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Neotek Series 2 Power Supply
Posted: Sun Feb 13, 2005 2:15 pm
by el_goodo_Archive
Greetings all - my first post...
I may have the chance to pick up some series 2 channel strips soon, but I can't find any schematics or power supply info on the web. I would be racking up 6 strips and would like to DIY a power supply or rebuild an old one. Anybody know what voltages are required and the current draw per module? Anyone have schematics for the strips and supply? Any help would be greatly appreciated. Thanks in advance.
Neotek Series 2 Power Supply
Posted: Wed Feb 16, 2005 9:18 pm
by greg_Archive
You need +- 18 Volts (.5 amp or greater current per rail), and a 48 volt rail for phantom power (.2 amps or more will be enough for 6 channels).
All the rails should be fused for safety.
A great company that makes power supplies is Power One. They offer over the phone help and they are clean.
I wouldn't advise getting an old Neotek psu. It would be a hassle to make it as good as a premade one.
Good luck.
Neotek Series 2 Power Supply
Posted: Wed Feb 16, 2005 11:03 pm
by el_goodo_Archive
Cool, greg. Thanks. So you're saying .5 amps will comfortably supply 6 modules? Would you add any additional filtering or regulation to the power one supply?
Thanks again,
Robert
Neotek Series 2 Power Supply
Posted: Thu Feb 17, 2005 6:34 pm
by greg_Archive
1 amp. Yes that would be best. I just measured a channel with the bench supply and it sucked about 80 mA without anything going on. Sorry for the mis-info.
If it is going to be in its own box away from the modules you might want to have bypass caps where the power enters the module box. This will clean up any noise that might come from the cable run or leftover ripple. Start with a 220uF electrolytic cap in parallel with a .1uF cap across each rail (mind the correct polarities). The voltage ratings should be 1.5 to 2 times the voltage they are going to see. If you do this remember that they are there (as well as all the bypass caps on the channel strips) and will retain a nice charge after powering down. Wait a good bit of time before disconnecting the PSU from the modules so that the caps discharge.
You shouldn't need any more regulation. There are fancier P.S.s out there that have sense inputs that read the voltage at the end of the road (your module box) and adjust the PS for loss automatically. That would be overkill for this application however.
You might look into a PS that has short circuit protection. This will shut down the PS if there is a short, or over draw of current.