Re: Latching relay question

Rich Webb wrote:
> On Mon, 23 Jun 2008 12:50:11 +0200, NoSp <NoSp@[EMAIL PROTECTED]
> wrote:
>
>   
>> I'm planning to cut/supply power to an external SATA hard drive by 
>> having the +12V and +5V lines through a relay (dual pole), controlled
by 
>> a momentary push-button. But if the relay "wiggles" from one position
to 
>> another when activated I'm worried that this will in the long run harm 
>> the drive
> You should be fine. You could add some capacitance to the power lines to
> smooth over the bounces but be aware that slowly rising power can also
> cause some circuits to mis-behave so don't go overboard on monster caps.
>   

I haven't decided on a power supply yet, but I suppose a small switched 
type (as used with computers) is the best way to go. It'll be mounted in 
the same 1U 19" metal cabinet as the two SATA drives.
Such a power supply must surely have the needed capacitors already to be 
able to deliver clean and stable power?
Or should I (in addition to this) add some capacitors across the 
+12V/GND and +5V/GND lines close to each relay as well?