hello friends, thanks for you efforts. the working is not exactly clear in my mind.
i dont quite understand what the transistor is doing there. is it in cut of or sat or active region initially? and what happenes when opamp o/p goes +Vsat to the Base collector junction?
Its a pnp transistor, When pin 6 is High +V its OFF, when pin 6 is low 0V its ON
i would also have to do some reading on relays. i have no clue what they are. can u provide me a link?
basically we got this project made from someone else and now its explaination time in college. in our project, based on the same circuit, an led glows when we provide heat to the thermistor. now i am not sure if the led is IN 4148.
this is the difficulty we are facing for not doing it ourselves.