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What does impedance mean and how does it affect RG6 cables?
Impedance is similar to resistance, but with an extra property called reactance that only affects AC signals. A steady DC signal only "sees" the resistance of a circuit or a cable, while AC "sees" both the resistance and the reactance. The resistance plus the reactance equals the impedance. The reactance includes both capacitance (a tendency to store electrical energy) and inductance (a tencency to store magnetic energy). For cables like RG6, the DC resistance is very low, only an ohm or less per hundred feet, while the impedance is 75 ohms. The impedance value of the cable is determined by the outer diameter of the center conductor, the inner diameter of the outer conductor, and electrical properties of the material between the two (the dialectric). For practical purposes, the only thing that really matters is that the impedance of the cable needs to be the same as the impedance of any connectors or adapters and the signal source and destination (load) it is used with. When one of those elements has a different impedance, some of the signal tends to reflect back to the source instead of continuing to the destination. Coaxial cables are generally used when it is important to preserve as much signal as possible between the source and the destination, as in broadcasting, or to protect the signal from external interference. The outer conductor is generally grounded and blocks interference from reaching the inner conductor, which carries the signal.
What readings are normal when testing a 3 phase motor with a mega-ohm meter?
1.46 meg ohm
How do i Make a 8 ohm speaker 16 ohm?
You can't change the ohm load of a speaker. What you can do, is get a second 8 ohm speaker to run with that speakers in series and you will get a total ohm load of 16 ohms.To run them in series, simply wire the positive terminal of one speaker to the negative of the other speaker. One speaker will have an open positive terminal which you wire to the positive terminal on the amp, and same goes for the negative on the other speaker (to the amp's negative terminal of course).
A current of 200 micro A through a 6.8 k ohm resistor produces a voltage drop of?
1.36 volts Ohm's Law: Volts = Amps * Ohms
How much is 1 megohm?
1,000,000 ohm
What is the impedance formula?
Z = SQR (R² + XL²)Where:Z = Impedance (ohm)R = Resistance (ohm)XL= Inductance Reactance (ohm)
What is used to measure impedance?
an ohm meter concerning electrical impedance
How do you measure speaker impedance?
The real impedance is the resistance in ohms more 20%. A coil resistance of 6,7 ohms X 1.20 = an impedance of 8.04 ohms. If the voice-coil had exactly 8 ohms, the impedance would be 9.6 ohms and the sound would be unclear, tending to more basses.
If an amp runs 1000 w rms at 1ohm how do you wire a dual 4 ohm speaker to run at 1 ohm?
the impedance of a speaker is a characteristic that is has. A 4 ohm speaker will always have a 4 ohm impedance and it cannot be changed. If 2 speakers of 4 ohm impedance are wired in parallel, then the total impedance will be 2 ohms. Similarly, if you wire 4 speakers together, the total impedance will be 1 ohm. Wiring a 2 ohm speaker to an amplifier rated to drive a 1 ohm load should work without any problems but expect the total power output to be somewhat lower than with a 1 ohm load.
What do you measure with ohm?
Impedance, resistance, and reactance.
Will a 4 ohm sub work on a 8 ohm system?
With system you mean the output impedance of an amplifier. No Problem to do this, but there are really no amplifiers with an output impedance of 8 ohms on the market. All loudspeaker amplifiers have an impedance of less than 0.5 ohm. Scroll down to related links and look at "Impedance bridging - Wikipedia".
Can 8 ohm subs be used on 4 ohm amps?
No Problem to do this, but there are really no amplifiers with an output impedance of 4 ohms on the market. All loudspeaker amplifiers have an impedance of less than 0.5 ohm. Scroll down to related links and look at "Impedance bridging - Wikipedia".
Impedance is measured in what?
AnswerThe unit of measurement for impedance is the ohm.
How do you parallel 2 speaker 8 ohm on 8 ohm amply?
No Problem to do this, but there are really no amplifiers with an output impedance of 8 ohms on the market. All loudspeaker amplifiers have an impedance of less than 0.5 ohm. Scroll down to related links and look at "Impedance bridging - Wikipedia".
Can you use 10 ohm speakers with a 4-8 ohm receiver?
You can use your so called "4 to 8 Ohm's output" amplifier for your 10 ohms loudspeaker. All amplifiers have an output impedance of less than 0.5 ohms. You use impedance bridging when you connect the 10 ohm's loudspeaker. The "4 to 8 Ohm's output" means only that a 4 to 8 ohm loudspeaker will be adequate and not that the output impedance is 4 to 8 ohms! Scroll down to related links and look at "Impedance bridging - Wikipedia".
Can an 8 ohm amp drive 16 ohm speakers?
Never heard of a 16 ohm hifi aplifier. All amplifiers have an output impedance of less than 0.1 ohm. We use always impedance matching with a low source impedance to the much higher load impedance. Scroll down to related links and read "Amplifier, Loudspeaker, and Ohms".
Can i make 4 ohm output amp switch to 8 ohm..?
There is neither 4 ohm nor a 8 ohm output of an amplifier. Less than 0.5 ohm is the output impedance of a loudspeaker amplifier. Scroll down to related links and look at "Voltage Bridging or impedance bridging - Zout < Zin".
