In message <[EMAIL PROTECTED]>, Neon John writes: >Now I'm curious how power is tapped off at each repeater point. I understand >the daisychain architecture but I'm wondering about the details, what >components can withstand the intial high voltage surge as the cable is >charging and how the voltage drop at each repeater is maintained relatively >constant, even if the repeater fails and quits consuming power.
It may be different these modern days, but it used to be that each repeater had a (power)resistor connected in series with the supply wires and the amplifier was connected across the resistor. If the amplifier disconnected, the resistor kept continuity, if the amplifier shorted, there would be continuity as well. In addition the resistor kept the electronics from getting too cold. >Also, is it true that an optical cable will keep working with a single >repeater failure, that the laser light will pass through unamplified? Seems >like I read that somewhere but I'm not sure. Yes, that's the major benefit from the "erbium doped fiber repeater" design. Google it for details. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
