The Alter® SM 445 is an air-cooled power supply for a 1.25 kW magnetron. The SM 445 is able to power and control most types of magnetrons available on the market with nominal power of 1.25 kW @ 2.45 GHz. Depending on the model, the output power can be adjusted continuously, from 10% to 100%, using an external analog signal from 1-10VDC, with a PC via USB port, or by front panel commands.
- Proven, state-of-the-art design with resonant topology that improves efficiency
- Single phase input requirement, at nominal 230 VAC, includes Power Factor Correction (PFC) stage
- Low output ripple, suitable for most applications, and stable filament control result in long magnetron life
- Very low harmonics and inrush current from efficient power stage design
- "Plug & Play" - when installed with Alter® cable set the user supplies only 2 signals See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
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![]() | SM-445Microwave Power Supply, Switch Mode, 1.25 kW, 2.45 GHz Magnetron |
Specifications
- TypeSM 445 Switch Mode Microwave Power Supply
- Power Output2000 W max
- Input Voltage230 VAC +10%/-15%
- Line Frequency50/60 Hz
- Efficiency92%
- Output Current475 mA max
- Alarm ManagementOpening alarm contact, emission of a 4 bit alarm code, the alarm is latched and requires a reset procedure
- DimensionsWidth, Rack 445 mm (17.52 inches)
Width, Front Panel 483 mm (19.02 inches)
Height, Rack 88.5 mm (2U, 3.48 inches)
Length, Rack 420 mm (16.54 inches) - Weight14kg (31 lbs)
- CoolingForced air, approx 100 m3/h
- Ambient Operating Temperature40° C (104° F) maximum
- ComplianceCE
- Preferred Microwave Magnetron HeadMKS, Alter TM012, TMA12, or TI012
Resources
Literature
Manuals
SM 445 Microwave Power Supply Manual(959.5 kB, PDF)



