That's freakin Hilarius. AGThe power ratings of cheap audio amplifiers and speakers usually include multiplying the peak instantaneous number by the age of the marketing manager's grandmother?
It may be wrong, but for me the DMM shows the same voltage all the way from 20Hz to 20kHz with minimum rolloff at higher frequencies.The video is wrong because it uses a DMM to measure the 1kHz output from the amplifier.
Most DMMs are designed to accurately measure 50Hz or 60Hz from the mains but give a reading that is too low at higher frequencies.
Wake up Mate.It may be wrong, but for me the DMM shows the same voltage all the way from 20Hz to 20kHz with minimum rolloff at higher frequencies.
Fluke 87-V drops to ±2% accuracy at 20kHz (arbitrary wave), and ±5% at 200kHz (sinewave only), which is the maximum bandwidth.U cannot measure RMS Voltage from a DMM above 100 Hz or so.
At higher frequencies, a scope is the choice.
Even I don't trust my fluke over 400Hz.
Wake up Mate.
Depends on the brand of meter, basically. Some of the new ones have some pretty advanced features, but calibration is an issue (I guess lack of ability to calibrate is the issue).You don't believe me, fine. I take back everything i said about my method.
I suppose you could also just use a FW bridge made up with 1N4148's and a capacitor to measure the peak voltage and divide that with 1.414 to get the RMS, though there you get a 0.7V loss due to the forward voltage drop of the diodes, unless u go opamp and build a precision fullwave rectifier.
U don't have to take everything back. you lack experience me thinksYou don't believe me, fine. I take back everything i said about my method..
That will work for 30 to 100 Hz. Mostly with El-cheapo'sI suppose you could also just use a FW bridge made up with 1N4148's and a capacitor to measure the peak voltage and divide that with 1.414 to get the RMS, though there you get a 0.7V loss due to the forward voltage drop of the diodes, unless u go opamp and build a precision fullwave rectifier.
You don't really have a True Home Theater System until you need to run at least 2 separate circuits from the breaker panel to the room to supply the amplifier's power without blowing a breaker.My amp can give 10KW of Deleeeeesiuc Power.
I have 2.5kW on three circuits, but I cannot claim any overunity.Ha !! u did not know my KW amp is an over unity device....
Can you beat that ?
by Jake Hertz
by Jeff Child
by Jake Hertz
by Jake Hertz