- Green LED remains ON while voltage remains under 5.6V.
Green LED remains ON , it will not extinguish
- Red LED turns ON when voltage reaches 5.6V, and Green LED turns OFF.
Red LED turns ON when voltage reaches 5.6V + at least 0.6 v , so more like
when voltage exceeds 6.3v Red LED turns ON and Green LED remains on.




- SCR shorts out Fuse and protects everything to the right of this circuit.
in practice :- just after every semiconductor device is destroyed SCR shorts out Fuse