ac and dc psu

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Funnily enough, a DC PSU could work, even if the thing is expecting AC. It depends on the input circuitry. If it just uses a bridge rectifier then no problem. If their is some other doubler or circuit to generate +/- rails, etc. then more difficult. 

Maybe open the thing & see what's there.  

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Earplug Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216	Post Options Post Reply Quote Earplug Report Post Thanks(0) Quote Reply Posted: 08 May 2022 at 5:28pm
	Funnily enough, a DC PSU could work, even if the thing is expecting AC. It depends on the input circuitry. If it just uses a bridge rectifier then no problem. If their is some other doubler or circuit to generate +/- rails, etc. then more difficult. Maybe open the thing & see what's there.
	Earplugs Are For Wimps!

markie Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 31 October 2005 Location: Sunny Liskeard. Status: Offline Points: 4570	Post Options Post Reply Quote markie Report Post Thanks(0) Quote Reply Posted: 17 May 2022 at 2:42pm
	Update. I e-mailed the Alto support guys and got a reply today:- The earlier models were an 18vAC psu but apparently this fell foul of an EU directive. Thus later models were re-designed to use 18vDC.
	If it's got wheels or tits it's gonna cost a fortune

Lucasdude Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 16 March 2013 Location: London Status: Offline Points: 823	Post Options Post Reply Quote Lucasdude Report Post Thanks(0) Quote Reply Posted: 17 May 2022 at 4:51pm
	That's quite odd. I don't think I've ever seen a socket marked as AC, but also shows the polarity like that. It's just asking for trouble!