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=security system with anti theft alarm – Circuit Schematic
=security system with anti theft alarm
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utilizing ldr for alarm lamp – Circuit Schematic
utilizing ldr for alarm lamp
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simple rain alarm circuit using ne 555 – Circuit Schematic
simple rain alarm circuit using ne 555
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protect your home laserbeams – Circuit Schematic
protect your home laserbeams
Hello all Well, i live in South Africa, and as I`m sure many of you know, we have quite a bit of crime going on. So I was looking around for some.....
fire alarm circuit with temperature – Circuit Schematic
fire alarm circuit with temperature
Fires can occur for several reasons, for example, forgot to turn off equipment that could cause such as irons, fire alarm circuit with a temperature sensor may ...
home security system – Circuit Schematic
home security system
The basic design of this project will use a Atmel AT89S8252-24PC Microcontroller, since this micro has 2KB of EEPROM that can be used to store data during runti...
how to build fridge door alarm – Circuit Schematic
how to build fridge door alarm
The main purpose of this design was to obviate a small defect of the very popular Fridge Door Alarm circuit, available on this website since 1999 and built by a...
rc emergency locator alarm – Circuit Schematic
rc emergency locator alarm
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5 zone alarm circuit – Circuit Schematic
5 zone alarm circuit
This is a complete alarm system with 5 independent zones suitable for a small office or home environment. It uses just 3 CM IC`s and features a timed entry / ex...
build homemade gsm car security system – Circuit Schematic
build homemade gsm car security system
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555 timer touch activated alarm circuit – Circuit Schematic
555 timer touch activated alarm circuit
This is the circuit diagram of touch activated alarm system which still activated on load shedding. Alarm system will be activated when someone touch the touch ...
Alarm Phone Dialer – Circuit Schematic
Alarm Phone Dialer
Just hook this Alarm Phone Dialer up to something you would like to monitor, for example, a high water alarm, low temperature alarm, back window, garage door, e...
Replacing the driver board in an old-school door chime – Circuit Schematic
Replacing the driver board in an old-school door chime
replaced their doorbell button with one that lights up and found that the chime wouldn`t stop sounding after the button was pushed. These lighted buttons use an...
Laser Alarm Circuit – Circuit Schematic
Laser Alarm Circuit
I had a very basic understanding of electronics and how they worked, so when my friend asked me to look at a schematic he found on the net, I jumped at the chan...
Tilt Sensor Alarm Circuit – Circuit Schematic
Tilt Sensor Alarm Circuit
This is a design for simple circuit of the tilt sensor alarm presented here can be fabricated using readily available inexpensive components. The circuit is a t...
theft preventer alarm circuit – Circuit Schematic
theft preventer alarm circuit
This circuit utilising a 555 timer IC can be used as an alarm system to prevent the theft of your luggage, burglars breaking into your house etc. The alarms goe...
electronic combination lock circuit – Circuit Schematic
electronic combination lock circuit
a simple electronic combination lock using IC LS 7220. This circuit uses a relay for controlling any type of device when the combinations of four digits are pre...
Ultrasonic Radar – Circuit Schematic
Ultrasonic Radar
It is very interesting project with many practical applications in security and alarm systems for homes, shops and cars. It consists of a set of ultrasonic rece...
Alarm Circuit Using Keypad – Circuit Schematic
Alarm Circuit Using Keypad
This is a design circuit for alarm circuit. This circuit is controlled by keypad. For the core of the circuit is using a single transistor with BC547 series. Th...
Burglar alarm – Circuit Schematic
Burglar alarm
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