Quote: Originally Posted by frostband
hey, you say this thing won't survive a crank. Is it possible to put in a a 15V or 18V (or possibly higher) Zener diode to dissipate any voltage higher than 15/18 V so that the power supply doesn't take a large hit?
The problem isn’t the higher voltages - it can take from 10 to 30 v - it’s the lower voltages. If the battery drops below 10V the psu will shutdown. Some cars drop a lot below 10v when cranking.