john,
Every data sheet for the triac optoisolator I have seen has implied a 
low AC voltage of about 24 to 30 volts.  It may be that your 10 volt 
circuit will not operate because of this.
bill


John Waters wrote:

>Hi All,
>
>I'm experimenting the MOC3023 Triac Output Optoisolator.
>
>In the first experiment, I connected a 4.7K resistor (as load) in series 
>
>  
>
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