Controlling switches with a PIC

[krohtech]

Would the 5V dc wire (connected to "C") be brought to ground when the pic pin is high?

The 2n2222 is an NPN BJT transistor.

See: http://en.wikipedia.org/wiki/2N2222

Yes, when voltage is applied to the base, current will flow from C to E. When the base is low, there is no flow.

[TonyA]

Thanks for the help, I appreciate it.

Would the 2n2222 work for my application? (i.e. just pulling a 5V wire to ground?) Which transistor would you recommend?

Thanks again,

TOny

[skimask]

Thanks for the help, I appreciate it.

Would the 2n2222 work for my application? (i.e. just pulling a 5V wire to ground?) Which transistor would you recommend?

Thanks again,

TOny

Use the 2N2222. As long as you aren't pulling a zillion amps thru it, you'll be fine.
Just make sure you read and understand how to do so...

[Darrel Taylor]

(i.e. just pulling a 5V wire to ground?) Which transistor would you recommend?

None!

Just use the Tri-State output of the PIC.

PORTB.0 = 0   ; Pin goes to gnd when not Tri-Stated

TRISB.0 = 0   ; Output to Ground
;....
TRISB.0 = 1   ; Output Tri-Stated

Added:
If there's any possibility that the external 5V is higher than the PIC's 5V?
Use PORTA.4 instead. It doesn't have the VDD voltage limit.<br>

[TonyA]

Darrel, and FalingTrea thanks. I was wondering about that. Thanks again.

Tony