Anyone know how to substitute could be made for a SIThy ? made by NGK
http://www.doc88.com/p-194579522720.html
by the looks of it , the main current is switched by mosfet , the Flyback transformer polarity flips , the diode becomes fwd bias and the SIThy gate gets its trigger to open . the SIThy is normally ON
from the article:
"the interesting point of this circuit is that with out any separate gate control circuit , the SIThy is turned off by forcing the device current to flow through its gate ,resulting in fast extraction of the carriers and the current cut off. Therefore , although the circuit control is carried out by using the FET , it is the SIThy that holds the induced voltage by L and plays the role of an opening switch."
...theres also a SIT = static Induction transistor , which I guess by the name is specific to Inductive Energy Storage
http://www.doc88.com/p-194579522720.html
by the looks of it , the main current is switched by mosfet , the Flyback transformer polarity flips , the diode becomes fwd bias and the SIThy gate gets its trigger to open . the SIThy is normally ON
from the article:
"the interesting point of this circuit is that with out any separate gate control circuit , the SIThy is turned off by forcing the device current to flow through its gate ,resulting in fast extraction of the carriers and the current cut off. Therefore , although the circuit control is carried out by using the FET , it is the SIThy that holds the induced voltage by L and plays the role of an opening switch."
...theres also a SIT = static Induction transistor , which I guess by the name is specific to Inductive Energy Storage
