Recent VFDs are using IGBTs or MOSFET output switches, not SCR. And they are rarely triggered by pulse transformers.
There are special ICs for Gate triggering of IGBTs and MOSFETs, like, IR2110, TC4420, TC4429 and so on.............
thanks
How can i get to know that the pulse transformer is working and its firing the pulses at the gate of the SCR ?
Disconnect pulse transformer from circuit, connect a led to output coil ,provide a dc pulse to input, see the led twinkle, if not, reverse led connections and recheck.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?