> A triac will turn off or interrupt DC current, if the DC
> current is pulsed
> energy and decreases in amplitude to near zero volts. As an example, a
> triac will effectively control a half wave or full wave
> rectified DC signal.

Dear, formally a 'DC PULSE' is an AC signal plus a DC bias. And Vasili
explains CLEAR the physics of a triac. Tiacs CUT-OFF in absence of current,
not where DC voltage nears zero (remember inductive loads).

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