At 09:56 PM 11/12/97 +0200, you wrote:
>Robert Nansel wrote:
>
>> >Hi All
>> >My PIC based alarm system has been blown up with a High Voltage
>> >zapper; those handheld units for shocking people/animals...
>> >Apparently this is a new craze among burgulars. Thy kill home alarms,
>> >car alarms and cct video with these zappers.
>> >
>> >Short of using screen cable for every sensor, is there other devices
>> >or goodies that can protect alarm systems from this assault????
>> >
>> >Regards
>> >Cassie


This sounds very strange to me. I don't understand why a car alarm would
have any external sensors, or why the CCD camera on a business alarm system
couldn't be sheilded behind glass or put up too high to get at.

I thought that car alarms sensed vibration of the car. Can't this be done
with a sensor that is well within the body of the car, away from access?

I'm sure that there is something that I am not thinking about, but I can't
think of what it might be.

Sean

Sean Breheny,KA3YXM
Electrical Engineering Student