Well arced up the Frequency Counter and the Spectrum Analyser and had a bit of a play. The Linearity of Oscillator is pretty good as you can see that over a 10V range it is very close to a straight line -- especially for a couple of transistors that weren't even matched! The lowest frequency response is pretty close to pink and the other two show the increasing frequency response. You can see the lower level amplitude fall as the energy gets spread over a larger frequency range. The picket fence effect is, I think, due to the output being a square wave -- it is well outside the hearing range of most people anyway...
Thursday, January 28, 2010
More Noise...
Well arced up the Frequency Counter and the Spectrum Analyser and had a bit of a play. The Linearity of Oscillator is pretty good as you can see that over a 10V range it is very close to a straight line -- especially for a couple of transistors that weren't even matched! The lowest frequency response is pretty close to pink and the other two show the increasing frequency response. You can see the lower level amplitude fall as the energy gets spread over a larger frequency range. The picket fence effect is, I think, due to the output being a square wave -- it is well outside the hearing range of most people anyway...
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment