WORKING TYPOOLOGY
“Zero crossing” with variable cycle time
Examples of the operation of the GT for different values of the input drive signal and the consequent different cycle times
(100msec and 40msec respectively).
V
V
Example of input at 20% = 2V (IN 0-10V) or 4mA (IN 0-20mA)
V=Voltage across load
Example of input at 50% = 5V (IN 0-10V) or 10mA (IN 0-20mA)
V=Voltage across load
Logic output control for GT
GT thermal protection
t
t
t
ON
OFF
Red LED
ON
Red LED
Thermal alarm
V = Load voltage
Control
input
Thermal protection
activation
