tyassin
Advanced Member level 1
LDMOS bias circuit
Hello,
This is a bias circuit for the gate of an LDMOS transistor. I can tell you that S5 in the picture is LM7805 and S4 is BCP56 NPN-transistor.
Can sombody tell me what is the purpose of the NPN-transistor(marked with the red circle). i can not really see the purpose of it when the emitter is not connected??
Thank you
Hello,
This is a bias circuit for the gate of an LDMOS transistor. I can tell you that S5 in the picture is LM7805 and S4 is BCP56 NPN-transistor.
Can sombody tell me what is the purpose of the NPN-transistor(marked with the red circle). i can not really see the purpose of it when the emitter is not connected??
Thank you