So got the new oscope.
Here's some of the waveforms. With TR814 and TR815 still disconnected.
This before connecting, an unloaded signal.
On wires 13, 17 and 16.
On wires 12, 14 and 15 (14 is marked as 11 in the schematic).
I don't really understand what the four primaries (or are they centre taps) are doing in the circuit but the top half is totally loading down my signal to nothing while the bottom half is not affecting it so much.
I should point out that this is with the secondaries all attached to their respective points. Is it worth disconnecting them?
This is the oscillation on Position 13. It's a lot slower than I expected. The amplitude is around what I thought it was from last weekend's experiments with that USB scope thing that worked poorly.
And position 14
It's stable like this and only wobbles a very small amount. Nothing is heating up.
Swapped in a new (probably old stock) MJE520 at TR813 (to replace the doofah BD435) and there's no change to oscillation speed or amplitude.
Here's some of the waveforms. With TR814 and TR815 still disconnected.
This before connecting, an unloaded signal.
On wires 13, 17 and 16.
On wires 12, 14 and 15 (14 is marked as 11 in the schematic).
I don't really understand what the four primaries (or are they centre taps) are doing in the circuit but the top half is totally loading down my signal to nothing while the bottom half is not affecting it so much.
I should point out that this is with the secondaries all attached to their respective points. Is it worth disconnecting them?
This is the oscillation on Position 13. It's a lot slower than I expected. The amplitude is around what I thought it was from last weekend's experiments with that USB scope thing that worked poorly.
And position 14
It's stable like this and only wobbles a very small amount. Nothing is heating up.
Swapped in a new (probably old stock) MJE520 at TR813 (to replace the doofah BD435) and there's no change to oscillation speed or amplitude.
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