第一个功能是提供一个接地路线给加热器继电器。
Its first function is to provide a route to earth for the heater relay.
并采用固态继电器SSR作为加热器的开关元件。
Adopted solid state relay (SSR) as the heater's switching component.
微波炉过电流保护电路涉及一种微波炉加热器的过电流保护电路，由多个加热器和继电器以及保险丝组成；
The present invention relates to an overcurrent protection circuit of microwave over heater. It is formed from several heaters, relays and safety fuse.
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