in electrical engineering. The use of permanent magnets in counters, speakers, telephones, switches, relays, clocks, measuring devices, small motors and generators are illuminated in the museum.

One focus of the collection is the history of the magnet factory of Dortmund, which was established in the 1920s.


Room 1: History of the development of permanent magnet materials - from rolled steel to rare earths.

Room 2: Communications engineering, electrical measuring instruments, loudspeakers, motor technology - historical application examples of permanent magnets.

Room 3: Watches, medical technology, switching technology, magnetic mechanics, clutches and much more show the function of permanent magnets.

Room 4: Electrical induction, eddy current effect, loudspeaker vibration, magnetisation of magnets. presents here one of the many museum pages. We try to bring data for your direct information about all that is relevant. In the list (link above right) you find the complete listing of museums related to "Radio & Co." we have information of. Please help us to be complete and up to date by using the contact form above.