Javier Puiggros Vogel <vgr@interaccess.cl> wrote:

> I have a pic16c74A connected to 4 PCB relays (5V) to open valves for
> humidity control, but sometimes the program reset and start again.
> The reset happen when the solenoid valves turn off. I tried using
> some caps in mclr and vdd pins but the problem don't go. I don't
> know if there is an special values for the caps, or another solution
> than putting caps in the pins processor some help?

Javier:

Do you have diodes across your relays?

-Andy

=== Andrew Warren - fastfwd@ix.netcom.com
=== Fast Forward Engineering - Vista, California
=== http://www.geocities.com/SiliconValley/2499