FET

UJT

DIAC

TRIAC

First quadrant

Third quadrant

Fourth quadrant

Second quadrant

Select sweep speed

Select input voltage range

Select input signal voltage

Select intensity of the beam

To avoid false triggering

To increase the life of TRIAC

To increase the motor torque

To maintain the motor speed constant

24 Volt

12 Volt

9.6 Volt

10.8 Volt