Can anyone tell me why in some circuits the transformer secondary
is not floating but tied to one of the primary terminals ?
It is not an autotransformer so what is the point of doing that?
Thank you for your answer.
This earth ground reason I may understand if the transformer's output is to be referred to ground or if in an audio amp stage grounding is needed but this i have seen in many other circuits even stun guns like the attached G. L. CHEMELEC circuit
T1,T2
This is a very tough question to answer simply because of the fact that there are so many reasons. The only one that knows exactly why the 2 coils are tied together is the designer of the circuit. Track him down if you need to know, he/she will explain it better than anyone in here can.