| 摘要 |
An electrically powered industrial furnace (26) uses a number of distributed, highly compact power supplies (20) physically located generally immediately adjacent to each of the furnace electrical terminals (28), so that cabling and bus-bars (24) can essentially be eliminated. In addition, each heating element (22) has its own dedicated and independently controllable power supply (20) which can automatically adjust for varying resistances in the single connected heating element (22) and/or short cabling (24), to achieve a precisely uniform temperature within the furnace (26). |
