Okay guys..
I've just made a small test to see what happens. Crazy I am.
Nothing happened, when I took out the power transistors notihing started to
smoke. Then I probed around with my finger to see if any of the pre-amp
transistors or resistors turned hotter than normal. Zilch (this with the AVG
still driving the amplifiers).
As far as I can see the amplifier is a very classic one. The only fundamental
difference of your ordinairy everyday audio amp seems to be the feedback - It is
taken from a sensing resistor (in series wiuth the yoke) through which all the
Yoke current runs as well. This way the Yoke current determines the feedback
signal, and not the voltage at the output (ofcourse they're still related). See
it this way, being the Yoke and the 10W sensing resistor a voltage devider, the
current through the Yoke and resistor varies the voltage over the sensing
resistor in a linear way. Therefore feedback is now related to the magnetic
'strength' of the yoke, since this is linear with the Yoke current. This gives
you nice linear defection, regardless of the impedance behaviour of the Yoke.
Comments are very welcome, as always!
Cya !
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Received on Tue Sep 19 17:27:33 2000
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