| 摘要 |
A control circuit ( 1 ) includes two input terminals ( 2, 3 ) for respectively electrically connecting with the active and neutral conductors ( 4, 5 ) of a mains power source ( 6 ). Two output terminals ( 7, 8 ) electrically connect with a load in the form of a two pin domestic electrical appliance ( 9 ). Conductors ( 4, 5 ) terminate at a domestic power outlet socket, and terminals ( 7, 8 ) are incorporated into a two pin plug for insertion into that socket. That is, terminals ( 7, 8 ) include elongate bundled conductors for extending between the outlet socket and the circuit. Appliance ( 9 ) has a conductive component, in this instance a housing ( 10 ) that, under normal operating conditions, is electrically insulated or otherwise electrically isolated from conductors ( 4, 5 ). The housing provides a reference point for circuit ( 1 ), and is electrically connected to that circuit by way of a conductor ( 11 ).
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