| 摘要 |
An adjustable thermal relay for use in electric blankets, electric hair driers or electric room temperature controllers is provided with an exciting coil provided close to the reverse side of the surface of a moving contact plate of magnetic material, to induce a continuous magnetic force for attracting said moving contact plate. By increasing the exciting current in the exciting coil, a gap between a moving contact and a fixed contact is widened and therefore, the operating temperature at which the contacts of the thermal relay are switched on or off changes. |
