I've built several simple circuits to get my feet wet and learn the ropes ... schematic reading, soldering, basic design, etc. I am now about to embark on building the NP Zen amp, but before I begin I want to have all the info I need.
Perhaps this is a ridiculously basic question, but how exactly do you go about adjusting for symmetrical clipping? I have access to an oscilloscope and function generator, but have been unable to locate any good references for basic measurement techniques (proper hookup, what to lookfor, etc.). If anyone could provide guidance or direct me to some good reference sources (online or print)
I would greatly appreciate it.
Perhaps this is a ridiculously basic question, but how exactly do you go about adjusting for symmetrical clipping? I have access to an oscilloscope and function generator, but have been unable to locate any good references for basic measurement techniques (proper hookup, what to lookfor, etc.). If anyone could provide guidance or direct me to some good reference sources (online or print)
I would greatly appreciate it.
Input a 1kHz triangle waveform, and adjust the amplifier for equal flattening on both peaks,
when clipping into a resistive load. Don't use a sine wave or square wave, a triangle wave
is much easier to use.
Generator to input socket, scope to the output terminals. Make sure the scope probe's
ground clip goes to the output ground terminal, not to the output hot terminal.
Adjust the generator's output level so the amplifier output just barely clips.
when clipping into a resistive load. Don't use a sine wave or square wave, a triangle wave
is much easier to use.
Generator to input socket, scope to the output terminals. Make sure the scope probe's
ground clip goes to the output ground terminal, not to the output hot terminal.
Adjust the generator's output level so the amplifier output just barely clips.
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It’s visual.
Put a test signal into the amp and turn it up until it clips (the tops & bottoms of the sine will look like somebody cut 'em off with a knife), as seen on an oscilloscope.
Then adjust until the clipping is the same on the positive and negative swings, i.e. symmetrical. Nothing to it, as long as you've got a 'scope and a freq. generator.
Put a test signal into the amp and turn it up until it clips (the tops & bottoms of the sine will look like somebody cut 'em off with a knife), as seen on an oscilloscope.
Then adjust until the clipping is the same on the positive and negative swings, i.e. symmetrical. Nothing to it, as long as you've got a 'scope and a freq. generator.
