Holt Posted February 22, 2012 Report Share Posted February 22, 2012 Hello everyoneI am in the machine buisness, and have my own old lathe in my little hobby workshop, i scored a Heidenhain glass scale at work, i want to use for digital readout of position, i have a program on the PC, but it only handles 0-5V TTL signals, and the scale put out sine wave.I have been searching the net, but only found out i should use a Schmitt trigger to avoid noise.I am not able to develop schematics, but i can build it if someone have the schematics.Here is a scan of the sine wave from the Heidenhain mounting instructionsAnd here is what the output should look like[img width=680 height=510] Quote Link to comment Share on other sites More sharing options...
Hero999 Posted February 22, 2012 Report Share Posted February 22, 2012 Yes, a Schmitt trigger will certainly work. If you use a comparator IC such as the LM311 or LM393 you can fine tune the hysteresis band to get the best results. Quote Link to comment Share on other sites More sharing options...
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