| 摘要 |
A two-pole overcurrent protection device, intended for connection into a current-carrying conductor, comprises a normally conducting thyristor having members for firing the thyristor at low off-state voltage. The thyristor has a member for turning off the thyristor by short-circuiting one of its injecting junctions. Voltage-sensing members sense the on-state voltage drop across the thyristor and influence the short-circuiting member for turning off the thyristor when the on-state voltage drop reaches a pre-determined level. The overcurrent protection device may be constructed integrally with one single semiconductor plate. |
