In this article I have explained a simple motorcycle ant-theft security alarm circuit using a tilt switch and a TTP223 touch switch. The circuit was requested by Mr. Sergei, as […]
Security and Alarm
Flashlight Activated Burglar Alarm Circuit
This flashlight triggered burglar alarm circuit will instantly switch ON an alarm as soon as it detects light from the burglar’s torch or flashlight. Burglars and thieves normally set out […]
Security Alarm Circuit using RCWL-0516 Microwave Radar Sensor
This security alarm circuit using RCWL-0516 microwave radar motion sensor will detect any moving thing in the restricted area and turn ON an alarm sound. The RCWL-0516 is basically an advanced […]
Footsteps Detector Circuit
By sensing vibrations from footfall, a Footsteps Detector Circuit is a creative and affordable approach for catching intruders. It employs a simple setup with a low-cost loudspeaker and a mute […]
Battery Low Voltage Alarm Circuit
Despite its simplicity, the Battery Low Voltage Alarm circuit has a very important function. It forewarns you of approaching battery failure so that you may run to the store and […]
AC 220V Over Current Monitor and Cut OFF Circuit
The proposed AC mains 220 V load over current cut off circuit continuously monitors the current flowing through a connected load. If this current increases beyond a certain preset level, […]
