In "The common-emitter amplifier" article:
http://www.allaboutcircuits.com/vol_3/chpt_4/5.html
the phrase:
"output voltage is inversely proportional to the input signal strength. "
IS INCORRECT becase, by definition, A and B are inversely proportional when AxB=Const.
Actually Vout is (approximately, taking into account DC offsets) directly proportional to Vin with a negative multiplier, i.e.
Vout = Const x Vin, where Const is negative.
http://www.allaboutcircuits.com/vol_3/chpt_4/5.html
the phrase:
"output voltage is inversely proportional to the input signal strength. "
IS INCORRECT becase, by definition, A and B are inversely proportional when AxB=Const.
Actually Vout is (approximately, taking into account DC offsets) directly proportional to Vin with a negative multiplier, i.e.
Vout = Const x Vin, where Const is negative.