Magnetron Specs

Electrical Specs

• The electrical specifications relevant to a magnetron's are its AC supply voltage, its current at this voltage, its maximum starting current, cold resistance and minimum heating time at normal voltage before anode voltage is applied. The S94600E Magnetron has a supply voltage of 12.5 and a current of 116 amps at this voltage. The current of the filament must not exceed 250 amps, and it has a cold resistance of 0.010 ohms. The filament must be heated for at least two minutes before anode voltage is applied. Other important electrical specifications for a magnetron are the center frequency of the magnetron's oscillation in the UHF or microwave frequency range -- 915 MHz in the case of the S94600E, the focusing method of the magnetron -- an electromagnet for the S94600E. The pushing and pulling factors of the S94600E are 1.4 MHz/a€ and 4.0 MHz respectively.

Mechanical Specs

• The important mechanical specifications for a magnetron are its operating position, maximum overall length, maximum diameter, terminal conditions and approximate weight. The S94600E has a vertical operating position, is 18.25 inches long, has a maximum diameter of 4.94 inches and weighs approximately 16 lbs.

Oscillator Specs

• As oscillation is the magnetron's primary function, oscillator specifications are vital. These include direct current anode voltage, anode current, anode dissipation and the anode's voltage standing wave ratio -- or VSWR. The S94600E's anode has a D.C voltage of 17.0 kV, a 4.5 Amp current, a dissipation of 15.0 kW and a VSWR of 1.5:1 at 50 kW of power output, and 2.0:1 at 40 kW. The VSWR measures the efficiency of delivering radio-frequency power along a transmission line into a load. It is calculated as the [maximum voltage of the signal along a line] / [minimum voltage]. In a perfect system, the voltage would not vary and the ratio would be 1:1.