Re: Prevent signal when device is turned on
- From: jasen <jasen@xxxxxxxxxxx>
- Date: 23 Mar 2007 21:08:12 GMT
On 2007-03-21, grubertm@xxxxxxxxx <grubertm@xxxxxxxxx> wrote:
I have one of the output pins of a 16F84A hooked up to a transistor
which in turn drives a relay. Though the software can drive that pin
low, my concern is that during power up there might be enough current
to switch the transistor.
does startup take long enough for the relay to respond?
IOW: does that really matter?
Since this is a kit-type project I can not do major modifications, so
is there a simple way to bypass the base for a brief period of time
and only when the signal is high for a longer time will it actually
switch the transistor ?
huh?
a capacitor to ground will slow the response a bit.
Bye.
Jasen
.
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