OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › AC/DC PS using LM2596 › Reply To: AC/DC PS using LM2596
September 30, 2015 at 8:53 am
#40400
djagerif
Participant
The zener and resistor is for clamping and will cause the fuse to blow if something goes wrong and output rises to more than 5v. Your design should use a fixed regulator as Ray stated, the design for a variable one is different, check the datasheet again.
Ingo