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In Reply to: RE: Finally ........... it's done. posted by vinnie2 on May 31, 2017 at 06:44:35
Put a 8 ohm resistor in place of the speaker.
Drive the amplifier with a tone generator.
Connect a scope across the resistor.
Measure the AC voltage across the 8 ohm resistor just below clipping.
Voltage divided by resistance equals current.
Current times voltage equals watts.
Now you know the output power just below clipping into a 8 ohm resistor.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Follow Ups:
How do I tell when it is "clipping"?
The wave form will "square off" at the top and at the bottom.
Increase the output of the tone generator until it clips then lower the output of the tone generator until you don't see any clipping.
Then measure the AC voltage across the 8 ohms resistor and do the math.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
So "clipping" is a most descriptive name for it then. Thanks! I will give it a try.
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