11/08/2005 – Testing the oscillator.
This part of the project actually worked first-time ! The first oscilloscope picture shows the oscillator output at the bottom and the power amp outout at the top. Voltage level shows 100v/cm, this is at the lowest frequency and clearly shows the poor waveform associated with this simple circuit design. The top waveform is more square-wave like due mostly to some severe clipping. It would most likely sound absolutely horrible as a sound amp but all i need is to switch the main tube on and off quickly, so it should work.
This picture below shows the same outputs again, but this time at it’s maximum frequency of around 500kHz. Note the change in waveforms.
Altogether a satisfying project on its own, now to build the noisy part !