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Full bridge with current and voltage switching?
Original poster: "Jolyon Vater Cox by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
Is it possible to have a full-bridge output stage where the switching
devices in one branch of the bridge are driven signals in phase with the
voltage, and in the other branch in phase with the current,
to obtain a dead-time effect between current reversal in the respective
transistors?
I am thinking of having a current transformer to switch the transistors in
the second branch, the transistors in the first branch being switched by
the squarewave from an astable.
Since current lags voltage n an inductor by up to 90 degrees apart won't
the transistors in the second (current-gated) branch start to switch over
up to a quarter-cycle after the transistors in the first branch have
switched over?
And, more relevant to the subject Tesla coils, would it be possible to
derive the voltage signal from a winding inductively coupled to the TC
primary (effectively in parallel with the primary)
and the current signal from a current transformer in series with the primary?
This way would it not be simple to design a self-oscillating driver?