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
500pcs 0805 (2012) SMD White LED Chip Surface Mount SMT Beads Ultra Bright Light Emitting Diode LED Lamp Electronics Components
$26.89Electronic Accessories & SuppliesAdd to cartSize ConversionInchesCentimetersPlease according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.DescriptionQuantity:500 pieces Size:2.0 x 1.2 (mm) / 0.08 x 0.05 (inch)Emitting Color:White (6000K-9000K)Luminous Intensity:180-210mcdViewing Angle:120 DegreeForward Voltage / Current:3V-3.2V | 20mAPolarity:Refer to the Arrow on the Reverse SidePackage included500 x 0805 (2012) …
5pcs AC 100-240V to DC 12V 5A 60W Switching Power Supply Module Driver Adapter LED Strip Light
$52.97Power Supply ModuleAdd to cartFeatures1. Good anti-interference performance and high reliability.2. Low operating temperature and long service life.3. Wide input voltage range, (100-240V) in line with global usage standards.4. Good insulation performance and high electric strength.5. Full load high temperature burning machine, 100% aging test.SpecificationsModel:HS-60-12DC output voltage:12VOutput voltage tolerance:±1%Rated output current:5AOutput current range:0 – 5ARipple and noise:100mVp-pLine stability:±0.5%Load stability:±0.5%DC …
4Pcs 5mm Reusable Clear Bent Glass Drinking Straws Water Juice Straws with Cleaning Brush
$22.26Bottles & JarsAdd to cartSpecificationColor:ClearMaterial:High Borosilicate GlassTube Mouth Shape:RoundTemperature Resistance:-20~450℃Total Length:21.5cm / 8.46inchInner Diameter:0.5cmFeatures– Non-toxic environmentally friendly green borosilicate heat-resistant material, safe to use, not stain, will not fade.– Widely used, can drink water, milk, juice, coffee, coke, soda, etc.– Could put it into the microwave for sterilization.Package Included4 x Glass Drinking Straws1 x Cleaning Brush
5Pcs Car Window Sun Visor Screen Car Side Rear Window Screen Sunshade Shield Curtain
$19.83Mesh & Wire ClothAdd to cartDescriptions5Pcs Car Window Sun Visor Screen Car Side Rear Window Screen Sunshade Shield CurtainSpecificationsSizeRear Sun Visor:50 * 100 CmThe Front Side Of The Sun Visor:36 * 44 CmThe Back Side Of The Sun Visor:36 * 44 CmMaterial:3D Photocatalyst MeshWeight:Approx.60 gFeatures– Convenient to use and take down with two suckers.– Can reflect 90% direct sunlight and …
5Pcs Car Window Sun Visor Screen Car Side Rear Window Screen Sunshade Shield CurtainRead More
5Pcs Micro USB TP4056 Charge And Discharge Protection Module Over Current Over Voltage Protection
$9.32Battery Protection ModuleAdd to cartCharacteristicOn-board TP4056 lithium battery charging management chipOn-board micro USB head, can be directly connected with most of the smart phone charger as the input side to the lithium battery chargingReserved IN+ and IN- input port, convenient user DIYOn-board charging status indicatorSupport charge discharge over current protectionChip with constant current and constant pressure, full automatic stopSupports …
Keyes Brick TEMT6000 Light Sensor(Pad hole) Analog Signal Module with Pin Header Version
$6.10Sensor & Detector ModuleAdd to cartDescriptionThis is a commonly used TEMT6000 light sensor which mainly uses TEMT6000X01 components. The component is a highly sensitive visible light sensitive (NPN) transistor. The sensor can magnify the change of the tiny light rays captured about 100 times, and is easily recognized by the microcontroller for AD conversion. Its response to visible light illumination …
Keyes Brick TEMT6000 Light Sensor(Pad hole) Analog Signal Module with Pin Header VersionRead More
100W18V Foldable Portable Monocrystalline Solar Panel with 5V USB Port
$301.75Smart Robot & Solar PanelAdd to cartFeatures– The outermost layer of the product is made of thick and breathable nylon bag. It`s easy to carry and portable coz it`s folable and has a handle, which is suitable for camping, hiking, hiking, and can be used as a backup power source for mobile phones and car batteries.– It`s equipped a USB&DC junction …
100W18V Foldable Portable Monocrystalline Solar Panel with 5V USB PortRead More
GY-213V-HDC1080 High Accuracy Digital Humidity Sensor with Temperature Sensor
$15.30Sensor & Detector ModuleAdd to cartDescriptionThe HDC1080 is a digital humidity sensor with integrated temperature sensor that provides excellent measurement accuracy at very low power. The HDC1080 operates over a wide supply range, and is a low cost, low power alternative to competitive solutions in a wide range of common applications. The humidity and temperature sensors are factory calibrated.FeaturesRelative Humidity …
GY-213V-HDC1080 High Accuracy Digital Humidity Sensor with Temperature SensorRead More
Reviews
There are no reviews yet.