| 摘要 |
A cooling arrangement for a thyristor (1) is in the form of a finned metallic heat sink and includes a chamber (11-14) which constitutes an isothermal region. By minimising the temperature drop across this region heat transfer to the more remote surface areas of the heat sink is greatly improved. The isothermal region takes the form of a heat pipe or thermosyphon, or a part thereof. Conveniently, the chamber is formed as an integral part of an extruded aluminium alloy, and contains a quantity of a volatile liquid, e.g. pentane. <IMAGE> |
