The Yamaha AN1x Synthesizer mailing list

Rob Hill a \ufffdcrit :

>  I didn't get an original PSU with mine but the one supplied was a generic 11.5v 600mah. Is this correct for the AN1X? Whats the rating of the proper Yamaha PSU, the manual doesn't give anything away?
> 
> Regards
> 
> Rob.
>  
>
The original power supply is rated at *12 V DC - 700 mA* . It is 
unregulated (mains transformer followed by a rectifier bridge and a 
capacitor).
It's not far from yours .... i think the lack of maximum current could 
be a problem, the 0.5 V no because there are internal voltage regulators 
to provide the "right" voltages (i.e. 5 V DC for the logic circuits, 3.3 
V for the static RAM battery ...) which are always lower than the input. 
When you need higher voltages or split polarity supplies you will find 
more or less integrated DC/DC converters with a step - up chopper 
somewhere , or an oscillator driving a transformer . For example to give 
the classic +/- 15 V for op-amps or D/A converters .
Cheers
J.F.

>  
>       
>---------------------------------
> Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your freeaccount today.
>
>[Non-text portions of this message have been removed]
>
>
>
>
>---
>avast! Antivirus: message Entrant propre.
>Base de donn\ufffdes des virus (VPS): 000737-2, 30/04/2007
>Test du: 01/05/2007 20:57:46
>avast! - copyright (c) 2000-2007 ALWIL Software.
>http://www.avast.com
>
>
>
>  
>



---
avast! Antivirus: message Sortant propre.
Base de donn\ufffdes des virus (VPS): 000737-2, 30/04/2007
Test du: 01/05/2007 21:13:40
avast! - copyright (c) 2000-2007 ALWIL Software.
http://www.avast.com