Re: Looking for a pulse switch? Does such a thing exist?

On 31 May 2006 05:36:27 -0700, in sci.electronics.design
"dave_bonnell@xxxxxxxxxxx" <dave_bonnell@xxxxxxxxxxx> wrote:

Hi all,

I have a battery-based application powering a 12V light. I want to
pulse the light on and off automatically (similar to a strobe). The
duty cycle will probably be around 10%, but I'd accept just about
anything if the solution is simple enough.

I want to avoid use of PIC or other microcontrollers, as that would
likely require power regulators...recall, I'm using a 12V "dirty"
source. Not only that, but the intended use is in a somewhat harsh
environment (severe vibration, moisture) and I have very little space
(the 'switch' must be attached to the light itself).

So, does anyone know if there any ready made products (or simple
solutions) to pulse a light on/off?

Cheers,
Dave
An LM555 from national semiconductor, sounds ideal for this sort of
thing


martin
.

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