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  1. crutschow

    So what's the difference between 12v at 1a and 1v at 12a?

    Yes, the TS is a little strange, or a troll.
  2. crutschow

    So what's the difference between 12v at 1a and 1v at 12a?

    It can in a superconducting coil. :rolleyes:
  3. crutschow

    Basic Volts vs watts question

    An "amp" is a measure of the amount of current in a conductor. For a resistive load amps equals volts divided by resistance (I = V / R). You shouldn't be messing with electricity if you have no concept of how it works, and don't see to understand what we are saying. :eek:
  4. crutschow

    Basic Volts vs watts question

    If it is 12V and can deliver 20A. There's no "care" about it. Volts and watts are two different electrical parameters. Watts is the power it uses, and volts is the "force" behind the current into the device. Power is the volts into the device times the amps it takes, thus 12V @ 20A is 12V x...
  5. crutschow

    Basic Volts vs watts question

    Stop thinking. You will only do that once, and then you will likely need to buy a new tire inflator after the smoke clears. Yes, both voltage and current are very important. It's not the wire that's the main concern, it's the device being powered. A 12V device requires 12V for operation. 120V...
  6. crutschow

    VOIP setup for paging system to a warehouse horn

    Well the TS said he had the system working over a year ago and we haven't heard from him since, so I think he's ok.
  7. crutschow

    Speaker output ohmage without information.

    Always enjoy our little trip down the rabbit hole in Wonderland. :rolleyes:
  8. crutschow

    Speaker output ohmage without information.

    That leads me to your Google Drive, which I can't access.
  9. crutschow

    Speaker output ohmage without information.

    Sorry. That's another of your statements that make no sense to me.
  10. crutschow

    Speaker output ohmage without information.

    Yes. But as I stated, the output impedance of a typical solid-state audio amp is very low (<1 ohm). For an audio amp, being rated for an 8 ohm load doesn't mean its output impedance is 8 ohms.
  11. crutschow

    Speaker output ohmage without information.

    As an added note, solid-state amps are designed to deliver the maximum power to the speakers that the amp power supply can deliver, so trying to maximize the power by matching output and load impedances would overload the supply.
  12. crutschow

    Speaker output ohmage without information.

    It may be for tube amps where the tube has a very high impedance compared to the speaker, but not for solid state amps. Solid-state amps have a low output impedance, well below the speaker impedance, to maximize efficiency not power output. The maximum power transfer "sweet spot" gives a 50%...
  13. crutschow

    Speaker output ohmage without information.

    Interesting, but I think that's just a coincidence. The speaker impedance is selected to get the maximum power from typical amplifier designs, along with the limitations of speaker voice-coil design. Tube amps typically had a tapped output transformer for 4, 8, and 16 ohm speakers...
  14. crutschow

    Speaker output ohmage without information.

    Now days 8Ω seems to be the sweet spot, but some are 4Ω to get more power from a fixed low supply voltage, such as a vehicle battery. Speakers for tube amps were sometimes 16Ω, but not common now since solid-state amps can more easily deliver more power to a lower resistance (and thus higher...
  15. crutschow

    Speaker output ohmage without information.

    I don't need education from someone who doesn't know how to use a period at the end of a sentence. :p
  16. crutschow

    Speaker output ohmage without information.

    And in my IMHO, your rambling dissertation about damping factor did nothing to change that the answer to the TS's question is still unequivocally "No". :rolleyes:
  17. crutschow

    Speaker output ohmage without information.

    The design output speaker impedance is determined by the maximum peak current and voltage the amp can simultaneously deliver without significant distortion. You would need to know that to determine its rated impedance. It can be determined by using a variable resistance power load resistor to...
  18. crutschow

    Speaker output ohmage without information.

    No. There's nothing you can measure on an amp's speaker output terminals to determine the speaker impedances it can drive. The output impedance of modern solid-state amps when powered is a fraction of an ohm. When unpowered it could be anything. Only the oldy tube amps had an output impedance...
  19. crutschow

    Basic LED blinker Circuit help

    Why would you think it should work with a shorted resistor? You don't replace, it, you just remove the short.
  20. crutschow

    Basic LED blinker Circuit help

    Looks like there's a wire going through the 100k resistor, shorting it..
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