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  1. Tha fios agaibh

    Run a submersible pump on battery ?

    Very good then. I'd make sure your "home made generator" doesn't over charge the battery, or it will not last very long. A battery tender or trickle charger is probably the way to go.
  2. Tha fios agaibh

    Run a submersible pump on battery ?

    Good post Dave. Vassock; If this is for an aquarium, you also need to think of maintaining the water temp.
  3. Tha fios agaibh

    Super Bowl

    That was after seeing our cheerleaders.
  4. Tha fios agaibh

    Super Bowl

  5. Tha fios agaibh

    Run a submersible pump on battery ?

    Sure, depending on how long you expect it to run. The battery you linked is 6 volt (you need 12v) and of a rather small capacity. The lugs are male spade terminals.
  6. Tha fios agaibh

    Super Bowl

    Manning himself was sloppy, but I'm glad the old boy pulled it off.
  7. Tha fios agaibh

    Super Bowl

    :rolleyes:It's like rugby, but only better. Yay, Broncos.
  8. Tha fios agaibh

    Happy to be here

    Probably better to stay away from political discussions and stick with electronic stuff.
  9. Tha fios agaibh

    Happy to be here

    I admire your drive and visions of the future. The world can use another great mind. Welcome to ep. John P.S. The world can use another philanthropist too!
  10. Tha fios agaibh

    2 transistor circuit input output question.

    No, "SSL connection error"
  11. Tha fios agaibh

    2 transistor circuit input output question.

    Can't get that link to work Hop.
  12. Tha fios agaibh

    Trying to figure out the problem on a drive thru sensor.

    There is already a speaker and mic above it, so that might be it. I expected to see a ground loop sensor buried in the driveway. There is likely another sensor control board for it somewhere. A picture of the receiver end would be helpful too.
  13. Tha fios agaibh

    2 transistor circuit input output question.

    Thank you, your clarity is appreciated.
  14. Tha fios agaibh

    2 transistor circuit input output question.

    I don't understand how you can say that they are "physically connected". You could say; Using thevenin or Norton's theory it is considered connected. Or, as far as the circuit is evaluated, they are essentially connected together. I don't mean to nit pick here, I just want to be clear. If...
  15. Tha fios agaibh

    2 transistor circuit input output question.

    Indeed, and what a great tool it is. This is way up there with ohms law. I appreciate everyone steering me around my mental road blocks. Ps; "Thence"... Thoust fanciful words. Lol
  16. Tha fios agaibh

    2 transistor circuit input output question.

    A false reading since there is current flowing through the resistors and your dc meter applies its own to it. Just knowing its a voltage divider, you can calculate that 8v is dropped across the 20k and 2v across the 5k. Totaling the 10v supply.
  17. Tha fios agaibh

    2 transistor circuit input output question.

    Set to zero output? I assume you mean the load removed? I realize it's insignificant but, What about the current drawn by the biasing resistors?
  18. Tha fios agaibh

    2 transistor circuit input output question.

    I think of a parallel as physically connected at both ends, not having a battery in series with it. In this example the 5k hooks to +, and the 20k hooks to - (neg). To me that's not the same node. I guess I'm thinking of the battery as a component.
  19. Tha fios agaibh

    2 transistor circuit input output question.

    I don't know the atomic level, but a voltage source can influence the resistance by either adding an internal resistance (e.g.battery) or conductance. That's why I said theoretically paralleled. After all it's thevenins "theory", right? "How come thevenin theory is true?" I'd say, because...
  20. Tha fios agaibh

    2 transistor circuit input output question.

    I don't disagree, but I'm have trouble calling this a true parallel because there is a physical connection (the voltage source) between them. Wither it's a battery or a power supply, this has an effect on the resistance one way or the other. Right? Totally agree on point 2. This was my sticking...
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