Amendment to the popular voltage amplifier posted by user: thebugger that used a common collector ( emitter follower ) as a voltage amplifier with a gain of over 1. As mentioned in the comments this circuit has amongst other flaws the undesirable quality of having a floating input. By utilising a transformer at the input it is possible to obtain a ground referenced input as is the normal practice. The other circuit flaws still remain. I would like to carry out some practical measurements on a circuit of this type, my suspicion is that this amplifier could potentially turn into an oscillator due to the absence of negative feedback.
