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Rain and water alarm circuit – Circuit Schematic
Rain and water alarm circuit
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Police siren circuit – Circuit Schematic
Police siren circuit
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Morning alarm circuit – Circuit Schematic
Morning alarm circuit
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3 mode siren circuit with schematics – Circuit Schematic
3 mode siren circuit with schematics
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combination lock in electronic – Circuit Schematic
combination lock in electronic
This is the circuit diagram of a combination lock electronic simple using CI LS7220. This circuit can be used to activate a relay to control (the & off) press a...
Water triggered alarm system using 555 – Circuit Schematic
Water triggered alarm system using 555
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Simple siren circuit – Circuit Schematic
Simple siren circuit
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Fridge door alarm project – Circuit Schematic
Fridge door alarm project
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Dog repellent project circuit – Circuit Schematic
Dog repellent project circuit
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Alarm system using radio waves circuit – Circuit Schematic
Alarm system using radio waves circuit
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Alarm circuit for water level display – Circuit Schematic
Alarm circuit for water level display
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Alarm circuit for snoring prevention – Circuit Schematic
Alarm circuit for snoring prevention
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gas leakage alarm – Circuit Schematic
gas leakage alarm
LPG gas is supplied in pressurized steel cylinders. As this gas is heavier than air, when it leaks from a cylinder it flows along floor and tends to settle in l...
simple fire alarm circuit – Circuit Schematic
simple fire alarm circuit
A simple fire alarm circuit based on a LDR and lamp pair for sensing the fire. The alarm works by sensing the smoke produced during fire. The circuit produces a...
laser door alarm circuit – Circuit Schematic
laser door alarm circuit
This is a circuit for laser door alarm is based on the interruption of Laser beam. A low cost Laser pointer is used as the source of light beam. When somebody b...
electronic doorbell circuit – Circuit Schematic
electronic doorbell circuit
This is a design for a door alarm circuit, but in this design using electronic system. This circuit uses a synthesized sound chip from Holtek, the HT-2811. This...
buzzer set – Circuit Schematic
buzzer set
Building a Competition Buzzer Set, described the construction of a contest buzzer set. Additional reference material and parts are available, as described belo...
fire alarm circuit using ic 555 – Circuit Schematic
fire alarm circuit using ic 555
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electric fence schematic – Circuit Schematic
electric fence schematic
Do employ this electric fencing solution because they must commonly operate in regions with dry ground. A schematic Electric Fence Charger Schematic. by KC Mylr...
supervisory control relay – Circuit Schematic
supervisory control relay
This SCADA controller is designed for use with distribution (13. 2kV/4. 8kV) substation transformer breaker positions where an automatic throw-over is present. ...