Recent content by qbone

  1. Q

    Manual Component Insertion Time

    Hey guys, I have been told that there exist some kind of standard time values used to calculate how long manual assembly of a PCB would take in general. Is should be a list with time values of how long it will take to manually insert components, solder etc. I have searched on google and all I...
  2. Q

    [SOLVED] Looking for Transistor 2SD2166R or Replacement

    Thanks Hero999, was hoping to find one thats wasnt SMD, but I'm just gonna settle with that :-)
  3. Q

    [SOLVED] Looking for Transistor 2SD2166R or Replacement

    I live in Denmark and the suppliers available are Mouser, Farnell, RS-Components
  4. Q

    [SOLVED] Looking for Transistor 2SD2166R or Replacement

    Hey Guys I just found my old Tyco Rebound RC car, and wanted to test it. It turns out that one side of the wheels can only go one way, and I have traced the problem to a transistor controlling the motor in the RC car. The Transistor is a 2SD2166R made by the company Rohm. I have found the...
  5. Q

    LDR offset + span adjustment

    What I'm trying to do is make the voltage rise and fall within some boundaries.. a MAX voltage and a MIN (offset) voltage. so that I can adjust the span where the voltage should rise and fall, and adjust the offset. an example; I want to be able to make the voltage rise between 500mV and 3V...
  6. Q

    LDR offset + span adjustment

    Anyone? I would think that I would need something like a current or voltage summer in order to create the offset, but I gotta make it without the use of opamps. For the span im not really sure. I would really appreciate it if someone could point me in a direction. Ignore the schematic in the OP...
  7. Q

    LDR offset + span adjustment

    Ok, thanks for, but that is only a quick sketch of the _old_ design. I need to build a new one where I can adjust offset and span, and for that I am asking if anyone have a few pointers as to what I should read up on. If possible it need to be designed without the use of opamps.  :-\
  8. Q

    LDR offset + span adjustment

    Hey guys. Im rather new to this forum, but have been looking around for a while for something that might help me. I got an assignment from my boss that I should design a new circuit. The circuit need to be controlled by an LDR and work so that when it gets dark the voltage increase and when it...
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