Automotive electronic locks circuit

Posted on Mar 28, 2007

Automotive electronic locks circuit principle is shown in Fig. ICl dedicated lock IC 5G058, it O ~ feet respectively external key switch to the positive power supply, which is

Automotive electronic locks circuit
Click here to download the full size of the above Circuit.

six valid input keys, unlock Sl ~ S6 must comply with this order; feet have connected key switch S7 is false key input, you can freely access one or a few keys on the keyboard mixed into real ones; a feet is the key indicator pin during each key communication will make the external light emitting diode emitting LEDl confirm that the key input is valid; ? feet alarm an output terminal, if not by Sl ~ S6 sequentially input or exceed the effective unlocking time, the output high, burglar alarm trigger IC2 language effectively unlocking time by the size of the capacitor C1 and potentiometer RPl to decide.

Leave Comment

characters left:

New Circuits



Popular Circuits

4W FM Transmitter with 2N2219
RC transmitter with MC68HC711
125Watt 150Mhz amplifier
Build a Variable-Frequency Audio Band pass FilterCircuit
Logic gate using current source and diodes
OP27 Fixed Gain Transformerless Microphone Preamplifier
Negative Auxiliary Voltage
Shortwave Monitor
Single-chip audio power amplifier circuit
555 constitute an ultrasonic transmitter circuit diagram
555 timer circuit diagram of a group of anti-jamming