| 摘要 |
<p num="1"><br/><br/> A noise-free low power consumption wide voltage range DC and AC<br/>contactor and remote telephone control system is disclosed. A movable iron<br/>core is connected to a linkage. The other end of the linkage is connected to a<br/>micro-switch. A normally closed contact of the micro-switch is connected in<br/>series to a magnetic coil and is connected in parallel to an IC and a <br/>retaining<br/>coil. A lower end of the movable iron coil is in the extent of the coil so <br/>that<br/>the magnetic coil attracts the movable iron core to move downwards to<br/>conduct the contactor and meanwhile, the magnetic coil will disconnect. The<br/>retaining coil is used to replace the magnetic coil to attract the movable <br/>iron<br/>core. Since the power consumption of the retaining coil is small and thus the<br/>contactor is noise free, lower power consumption, and wide voltage range.<br/> Three voltage stages are selectable. The connector can be used with a<br/>telephone, a telephone wire, a voice system, a keyboard and a software<br/>program so as to form a remote telephone control system with a simple<br/>structure, lower cost and be a multi-functional device thereby enabling it to <br/>be<br/>used widely.<br/>
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