using analog circuit to create a constant signal from a pul...

Archiver

In a message dated 6/28/2003 11:42:16 PM Pacific Daylight Time, rfan@j...
writes:

> i have a pulsing signal (a horn that goes beep-beep-beep). it pulses
> at 12V. i have a siren which i want to connect to it which requires
> a constant 12V. right now as it is hooked up, the siren simply
> pulses along with the horn. is there anyway (i'm thinking with
> capacitors) to give myself a 12V constant?
>
>

So you want the 12 volt siren to sound only when the pulsing horn is
pulsing...is that correct? Are you using a basic stamp to control the pulsing
horn?
If yes do you have any unused output pins. Regardless of whether or not you
are using the Basic stamp, your objective can be obtained, but probably not with

a reasonable about of capacitors....

Write back with more detail.....Basic Stamp or not? How is the pulsing horn
turned on? etc


[noparse][[/noparse]Non-text portions of this message have been removed]

Archiver

correct, i want the siren to go off when the horn is pulsing. the
basic stamp is not control the horn. I do not have any control over
the turning on of the horn.

hope you can help.

--- In basicstamps@yahoogroups.com, smartdim@a... wrote:
> In a message dated 6/28/2003 11:42:16 PM Pacific Daylight Time,
rfan@j...
> writes:
>
> > i have a pulsing signal (a horn that goes beep-beep-beep). it
pulses
> > at 12V. i have a siren which i want to connect to it which
requires
> > a constant 12V. right now as it is hooked up, the siren simply
> > pulses along with the horn. is there anyway (i'm thinking with
> > capacitors) to give myself a 12V constant?
> >
> >
>
> So you want the 12 volt siren to sound only when the pulsing horn
is
> pulsing...is that correct? Are you using a basic stamp to control
the pulsing horn?
> If yes do you have any unused output pins. Regardless of whether
or not you
> are using the Basic stamp, your objective can be obtained, but
probably not with
> a reasonable about of capacitors....
>
> Write back with more detail.....Basic Stamp or not? How is the
pulsing horn
> turned on? etc
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]

Archiver

--- In basicstamps@yahoogroups.com, "Rfan622" <rfan@j...> wrote:
> correct, i want the siren to go off when the horn is pulsing. the
> basic stamp is not control the horn. I do not have any control
over
> the turning on of the horn.
>
> hope you can help.


Look at the PWM circuit. the pulsing would charge the cap and
instead of an op-amp, you could use a comparitor.

Of course, you could use a 555 to pulse the horn and use one signal
out to operate the 555 and the siren.

Dave




>
> --- In basicstamps@yahoogroups.com, smartdim@a... wrote:
> > In a message dated 6/28/2003 11:42:16 PM Pacific Daylight Time,
> rfan@j...
> > writes:
> >
> > > i have a pulsing signal (a horn that goes beep-beep-beep). it
> pulses
> > > at 12V. i have a siren which i want to connect to it which
> requires
> > > a constant 12V. right now as it is hooked up, the siren simply
> > > pulses along with the horn. is there anyway (i'm thinking with
> > > capacitors) to give myself a 12V constant?
> > >
> > >
> >
> > So you want the 12 volt siren to sound only when the pulsing horn
> is
> > pulsing...is that correct? Are you using a basic stamp to control
> the pulsing horn?
> > If yes do you have any unused output pins. Regardless of whether
> or not you
> > are using the Basic stamp, your objective can be obtained, but
> probably not with
> > a reasonable about of capacitors....
> >
> > Write back with more detail.....Basic Stamp or not? How is the
> pulsing horn
> > turned on? etc
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]