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  1. (*steve*)

    Copper Clad Aluminum vs Oxygen Free Copper use, trade off, voltage drop in DC circuits.

    Measure the voltage at the generation end of the cable and the end simultaneously. This can be difficult if the generation of usage changed rapidly. What you want to do is measure the voltage drop across the cable, but unless you have VERY long multimeter leads this is very difficult.
  2. (*steve*)

    Copper Clad Aluminum vs Oxygen Free Copper use, trade off, voltage drop in DC circuits.

    I think the argument for aluminum cored wires is that the conductivity is higher for a given weight of material. Copper cladding possibly reduces corrosion, and gives benefit for AC via the skin effect. My answer above doesn't really consider corrosion in connectors.
  3. (*steve*)

    Copper Clad Aluminum vs Oxygen Free Copper use, trade off, voltage drop in DC circuits.

    For DC the whole story is resistance. You will lose more energy for a given current when the resistance is higher. For a given metal, resistance is inversely proportional to cross sectional area. If you're comparing different metals then you also need to take into account their differing...
  4. (*steve*)

    A simple one with LED strip

    That Wikipedia article is very misleading. It also reinforces the fact that you don't understand the difference between 5050 and 3528. All these are are the dimensions of the package the led is in. It has nothing to do with the intensity or efficiency of the LEDs themselves. The basic specs...
  5. (*steve*)

    CD4093 question

    No, because I don't want to hide your bad attitude.
  6. (*steve*)

    CD4093 question

    Ic4b's input is connected to the output of ic4d's output via a capacitor. Are we looking at the same circuit?
  7. (*steve*)

    CD4093 question

    It produces a negative going pulse at the end of the negative going pulse produced by the preceding gate. Schmitt trigger inverters can be used for all sorts of magic involving the creation of pulses at level changes, extending pulses, etc. They are wonderfully versatile.
  8. (*steve*)

    CD4093 question

    I tried to answer what seems to be your misunderstanding. The are 8 Schmitt triggers in that package. That particular circuit has several RC delays which will convert a rising edge into a negative going pulse. Note that of the 4 gates shown, three are being used as Schmitt trigger inverters...
  9. (*steve*)

    CD4093 question

    The 4093 is a quad 2 input nand gate. It contains 4 separate gates, each having 2 inputs. These inputs have Schmitt triggers to condition the signals applied to them
  10. (*steve*)

    Want Guidance for my Arduino Networking

    Polling, as in the master asks each node in order "do you have anything for me?"
  11. (*steve*)

    List of materials and tools for creating a BIOS chip reader / board with USB and DVI outputs?

    BIOS chips are typically EEPROMS. All you need is a reader for these chips (and pretty much any device capable of writing/programming them is going to be capable of reading them). What would the USB and DVI outputs need to do?
  12. (*steve*)

    Octal 3-State Non-Inverting Transparent Latch application in phone

    I'll answer you if you can tell me what an M4 x 15mm bolt could be used for in my car. Seriously, all I can tell you is that the octal tri-state transparent non-inverting latch is used to transparently latch up to 8 signals with the outputs potentially being driven to a high impedance state in...
  13. (*steve*)

    why is this comparator triggering on falling edge?

    When you take the input above the most positive supply rail, one of two things will happen. The worst is that (for this op-amp) that you exceed the base-emitter breakdown voltage of one of the input transistors. Another alternative is that some diode junction between the input and the positive...
  14. (*steve*)

    A simple one with LED strip

    This is the first one I looked at. Seems to have far more information than I have seen from a cheap seller on eBay. Bwahahahahahahaha Do you know what 5050 and 3528 mean?
  15. (*steve*)

    Can I re-use old components?

    If a part is critical, yes.
  16. (*steve*)

    A simple one with LED strip

    Bwahahahahahahahaha!!!!
  17. (*steve*)

    Can I re-use old components?

    It is unlikely that any of the resistors will have changed value significantly unless they are discoloured, however they're so cheap that it's probably not worth removing them for reuse. Electrolytic caps (certainly those of low value) are likely to be fine). Tantalum caps can go short...
  18. (*steve*)

    why is this comparator triggering on falling edge?

    They also don't say what happens if you exceed other ratings whick define the envelope in which the device is specified to operate. If they did, the device would be specified to operate in the larger envelope. In theory they could specify the volume of smoke generated during failure modes, and...
  19. (*steve*)

    why is this comparator triggering on falling edge?

    On the first page of the datasheet, look at the schematic. Q1 and Q4 have their collectors grounded (in this case to your most negative rail). The bases are your inputs. What happens if either input goes below the collector voltage? Consider the diode junction at CB. Section 6 on page 4...
  20. (*steve*)

    why is this comparator triggering on falling edge?

    I'm assuming this is some sort of homework, so I'm not giving you the answer. You have a scope connected to the non-inverting input. What does that indicate the range of input voltages is? How does it change when the diode is added or removed? In the datasheet, when they refer to 0V and 32V...
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