Simple touch type delay burglar alarm circuit diagram

Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM
SMD aluminum electrolytic capacitor
Photocoupler

As shown in the figure, the circuit consists of a monostable delay circuit consisting of 555 and so on, a four-sound KD-9561 audio alarm circuit and a TWH8751 power switch circuit. When the human hand touches the metal piece M, the inductive noise is applied to the 2 feet of the IC3. The one-shot circuit is triggered to enter the transient state, and the one-shot delay time is about 10~120 seconds. After triggering the inverted 555 output high level, the VT tube is saturated and turned on, the power supply voltage is added to IC2, IC1, and the KD9561 emits a siren signal, which is amplified by the power switch circuit TWH8751 to push the speaker to sound an alarm. The delay time is up, IC3 is reset, and the alarm sounds.



Cassette Type PLC Splitter

PLC splitter is a type of optical power management device that is fabricated using silica optical waveguide technology. It features small size, high reliability, wide operating wavelength range and good channel-to channel uniformity, and is widely used in PON networks to realize optical signal power splitting.


Bwinners provides whole series of 1×N and 2×N splitter products that are tailored for specific applications. All products meet GR-1209-CORE and GR-1221-CORE requirements. Fiber Optic Splitter Plc, Fiber Optic Cable Splitter, Optical Splitter, Mini Type Plc Splitter, Cassette Type Plc Splitter, Insertion Module Plc are available.


Features:

Low insertion loss and low PDL
Various coupling ratio
Environment stable
Single mode and multimode available
High Reliability and Stability
High Channel counts
Wide wavelength range
Customized packaging and configuration


Applications:
FTTx Construction

Fiber Optical communication system

Fiber Optical access networks

Fiber Sensor
Fiber CATV networks
Local area networks

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