The other recent thread on fuel pumps triggered a question - I know we put flyback diodes on the starter and master relays to handle the "inductive spike" when turning them off, but why not the fuel pumps?
Here's a couple of videos talking about the phenomena:
https://www.youtube.com/watch?v=LXGtE3X2k7Y
https://www.youtube.com/watch?v=OE9TvfyC5EY
I have the Andair PX375-TC and it's working great, and perhaps it has a snubber diode built in since the suggested wiring diagram does not include a diode, but wanted to check with the VAF brain trust to see it's something I should consider. I guess I could break out the handy-dandy USB oscilloscope to see if it shows a spike...
Here's a couple of videos talking about the phenomena:
https://www.youtube.com/watch?v=LXGtE3X2k7Y
https://www.youtube.com/watch?v=OE9TvfyC5EY
I have the Andair PX375-TC and it's working great, and perhaps it has a snubber diode built in since the suggested wiring diagram does not include a diode, but wanted to check with the VAF brain trust to see it's something I should consider. I guess I could break out the handy-dandy USB oscilloscope to see if it shows a spike...