You might consider bootstrapping the video op amp you selected. Bootstrapping to give greater output voltage is described at:
EDN PDF
Linearity is maintained since the bootstraps are included in the feedback path.
Low idle current is maintained as well.
I haven't used this technique, so I can't speak for it personally. I looks workable for the application. Your output power requirement is very small if you are driving electrostatic CRT plates.
try LTSpice available for free from Linear Technology - Linear Home Page
it draws schematics and simulates the operation of the circuit.
the reason those video amps are dissipating so much heat is that they're operating in class A. a class A amplifier is always in conduction and so dissipates a lot of heat. sounds like you're trying to eliminate the quiescent current, which means using class B operation or class C operation. the problem you will experience is that class B and class C operation is very nonlinear. if the device in question is a color monitor, any nonlinearities will be very evident in the picture. what you are describing sounds like a kind of a push-pull class C amp, which is fine if your drive signal is digital, on or off, but if you're displaying analog video, it won't work. if you're displaying analog video, the quiescent current and the heat are neccesary evils.
a class AB design might reduce the quiescent current, but not eliminate it completely. the same is done with audio power amps. class A audio amps run at huge idle currents, like 1 to 5 amps. class AB power amps run idle currents run idle currents of 10 to 50 mA. that's a 99% decrease. if the amp chips (i'm guessing they're the phillips green plastic modules) are class AB already, my guess is that you aren't going to get much of a reduction in idle current. if they're running class A. you need to look at the spec sheet for the module. what's the part number of the module?
ok, Your amp diagram in #8 might work, but regardless of feedback through the op amp, the transition between conduction on the transistors will still cause crossover distortion. part of the problem there is the op amp tries to slew across the conduction potentials and at high frequencies the slew induced distortion and the crossover notch distortion will become very noticeable. high frequenct op amps also have a tendency to oscillate during the swing through the transition zone, because like clipping, it's a circuit condition where there is no useful feedback. in digital logic this would be called an "undefined" state, just it's an analog version of one.
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