What to do if a microwave oven sparks and cracks inside

Microwave oven

To understand the problem, what to do if the microwave sparks inside, you need to know its structure and how it works. The basis of a microwave oven is a device called a magnetron. Depending on the operating mode, voltage is supplied to it. Under the action of voltage on the magnetron, short energy pulses are emitted. A certain amount of waves pass through the waveguide and exit through a hole made inside the microwave oven. For the normal functioning of the microwave, the presence of products inside is required. It is the products that absorb the emitted microwaves, which can no longer be reflected back into the emitter. Because of the reflected waves, the microwave crackles and that very unpleasant sparking occurs.

A quick tip - if you are heating a small amount of food inside, then you must put a glass of water with it, which will take on excess radiation, this will extend the life cycle of your microwave oven.

The principle of operation and the device of the microwave

The main element of a microwave oven is a magnetron - a generator of electromagnetic high-frequency waves. When a high electrical voltage is applied to it (about 4000 volts), it begins to emit waves. In this case, the oscillation frequency is 2.4 gigahertz, that is, 2.4 billion times per second. Water molecules at this frequency enter into resonance and the water heats up. This is the basic principle of a microwave oven.

Sparks inside a microwave are an electrical discharge or arc between two electrical conductors. These conductors can be pieces of foil, metal spray on dishes, or any other metal object. Under the influence of an alternating electromagnetic field in eddy currents occur in the conductor.

In the case when two conductors with different induced electric potentials are from each other at a distance less from that at which the electric discharge can be held by a dielectric separating them (in this case, air), an electric discharge occurs between them ( electric arc).

As a result, sparks appear in the microwave chamber. Therefore, when operating the microwave oven, do not use dishes with any metal elements. In the event that foil is used for cooking, do not place individual pieces of it at a distance of less than two centimeters from each other or from the walls of the chamber.

How to extend the life of your microwave

In order for a microwave oven to serve you for many years, you need to periodically pay attention to it and adhere to generally accepted rules:

  • Wash and clean from dirt.
  • Do not turn on an empty microwave oven.
  • Do not put metal dishes or metal-coated plates inside the appliance .
  • Inspect the device for damage to the enamel.
  • To avoid splashing grease, cover the plates with food.
  • Do not place large dishes in the microwave oven which can damage the enamel.

Devices, like people, require attention and care. Use the microwave correctly: only for its intended purpose and in accordance with the instructions. Then the device will delight you with a long, trouble-free operation.

Possible causes of the problem

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