3 Sets DIY Pyroelectric infrared Sensor Kits Anti-theft Circuit Electronic Technology Training Sets
$27.93
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Description
Size:82 x 44mm
Texture of material:Two-sided 1.6mm FR-4 board
Long life Low ESR
Function
Pyroelectric infrared sensor security circuit consists of pyroelectric infrared sensor PIR, integrated operational amplifier LM358, voltage comparator LM393, 110 alarm circuit and boot delay circuit, etc.. The circuit can be used as home security. When the family leaves the room, the switch K1 is closed, the circuit starts to work. As long as someone enters the room after a period of time, it will sound alarm.
1. The circuit is energized, the pyroelectric infrared signal of infrared sensor PIR to detect the front radiation of human body, from the signal PIR 2 feet output weak, after amplification transistor VT1, through the C2 input to the op amp IC2A 3 foot high gain low noise amplifier, and then by IC2A the inch1 footinch output signal.
2. IC2B in the circuit as a voltage comparator, its inch5inch pin voltage reference is provided by R10, VD1, IC2A when the inch1inch foot output signal to the IC2B inch6inch feet, inch5inch and inch6 footinch input voltage is compared, if at this time the inch6 footinch voltage ratio 5 feet high, 7 feet of IC2B from high level to low level. The C6 through the VD2 discharge, the IC3 2 feet into low level, if the voltage reference voltage of 2 feet inchthaninch 3 inchfeet of a resistance R14, partial pressure of R15 with low IC3, theinch 1 foot inchinto a high VT2 transistor conduction music chip IC4 theinch 2 foot inchvoltage, output audio signal after amplification transistor VT4, buzzer driver BELL issued 110 alarm sounds.
3. When people leave the detection area, IC2B’s inch7inch feet to high, VD2 cut-off, C6 has a charging time (30 seconds), making the buzzer delay alarm for 30 seconds.
4. VT3, R20 and C7. The time delay circuit, about 2 minutes (should be greater than the alarm delay time), to prevent the alarm immediately when starting up, let people have time to leave the scene, but also can prevent misoperation in power after the call.
Package included
3 x DIY pyroelectric infrared sensor kits
Weight | 0.081 kg |
---|
Customers Also Viewed
50A Maxi Car Fuse with Weatherproof Holder 8AWG (8B&S) Wire Dual Battery for Car
$18.35Module ComponentsAdd to cartSpecificationColor:Black + RedSpecs:50AWire Length:15 cm(8AWG)Features50 AMP Fuse is included.This product will withstand tough jobs.It is waterproof and very heavy duty in construction.This fuse kit is perfectly suited for projects involving:4WD, 4X4, Caravan, Dual Battery, Batteries, AC DC, 12-32 Volt.Package Included1 x Maxi Blade Fuse Holder (15cm 8AWG Wire Each Side)1 x 50 Amp Fuse
HX-2S-A10 2S 8.4V-9V 8A Li-ion 18650 Lithium Battery Charger Protection Board 8.4V Overcurrent Overcharge Overdischarge Protection
$4.36Battery Protection ModuleAdd to cartSpecificationsModel:HX- 2S-A10 Maximum working current:8AMaximum instantaneous current:16AStatic current:less than 10uA Resistance:less than 300 m Ω Charging voltage:7 V – 9VOvercharging range:4.25-4.35V plus or minus 0.05VOver voltage range:2.5-3.0V plus or minus 0.05 VWorking temperature:- 40 – + 50 →Storage conditions:- 40 – + 80 →Size:41 * 8 * 2.2 mm Short circuit protection:to protect and restore …
DL14S 14S 48V BMS Battery Protection Board 15A 20A 30A 40A 50A 60A Waterproof BMS for Rechargeable Lifepo4 Electric Charge Li Lipo NiCoMn ion Cells with Balance
