Activating circuit for triggering a code-controlled anti-theft security.

摘要: In the case of theft electronic apparatuses which are preferably installed in motor vehicles, order to prevent anti-theft security device being outwitted by apparatus connected a replacement electrical power source immediately after disconnected from supply network, positive discharge (forcible discharge) circuits used according prior art, charge capacitor event failure operating voltage and at same time activate protection device. These relatively complex (costly) not sufficiently secure against manipulation. With circuit arrangement invention, microcomputer-controlled monitoring is disclosed, essentially based on assemblies already present therefore represents very cost-effective solution.