EED
Newbie level 2
I am designing an automatic voltage regulator (AVR) for a generator. The isis file and image of simulation is attached. The output of AVR should be 70-80V DC accross diode D1.
Problem: The full-wave bridge rectifier works fine independently but gives zero output when it is connected to the rest of the circuit. The output of bridge should be 26V DC (at capacitor C1). The voltage accross diode D1 should be 70-80V DC.
Can you tell what is the actual problem with the bjt and mosfet circuit that is causing the output of bridge to go to zero?
Moreover, I couldn't find the isis model for bjt D882 so a replacement was used instead.
View attachment AVR Project.rar
Problem: The full-wave bridge rectifier works fine independently but gives zero output when it is connected to the rest of the circuit. The output of bridge should be 26V DC (at capacitor C1). The voltage accross diode D1 should be 70-80V DC.
Can you tell what is the actual problem with the bjt and mosfet circuit that is causing the output of bridge to go to zero?
Moreover, I couldn't find the isis model for bjt D882 so a replacement was used instead.
View attachment AVR Project.rar
