wireless digital code lock with a status display
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Simple Alarm Circuit
The simple circuit produces simple audible alarm like notification of sound, used as burglar alarm using five transistor....
Car Anti-Theft System
Audible signals will alert you if password/keycode entered is Accepted or not ( in this case, some random for wrong and Super Mario Song for success) via a stan...
StunGun circuit
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Alarm power supply circuit
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Audio CD4001 based on Car Alarm Circuit
This is a simple alarm circuit for a checkup with a 4001. It can be used to protect our home, motorcycle, car or any other application that comes to mind. In th...
Water Level Indicator With Alarm
This circuit not only indicates the amount of water present in the overhead tank but also gives an alarm when the tank is full. The circuit uses the widely avai...
Production of automatic re-set timer for crime prevention buzzer that uses PIC
The crime prevention bell device that I produced about 20 years ago works still in the active service. It worked many times to make the thief not operate well a...
Night Security LightCircuit
This simple circuit switches on a light around 2 hours after midnight, the time at which most of the robberies taking place. This simple circuit is build around...
Simple Multi-Tone Alarm Circuit
Figure shows the circuit diagram of multi tone alarm. This is basically an amplifier circuit. The central part of this circuit is the dual....
Electronic Mini Projects
Wireless Imaging Intruder Alarm app enables Home Security Smartphones to detect and send burglar pictures direct to your personal cell phone, PDA or computer wi...
all about wiring diagram
This is door knob touch alarm for your home security purpose. The alarm will be activated when someone touch the metal door knod. This circuit won`t work on ful...
Latest Wireless Car Alarm circuit diagram and explanation
This circuit is a wireless car alarm system that is built using two circuit modules, namely modules of transmitter and receiver modules. This circuit works on F...
High And Low Voltage Cut Off With Time Delay
The power line fluctuations and cut-offs cause damages to electrical appliances connected to the line. It is more serious in the case of domestic appliances lik...
with scr new alarm Window foil burglar
Here is a simple but effective burglar alarm circuit that can be fixed on windows to detect break throughs. The circuit uses a fine wire element fixed as a netw...
Latest Intruder Alarm Super Sensitive circuit and explantion
Here is the circuit diagram of an ultra sensitive intruder alarm. The shadow of an intruder passing few meters nearby the circuit is enough to trigger the alarm...
Railway Grade Crossing Circuit
The protected section of track can be as long or as short as desired and does not have to be the same length on both sides of the crossing. The circuit works in...
Police siren
This blog shows project documentations of various projects done by members of association of experimental electronics. Some projects are very easy and suitable ...
Car Wireless Alarm
This FM radio-controlled anti- annexation anxiety can be acclimated with any agent accepting 6- to 12-volt DC accumulation system. The mini VHF, FM transmitteri...
The 555 Door Alarm
My door alarm is a small device which sounds an alarm whenever the door is opened. It is ideally used when you want privacy, if you want to know if other people...