The Barber Institute of Fine Arts, the Lapworth Museum of Geology and the University of Birmingham Collections - Objects
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ID number:  BIRRC-P0906
Institution:  Research and Cultural Collections
Named collection:  Collection of Historic Physics Instruments
Artist / Maker:  Amperex
Title / Object name / Definition:  Cavity magnetron for microwave oven
Place made:  USA
Date made:  Pre 1990
Materials:  Metals and ceramics
Measurements:  13 x 9.5 x 12.5 cm
BIRRC-P0906b.jpg

Description:  Cavity magnetron designed to fit end of 20th century domestic microwave cooker. Frequency probably about 2.5 GHz (wavelength 1.2 cm) and power 600 W. Compact design with the magnetic field produced by strong ceramic magnets built close around the anode block. The high voltage supply and cathode heater are in the box at the bottom of the image. There are large fins for air-cooling by an external fan. The microwaves are delivered to the cooking chamber via the metal stub projecting through an insulator from the top of the magnetron.

Inscriptions / Translations:  Amperex. A North American Philips Co.
OM-75
9300 922 10XX0
Made in U.S.A.


2 Related Media Items



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