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???
02/07/08 12:06
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 		 #150403 - Manchester
Responding to: ???'s previous message
Yes. Chop up the MCUs 24volt supply line in front of the LDO regulator. Have a capacitor in front of the LDO so that it continues to supply current to the MCU during the times that the MCU momentatily cuts offs its supply lead.

The FET switch defaults to ON all the time until the MCU decides via bit-bang software to turn it on and off in narrow pulse sequence.

MFM is modified frequency modulation.....

I really meant for you to consider Manchester ending which is also known as bi-phase encoding. This modulation sends data in a way that there is always an average 50% duty cycle density in the signal path. See here...
Save This Code
      +---+   +---
      |   |   |
   ---+   +---+
      <- "0" ->

   ---+   +---+
      |   |   |
      +---+   +---
      <- "1" ->


Michael Karas


List of 9 messages in thread
TopicAuthorDate
Power and Data over 1 pair            01/01/70 00:00      
   box1 vs box2            01/01/70 00:00      
      box1 box2            01/01/70 00:00      
      anyway            01/01/70 00:00      
   Straight Forward            01/01/70 00:00      
      Thanks Michael            01/01/70 00:00      
         Manchester            01/01/70 00:00      
            Cheers            01/01/70 00:00      
               Filter Caps            01/01/70 00:00      

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