TO PLOT V-I CHARACTERISTIC OF TRIAC

  1. Connect the circuit as per the connection diagram.
  2. Keep the gate current a fixed value (Ig1).
  3. By varying the anode to cathode voltage note the voltage (Vak) and current (Ia).
  4. Note the forward breakover voltage(VBO), latching current (IL) and holding current(IH).
  5. Change the gate current value (Ig2, Ig3) and repeat steps 3 and 4.
  6. Plot the graph between Vak and Ia , denoting IL, IH, VBO's.