Car alarm - an active insurance policy

r alarm elektor June 1982 — 6-47 Electronics are finding their way into the car more and more these days. This is not confined to the up-market models either. The application of the majority of electronic circuits in the car are related to energy and cost saving. This normally takes the form of electronic ignition and timing systems of varying complexity. Another obvious appli- cation of electronics is the protection against theft of the vehicle. As well as protecting the car, the alarm system described here also provides protection for accessories such as radio, cassette deck and CB rig. In many cases it is not the car itself that is stolen, but its contents! ear alarm an active insurance policy Although cars are insured against theft, most motorists will agree that it is preferable not to make use of the policy. The major advantages of the circuit described in this article are automatic resetting and protection against false alarms, which is not only a good thing for the owner...