The effectiveness of magnetron and the comparison of pure tungsten wire heating
Second, the high-voltage capacitor out of tolerance or leakage: Third, high-voltage rectifier diode forward resistance increases (usually about 100kΩ) or reverse resistance reduction (normal infinity).
Microwave oven heating is slow, there are usually three reasons: First, the magnetron aging led to the decline in microwave power:
Above will result in negative pressure applied to the magnetron filament (due to the magnetron anode ground, so the filament to ground for the negative high pressure, so that the filament emission electrons that the magnetron to reduce the microwave power
But in the actual measurement will have some difficulties. This is because the general maintenance of the mill is not a meter or bridge, for the milliohm resistance changes difficult to distinguish Moreover, even if the magnetron serious aging, the filament resistance is rarely more than 1Ω.
For the magnetron is the identification of aging, the traditional method is to measure the filament resistance, under normal circumstances should be less than 1Ω, and the smaller the better.
