Burst Firing Trigger Modules, BFTM - United Automation
Burst firing trigger module for driving both triacs & thyristors. Single & 3-phase versions available.
Zero voltage switching Opto-isolated outputs Voltage or manual potentiometer control LED indication of output Top hat or G profile DIN-rail mounting
The number of complete mains cycles during fixed repeating periods (typically 1 to 10 seconds) is varied, thus altering the duty cycle or on-/off-time ratio. Trigger pulses coincide with the zero-crossing times of the mains supply thus ensuring no RFI is produced when using resistive loads.