The standard PICO power supplies are designed to be run off a regulated 12 volt PSU, not a 12 volt battery.
Only the wide range units are designed for car use - and some of them will survive an engine starting cycle which is handy since you PC will not reboot when starting the car, boat, etc as the starter motor pulls down the battery voltage. I've had really good luck with those little power supplies. Someone in China is making a Pico power supply clone but I have no idea whether or not they are any good. They were selling them on Ebay. Dave On 5/14/2012 8:15 AM, Ted Hyde wrote: > dave wrote: > >>> Hi all, >>> >>> Sometime ago I bought a D510MO to replace my aging 1.2 GHz Duron. I'm >>> finally frustrated enough with the present cpu, etc. to actually >>> upgrade. ;-) >>> >>> http://www.logicsupply.com/categories/power_supplies/dc_converters?gclid=COeJt5m4_q8CFSIHRQodoQGGHA >>> >>> I've been looking at the power supplies in the above link. Does anyone >>> have experience, recommendations, etc. Further what are people using >>> for the 12 VDC source; or is the preferred method to use a battery >>> charger and go with one of the supplies that will tolerate>= 14 V? >>> >>> > Dave - I have a handful of the older units in service (of both the > standard and wide-input variety) and the standard 12v units would > literally shut down at 13.0v input as "overvoltage" - and that > protection spec was clearly listed in the datasheet with the units. If a > brick (other than theirs - I never tried their versions) went slightly > out of compliance, which could be common, the unit would shut down > often, and tough to trace. How the CarPC guys got these to work > reliably, is beyond my guess. It was a little bit of a challenge in many > cases trying to use an existing DC buss (utility 12v) that wasn't > tightly regulated. If it was close to 12v, the wide input wouldn't work > (14-35v), if it went slightly over 12, the standard wouldn't work. I > eventually started feeding them with a dedicated DIN-mount adjustable > power supply (the typical MeanWell style, 12 or 24v), adjusted slightly > under, and then monitored to give a good average based upon the load. > Spike draws (such as hard drive spindle motors) were eliminated as much > as possible (by using CF card storage, etc) and fans were placed on > their own alternate buss. I've noticed that the current online spec > sheet for the standard PicoPSU says PG is acceptable between 10.5 and > 13.5 vdc. It's not a "bold statement spec" - you have to hunt for it. > However, I'd believe it in that if you fed 13.6, it would shut down..... > > Cheers, > Ted. > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
