How+does+it+work?

Microwave ovens use various combination of electrical circuits and mechanical devices to produce and control an output of microwave energy for heating and cooking. Generally speaking the systems of a microwave oven can be divided into two fundamental sections, the  **//control section//**   and the   **//high-voltage section//**. __**// Control section //**__ It consists of a: - **Timer** (electronic or electromechanical) - A system to control or govern the **power output** - Various **interlock** and **protection devices**. The components in the high-voltage section serve to step up the house voltage to high voltage. The high voltage is then converted microwave energy. __**How it works?**__ Electricity from the **wall outlet** travels through the **power cord** and enters the microwave oven through a series of **fuse** and **safety protection circuits**.

These circuits include various fuses and thermal protectors that are designed to **deactivate** the oven in the event of an **electrical short or overheating**.

If all systems are normal, the electricity passes through to the interlock and timer circuits. When then oven door is closed, an electrical path is also established

through a series of **safety interlock switches**. Setting the oven timer and starting a cook operation extends this voltage path to the  **//control circuits//**. Generally, the control system includes either an **electromechanical relay** or an **electronic switch** called a __**triac.**__ Then the control circuit generates a signal that causes the relay or **triac** to activate, producing a voltage path to the **high-voltage transformer**. By adjusting the **on-off ratio** of this activation signal, the **control system** can govern the application of voltage to the high-voltage transformer, thereby controlling the **on-off ratio of the magnetron tube** and therefore the **output power** of the microwave oven. The powerful voltage would then be dynamically convert the high voltage in to undulating waves of electromagnetic cooking energy through __**magnetron tube.**__ The microwave energy is transmitted into a metal channel called a  **//waveguide//**  , which feeds the energy into the cooking area where it encounters the slowly revolving metal blades of the   **//stirrer blade//**. Some models use a type of  **//rotating antenna//**   while others rotate the food through the waves of energy on a **revolving carousel.**