Re: Latching relay question

Rich Webb wrote:
> On Mon, 23 Jun 2008 14:55:43 +0200, NoSp <NoSp@[EMAIL PROTECTED]
> wrote:

>> Or should I (in addition to this) add some capacitors across the 
>> +12V/GND and +5V/GND lines close to each relay as well?
> 
> The power supply will be on the upstream side of the relays and won't
> help to smooth the effects of any contact bounce on the load side of the
> relays. But, there's probably enough capacitance on the drive's power
> rails already.

Yes, that makes sense.
Should I connect something like a caramic capacitor across each of the 
relay's switch connections? Which capacitance values are we talking?


> The duration of the bouncing is typically around 10 msec and since it is
> from "on" to "open," not "on" to "ground," the drives should be
> perfectly happy. The digital ****tion will (should?) have a power-on
> reset circuit that holds itself in reset long enough to wait through the
> startup transients.

I would hope so ;-)