IC资料-AN0046 芯片手册

June 1996 Application Note #0046
doc: an0046.doc
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

Application Note #0046 - 120V / 240V CENode Line Coupling
2
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 C1 R1 Mov
120 VAC 0.47µF, 250 V 470K ERZC07DK241U
240 VAC 0.33 µF, 630 V 470K ERZC07DK471U
5100 West Silver Springs Blvd.
Ocala, Florida 34482
Phone: [phone]
Fax: [phone]
Internet: http://www.intellon.com