| 摘要 |
<p>An electrically isolated mains circuit arrangement comprises a 1:1 transformer having a primary winding connected across the incoming mains conductors and an ungrounded secondary winding (103) which is isolated from the primary winding and connected to one or more domestic mains sockets (105-1 .... ), (105-n). Since the secondary circuit is unearthed there is no danger of an electric shock and since the core (101) or alternatively, the casing of the transformer is earthed the circuit arrangement is also protected against lightning. <IMAGE></p> |
