Hey all,
This is the circuit I have been playing around with and it seems to work ok and I messed around with digikey's sheme it to draw it up. From the reading I have done on RC oscillator circuits , the phase shift needs to be 360 degrees for oscillation to be sustainable. With one capacitor having a theoretical max phase shift of 90 degrees, how does this work on this circuit? What waveform does this produce?
thanks
ps I hit the insert image but it doesn't seem to do anything, so I have attached schematic below
Your circuit
as drawn will not operate
as an RC oscillator.
The R & C are
not in a feedback loop between collector and base.
To obtain feedback via CR,one,or both needs to be connected to the collector side of L1,not to the +ve supply,which by
convention ( which is pretty much descriptive of all real circuits) is,for AC, at the same potential,as the -ve side of the supply,& hence,the emitter of Q1.
Just for curiosity's sake,disconnect C & check if the device still oscillates.