> From: piclist-bounces@mit.edu > [mailto:piclist-bounces@mit.edu] On Behalf Of Vasile Surducan > > On 9/16/05, alan smith wrote: > > I am looking, and actually prefer a china source (lower cost of > > course) for an door solenoid, running on 12VDC (well....6VDC is > > preferred but most run 12V I believe). > > 12V yes, DC NO. Because of the magnetisation problems. All > door locks solenoids are using either AC, either DC with > polarity reversal. > How do modern automobiles power door solenoids? I have not examined the electrics from a new vehicle, but I have had to cannibalize parts from (American made) cars made in the 70's and 80's, and I assure you that they were using unadulterated 12VDC to power the door lock solenoids. Of course, those were simpler times with far fewer electronic devices in an automobile, and the factories were less concerned about the sound of OEM audio so things may have changed since then. That's why I'm asking. - Glenn Minch -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist