Date   : Tue, 22 Jun 2010 19:23:24 +0100
From   : bbcmicro@... (Ian Stocks)
Subject: Power supply

Rick Murray wrote:
> Hi,
> 
> I have a basic A7000 board, plus a standard (switchmode) BBC power 
> supply. I've managed to get the board running from just +5V and +12V 
> (don't know if that's all it needs?) and I'd like to know if this is a 
> reasonable comination. I don't know the output capabilities of the BBC 
> PSU, nor do I know the requirements of the A7000 board.
> I would, later, look to adding a NIC [*] and a small harddisc.
> 

I pressume the A7000 has similar requirements to the A7000+.

The A7000+ power supply is rated at :-
+5V 4.4A
+12 1.0A
-12 0.1A


My BBC power supply is rated at :-

+5V 3.75A
-5V 0.1A
+12V 1.5A

So the power supply looks a little underrated for the A7000, but with 
expansion card or CDROM it may be ok.

I pressume the -12 is used for sound circuitry or serial port, so may 
not be important depending on what you are using it for.

Ian.