Magnetrons for Microwave Oven

Feature

Prior to the world, we realized the Magnetrons of a long-life life, a high efficiency and low noise.

Technical support to the Oven manufacture

We are offering synthetic technical support, such as design evaluation, performance improvement evaluation, etc. of a microwave oven, based on abundant experience and technology.

Products

2M231

2M240

2M303

Typical Operation

Note

Note1

The filament transformer design center must be the following voltage for normal line voltage.

2M231, 2M300 : 3.5 ± 0.1 V
2M229, 2M240, 2M253, 2M301, 2M302 : 3.3 ± 0.1 V
2M248, 2M303 : 3.15 ± 0.1 V

Note2

The load VSWR larger than 4 may be allowable unless it is locked in such a condition.
It is required to consult with Toshiba Hokuto for the best design of peak anode current and impedance even if the VSWR is either less or larger than 4.

Note3

See outline drawing for measuring point.
Maximum anode temperature for normal condition (with load in the cavity) should be 250oC.

Note4

Temperature of metal to ceramic seal.
Maximum allowable built-up curves of seal temperature is shown in the application note 3-3-1.

Note5

See outline drawing for measuring point.

Note6

This is measured within 15 seconds after applying anode voltage.
The standard ambient temperature of the magnetrons during this measurement is 25oC.
Peak anode voltage goes down with operating time from this value to a lower value due to the rather large temperature coefficient of ferrite magnet.