We are attempting to dim a 60W incandescent light bulb using a square wave generator in labview at 120Hz frequency. We are using a cRIO analog output voltage of 5V (even though the SSR switches around 2) to a solid state relay (opto22 model 120d25). The problem is that the bulb doesn't dim as expected, it just turns on at around 50% of the duty cycle.
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