Warning circuit of lock theftproof in limited time

The utility model discloses a warning circuit of lock theftproof in limited time, including chip IC1, electrode slice A, resistance R1 and triode V1, resistance R1's one end connecting resistance R2, resistance R6, electric capacity C4, triode V2's collecting electrode, triode V3's collecting electrode, triode V6's projecting pole, switch S1, chip IC1's pin 4, chip IC1's pin 8, chip IC2's pin 4, chip IC2's pin 8 and chip IC3's pin 2. The utility model discloses warning circuit adopts electrode slice cooperation lock to constitute the hidden pickproof lock, reminds the user to the chimes of doom that sends that the burglar who attempts to pry open the lock or destroy the burglary -resisting door can be timely, then can not send the chimes of doom to normal opening the door, consequently very big reduction the vexation of bringing for the user because of the wrong report, consequently have accurate, disguised high, the advantage that the misstatement rate is low of control.