Application Note #0046 120V / 240V CENode Line Coupling Introduction: The Intellon CENode PL contains a CELinx PL transceiver Integrated Circuit (IC), a CEThinx Network Controller, and transmit/receive circuitry. The CENode PL can be generically connected to ordinary 120 VAC or 240 VAC power lines through an appropriate line coupler. Instructions: The recommended coupling circuit for the CENode PL to high voltage power lines includes a transformer and a 60 Hz blocking capacitor. The transformer provides a linear transfer function for the 100-400 KHz CEBus PL Spread Spectrum Carrier (SSC) signal. The capacitor limits the 60Hz current to avoid saturation of the transformer core. Figure 1 represents the minimum components required for CEBus power line coupling. Good design practices will also incorporate surge and over voltage protection. Figure 1 - Coupling Circuit for High Voltage Power Lines June 1996 doc: an0046.doc Application Note #0046 Application Note #0046 - 120V / 240V CENode Line Coupling Notes: Transformer: Phillips Core #204T250 / 3C81 #28 AWG Teflon insulated wire (insulation voltage rating as required) 12:12 Turns D1 & D2: 1N5346B, Zener Diodes or equivalent Line Voltage 120 VAC 240 VAC C1 0.47µF, 250 V 0.33 µF, 630 V R1 470K 470K 5100 West Silver Springs Blvd. Ocala, Florida 34482 Phone: (352) 237-7416 Fax: (352) 237-7616 Internet: http://www.intellon.com 2 Mov ERZC07DK241U ERZC07DK471U
