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  1. Holt

    Sine Wave to TTL converter

    Hello everyone I 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...
  2. Holt

    1.2-15V 3A Adjustable regulated power supply

    http://www.electronics-lab.com/projects/power/010/index.html Has anyone build this? comments much appreciated Holt
  3. Holt

    Where to buy SIEMENS BD287 PNP

    My trusted old Braun BVC 370 Hammerhead flash have been playing tricks on me, it fires all its charge at once instead of adjusting the output. while measuring various components, i discovered that there were no connection between base and emitter/collector on a BD287 PNP transistor even with the...
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