In the Triac and Diac triggering circuit shown above, the variable resistor, RI, varies from 1.5 ko to 35 ka and its series capacitor value is 700 nF.
The supply voltage's rms value is 500 V and has a frequency of 100 Hz. The Diac has a breakover voltage of 40 V. What are the minimum and maximum firing delays (angles)?
