| 摘要 |
<p>An electric temperature control apparatus having a protection circuit for a triac portion or relay portion is provided, which prevents danger of fire from resulting from short-circuit states due to spark or arc of the triac portion or relay portion caused by an excessive electric surge current input into a smoothing capacitor, strengthens durability of the electric temperature control apparatus, employs a negative ion generation method, to thus further enhance safety in human bodies of the negative ions, and completely interrupts electromagnetic waves when it is being applied to an electric mattress and cushion.</p> |
