- Fri Oct 05, 2007 5:07 am
#35982
Hiya
I'm building (or had built) a gps tracker using the telit GM862-GPS and its development board, to power it I built a 5V 5A switch mode power supply (so it wouldn't get upset running on a 12V system in a car), once built it ran nicely on anywhere between 6V to 30V on the bench supply, however when i plugged it into the cars supply it blew up, the molex connector on the bottom of the telit chip set is deformed (though there does not appear to be any damage inside the chip set itself, then again trying to repair it with the available equipment would be almost impossible) and outside the chip on the develepoment board the largest either resistor or diode (its hard to tell the package is a tad black and missing) is rather blown up. the only idea i have been able to come to as to why it blew up is the aerials where on the same earth as the incoming supply has anyone seen anything like this and can anyone offer any help to get my project going again
thanks for your help
Andrew
I'm building (or had built) a gps tracker using the telit GM862-GPS and its development board, to power it I built a 5V 5A switch mode power supply (so it wouldn't get upset running on a 12V system in a car), once built it ran nicely on anywhere between 6V to 30V on the bench supply, however when i plugged it into the cars supply it blew up, the molex connector on the bottom of the telit chip set is deformed (though there does not appear to be any damage inside the chip set itself, then again trying to repair it with the available equipment would be almost impossible) and outside the chip on the develepoment board the largest either resistor or diode (its hard to tell the package is a tad black and missing) is rather blown up. the only idea i have been able to come to as to why it blew up is the aerials where on the same earth as the incoming supply has anyone seen anything like this and can anyone offer any help to get my project going again
thanks for your help
Andrew