Triggering Circuit by Synchronized UJT & IC 785:
IC TCA 785 a 16 pin IC shown in Figure is utilized in this research for firing the SCRs. This IC manufacturing that is having of 250 mA and a logic that is fuzzy kit with two input factors and attaining 5 linguistic sets is employed. This could generate 5 X 5 guidelines.
The manufacturing of fuzzy logic which differs from DC -10V to +10V is given to IC 785 controller pin11, which controls the comparator voltage VC ,and the angle that is firing for just one period and (180 +α) during negative period shown in figure.