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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0640833 (1991-01-14) |
우선권정보 | GB-0002718 (1990-02-07) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 9 인용 특허 : 0 |
The harmful effects which build up in the bloodstream and in body fluids owing to cyclotron resonance caused by mains-powered heating appliances such as electric blankets are reduced by powering the appliance through a single-phase full-wave rectifier which converts 60 Hz ac into heating power that
Electric single-phase alternating current surface heating apparatus comprising, in combination, two heating elements formed by lengths of wire conductor which are spaced from adjacent wire lengths so as to distribute their heating effect over a surface to be heated, and a single-phase full-wave brid
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