electroRF Member Nov 27, 2013 #1 --Edit--- Sorry, I got a mistake in the design, please let re-deisgn and then I'll update that post. Hi, I got a 5V relay which I want to drive with 3.3V pins of uC. A & B are coming from the uC. I designed the following H-Bridge. In the following design, the inputs must not be (A,B) = (1,1). The two diodes are must right? for over-voltage protection in each direction. Thank you. Last edited: Nov 27, 2013
--Edit--- Sorry, I got a mistake in the design, please let re-deisgn and then I'll update that post. Hi, I got a 5V relay which I want to drive with 3.3V pins of uC. A & B are coming from the uC. I designed the following H-Bridge. In the following design, the inputs must not be (A,B) = (1,1). The two diodes are must right? for over-voltage protection in each direction. Thank you.