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I use Triacs to select tuning capacitors in a series resonant circuit
operating between 7 and 15Khz.  Peak current is around 1 amp, voltage is
around 150V due to the Q of the network.  Triac is turned on and off by a
PIC I/O controlling the gate.

If interested I can look up and let you know the exact part I am using.



Scott 




>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
can a triac be used to switch a higher frequency signal ? By this I mean
asynchronous, on/off switching, probably with DC drive on the gate.
Basically is
there anything that prevents a triac from turning off properly when its
A1-A2
see maybe 50kHz and 50Vpp ? 
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>


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