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Mains Remote Alert - Remotely-operates a Beeper and/or a LED via mains supply line Simple Circuitry, easy to build unit

Passive Filter Cleans Up Power Line Communications:   - 09/20/01 - EDN-Design Ideas:  Many applications require the design of custom analog filters (Reference 1). The application for this design required simple and low-cost I/O filters for PLC (power-line communications), where low power consumption is a crucial factor

   
 
 
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