Re: Bush TR82 - general transistor bias question
It's because it's driving a transformer primary rather than an actual resistor. This means that the collector can swing dynamically as far above the 9V rail as it can swing down before it hits the emitter voltage level.
The transformer coupled output of a typical valve set behaves in the same way with the standing anode voltage sitting as near HT+ as the primary resistance voltage drop allows.
__________________
....__________
....|____||__|__\_____
.=.| _---\__|__|_---_|.
.........O..Chris....O
|