JINZONINGEN73 Posted May 23, 2007 Posted May 23, 2007 I have a motor, tracks, the regulator, the track cables... but no powerpack. >__< However, I do have an adjustable one with different volts and polarity and such, but not from Lego. So, what's the official powerpack say it's output is? (Should be on the block connecting into the wall). This question is for USA current (NTSC?), as I live in North America. ...don't wanna' go burnin' out my stuff... Quote
Landlubber Posted May 23, 2007 Posted May 23, 2007 NTSC is a video transmission standard, nothing to do with electricity. Not sure about the actual ouput, Probably 9V considering its the Lego 9V system. Quote
highlandcattle Posted May 23, 2007 Posted May 23, 2007 NTSC is a video transmission standard, nothing to do with electricity. Not sure about the actual ouput, Probably 9V considering its the Lego 9V system. Indeed this has nothing to do with NTSC. I would also suggest 9v but you might need to swith the polarity switch a picture of a real powerpack would be all we need. Quote
Mr Hobbles Posted May 23, 2007 Posted May 23, 2007 I used one myself until I got a proper LEGO one. It works under both 6v, 9v and 12v. 6v is really slow though. There isn't much difference on 12v, but I wouldn't run it as it could burn out the motor. Quote
JINZONINGEN73 Posted May 24, 2007 Author Posted May 24, 2007 Volts are the easy part... I'm more concerned with it's current (mA). Then again, I'm no electrical genius... maybe that doesn't even matter with the regulator... assuming the regulator lowers volts instead of mA ....OH, I DON'T KNOW LOL! Quote
Brickthus Posted May 25, 2007 Posted May 25, 2007 Volts are the easy part... I'm more concerned with it's current (mA).Then again, I'm no electrical genius... maybe that doesn't even matter with the regulator... assuming the regulator lowers volts instead of mA ....OH, I DON'T KNOW LOL! A standard LEGO train (or RCX) wall transformer puts out 7V AC at about 300mA. This becomes about 10V (x 1.414) due to the bridge rectifier and a little is lost in the regulator to give the 9V DC output of the controller. The circuit of the controller is here if that helps: http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1559700 I would advise against using a DC power supply to power a train controller as this would use only two of the diodes all the time instead of using all four in alternate pairs for the AC. I use a variable DC power supply connected directly to the track feed wire at exhibitions. Mark Quote
JINZONINGEN73 Posted May 27, 2007 Author Posted May 27, 2007 Most helpful. Luckily, I have transformers all over, one being 7V, 300mA. What did you mean by using only a "variable DC power supply"? Like, batteries and not to an AC socket? Quote
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