What Does A Microwave Diode Look Like
During negative half cycle diode is out of picture.
What does a microwave diode look like. How to test a microwave high voltage diode with a multimeter. This diode is rated for thousands of volts which is what the magnetron circuitry produces. Hull in schenectady new york. A normal diode that is a non defective diode will read anywhere from 50 000 to 200 000 ohms.
Locate and remove your high voltage diode to test it for continuity. It is not many diodes in series as you suggest. Look for the marking a colored stripe on the diode or resistor that indicates which way the current flows. Differences in microwave make and model account for this large range in resistance readings.
Pretty much like a fuse. The parallel resistance cross capacitor is bleeder resistor. The negative side is the cathode side and the positive side is the anode side. Which looks like a circle on the end of the wire.
According to edison tech center the cavity magnetron is the central part of a microwave the concept of the magnetron was invented in the 30s by dr. Your microwave may turn on but not heat up. Unplug your microwave before beginning this inspection. Reverse the meter probes and measure resistance while touching the positive probe to the cathode and the negative probe to the anode.
How to diagnose microwave not cooking issues. We have manuals guides and of course parts for common ms19m8000as aa 0000 problems. The magnetron operates as an oscillator which is a device that generates oscillatory electric currents or voltages by nonmechanical means. During positive half cycle capacitor charges to the peak of the secondary voltage.
It looks like voltage doubler circuit formed by capacitor and diode. Diodes are rated for the wattage or amperage that they will be allow to pass or breakdown safely within the component. Testing the diode is done just like any lower voltage diode infinite resistance in one direction low resistance when you reverse the ohmmeter test leads less than 10 ohms. The positive side won t have a band and will have a bit that goes to the capacitor.
This could be caused by a problem with the high voltage diode which helps to power the magnetron.