$37.17Battery Protection ModuleAdd to cartCurrent 15A Type Common Port / Current 20A Type Common Port / Current 30A Type Common Port / Current 40A Type Common Port / Current 50A Type Common Port / Current 60A Type Common Port / Current 15A Type Separate Port / Current 20A Type Separate Port / Current 30A T
16V16.6F Automotive Rectifier Low Temperature Starter Super Farad Capacitor Module 2.7100F
$50.18Electronic Accessories & SuppliesAdd to cartFeaturesFast charge and discharge. Long life. Large capacity. High power density. Good low temperature characteristicsSpecificationBrand:GDCPHModel:16V16.6FSeries:Super capacitor (16V)Nominal capacity:16.6FTolerance:10 %Rated voltage:15-16 VOperating temperature range:- 40→~70→Lead spacing:120mmDimensions:120*62*20mm(Length *Height *Thickness)Height-installation (maximum):62mmInstallation type:weldingCase:Aluminum capacitorApplication scope:self-provided power supply, standby power supply, alternative power supply, mobile power supplyPackage included1 x 16V16.6F Super Farad Capacitor
HC-SR505 Mini infrared PIR Motion Sensor Precise infrared Detector Module
$6.55Sensor & Detector ModuleAdd to cartHC-SR505 Mini Infrared PIR Motion Sensor Precise Infrared Detector ModuleIntroductionHC-SR505 small body sensing module is based on infrared technology, automatic control products, high sensitivity, high reliability, ultra-small, ultra-low-voltage operation mode. Widely used in various auto-sensing of electrical equipment, especially battery-powered automatic control products.SpecificationSize:40 x 10 x 13mmNet weight:2gTechnical parameters1. Operating Voltage Range:DC4.5-20V2. Static current3. Output …
HC-SR505 Mini infrared PIR Motion Sensor Precise infrared Detector ModuleRead More
4 Blade Eco Friendly Heat Powered Wood Log Burner Fireplace Stove Fan Silent
$97.19Temperature ControllersAdd to cartFeatures– More efficient wood use – Use up to 28% less wood – Heat powered stove fan – increases the efficiency of your freestanding stove oven or wood / log burner to generate warmth economically– Eco-friendly and self-powered – a thermoelectric module acts as a small generator to power the fan’s motor– Operates automatically between …
4 Blade Eco Friendly Heat Powered Wood Log Burner Fireplace Stove Fan SilentRead More
15W Solar Charger Solar Power Panel Waterproof Folding Solar Panel Bag Solar Panel Charger
$66.81Solar PanelAdd to cartPackage Included1x 15W solar panel chargerSpecificationColor:BlackMaterial:Mono-crystalline Silicon+PET+ fabricExtended size:65*17*0.3cmFolded size:18.5* 11.5*2cmPower(MAX):15WMaximum Power Voltage (Vmp):5VMaximum Power Current (Imp):2ANumber of Cells:36pcsOutput:USB5VPackage:Neutral packagingCharging temperature:-20~70℃Waterproof:IP65Conversion rate:20%Application:security camera, laptops, car batteries, cars, coaches, ships, airplanes, satellites, space stations, outdoor farming, planting, tourism, solar street lights etcFeature– Durable and waterproof.– Light weight and thin shape can be stored more easier and …
15W Solar Charger Solar Power Panel Waterproof Folding Solar Panel Bag Solar Panel ChargerRead More
3pcs RX24 50W 100R 100RJ Metal Aluminum Case High Power Resistor Golden Metal Shell Case Heatsink Resistance Resistor
$9.36Electronic Accessories & SuppliesAdd to cartFeaturesIt has the characteristics of small size, high power and high precision.It is sealed by professional technology.It has the advantages of stronger heat resistance, higher temperature resistance, moisture resistance, high anti-vibration and explosion protection.Scope of application:Testing power supply, frequency converter, automobile LED lamp, automation equipment, audio, frequency divider, servo industry and other harsh industrial control …
Reviews
There are no reviews yet.