Home Search
intruder - search results
If you're not happy with the results, please do another search
Wire Break Alarm With Delay
Here is a simple circuit of wire-break alarm that activates after a delay of 15 to 30 seconds. When the thin-wire loop running across the entrance door is broken, the alarm sounds after a delay of 15 to 30 seconds, the time period set through VR1.
Simple Low Power Inverter
Here is a simple low power inverter that converts 12V DC into 230-250V AC (DC to AC Converter). It can be used to power...
Long-range Burglar Alarm Using Laser Torch
Burglar alarm using laser torches, normally work in darkness only. But this long-range photoelectric alarm can work reliably in daytime also to warn you...
8 Digit Code Lock for Appliance Switching
This 8 digit code lock is useful for appliances requiring exclusive or authorised use by those who know the preset code. If desired, the...
Window Charger
Keep away intruders with this compact electrified window charger. The charger produces non-lethal shocks that are strong enough to threaten intruders.
Window Charger Circuit
The circuit...
Anti-Theft Alarm for Vehicles
This simple and inexpensive anti-theft alarm circuit for vehicles sounds an alarm simulating a police siren whenever someone attempts theft of your vehicle. The...
Micro-Power Flasher
With this micro-power flasher you can baffle the intruders trying to break into your home. The unit continuously emits flashing light both during day...
LOW CURRENT, HIGH VOLTAGE POWER SUPPLY
A high voltage power supply is a very useful source which can be effectively used in many applications like biasing of gas-discharge tubes and...
Little Door Guard
If some intruder tries to open the door of your house, this circuit sounds an alarm to alert you against the attempted intrusion.
The circuit...
Glass Break Alarm
This circuit can be used for sounding an alarm to detect the breaking of a glass window by an intruder, even when the intruder...