The Alarm, Sensor & Security Circuit Cookbook
This text is aimed at technicians, hobbyists, and students and provides complete circuit diagrams and building instructions for a wide range of creative sleuthing applications. The designs are fully tested and proven effective in real-world alarm, sensor, and security equipment.
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Sensors and detection circuits
New film sensor technology
New sensors ICs and gassensing technology
5 other sections not shown
1N4001 silicon diode 25-V capacitor disk 25-V electrolytic capacitor 4-W resistor 555 timer IC activate adjusted alarm control box alarm system Allegro Microsystems antenna applications audio battery bugs burglar buzzer cameras capacitive chip coil connected coupled decoder Description 1 R1 detect device door drive DTMF electronic false alarms frequency Fresnel lens Hall-effect infrared input install interface lamp light list Quantity loop low-cost low-current relay magnetic metal meter module monitor mounted National Semiconductor normally closed normally open op amp operate optical oscillator output P.O. Box piezo piezo film portable alarm potentiometer power supply protect pulse pyroelectric sensor Quantity Part Description reed switch reset resistor 1 R2 sensing sensitive shown in Fig signal siren smoke detectors SPST storm warn telephone dialer thermistor timer touch switch transmitter trigger ultrasonic vibration sensor video sentry videophone voltage wire wireless zener diode