amc@whuts.UUCP (Andy Cohill) (08/15/85)
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I am building a 'smart' RS-232 interface for the BSR house
controller accessories. I am having trouble locating a coupling
transformer to take the 121 kHz signal and modulate it onto the 60
Hz AC line. Can anyone provide any pointers to the transformer or a
company that makes that sort of thing?
I am already familiar with Steve Ciarcia's articles on the subject
in Byte. I don't like the way he does things. Too easy to leak 120
volts into your computer.
thanks,
Andy Cohill
{allegra|ihnp4}houxm!whuxl!whuts!amc
201/467-7140
john@hp-pcd.UUCP (john) (08/19/85)
<<< < < I am already familiar with Steve Ciarcia's articles on the subject < in Byte. I don't like the way he does things. Too easy to leak 120 < volts into your computer. < Andy Cohill < Its a lot easier to use an optoisolator between the computer and the interface than to try and isolate the interface from the line. John Eaton !hplabs!hp-pcd!john