Nyesel mbiyen ra sekolah Using a volt ohmmeter, measure the - TopicsExpress



          

Nyesel mbiyen ra sekolah Using a volt ohmmeter, measure the terminals on your speaker. You will find a discrepancy between the manufacturers specification and the reading on the meter. A speaker with a nominal rating of say 8 Ohms, may measure only 6 Ohms. Why is this? Taking a reading at the speaker terminals gives you the DC resistance of the speaker, not the impedance. Measure the speaker with an impedance bridge, which makes its measurements using an AC test signal, and the speaker will produce a range of readings that vary with the frequency of the test signal. OHMS LAW Volts (E) = Amps (I) x Ohms (R) Amps (I) = Volts (E) / Ohms (R) Ohms (R) = Volts (E) / Amps (I) R=Ohms, E=Volts, I=Amperes
Posted on: Fri, 10 Oct 2014 09:22:18 +0000

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