Brownout detected 16F877

[DavyJones]

Hi all... I'm not sure what is causing the brownout on my pic but it is most likely a design flaw of my circuit. I'll start by: The brownout is tripped when the pic senses a voltage drop that could affect it correct? I am using 2 pins on the pic to trip these 2 reed relays, I have the relays going to +5vdc on one side and to the porta.2 and porta.5. I do not have any pull up resistors or anything else wired into the relays. When I want to trip the relays I set the appropriate port to 0, porta.2=0 when I am ready to shut the relay off I set porta.2=1 every once in a while when I shut the relays off the device just reboots. I am guessing this is the brownout event taking place. I realize I am not laying out my entire circuit here but I thought I would start with this just to see if anyone has any suggestions on what I might check or look for to try and troubleshoot this. If anyone has any ideas on what to check or suggestions I would appreciate it.
Thanks
David

[mackrackit]

Flyback diode on the relays may help.

[DavyJones]

Flyback diode on the relays may help.

Mack, Thanks I will give that a try. That would just be a simple Schottky diode across the load of the realy right?

Thanks
David

[mackrackit]

Any type is better than none.
http://en.wikipedia.org/wiki/Flyback_diode

[DavyJones]

[QUOTE=mackrackit;76156]Any type is better than none.
http://en.wikipedia.org/wiki/Flyback_diode[/QUOTE

So far so good... It has not rebooted itself since I added the flyback diodes to the circuit.

I'm very appreciative of the people in this forum you're always a great help.

David

[mackrackit]

Cool! That makes my day