So I’ve created this schematic based on an 18 volt supply but cascaded a few stages to generate clipping in a guitar preamplifier. If I lower the supply voltage to 9 volts, it’s quieter, but also clips more due to having less voltage swing available. If I lower the gain in proportion to the supply voltage by decreasing the drain resistor by half, then the signal is actually too clean, overdriving much less than it does at 18 volts. However if I keep the gain the same with the same Rd/Rs ratio but drop the value of both resistors by half, then the same amount of clipping is generated as with the 18 volt supply.
my question is simply: why?
Thanks
my question is simply: why?
Thanks
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