This magnetic proximity switch circuit can be used to switch a load ON/OFF when a magnetic field is detected. How the Circuit Functions The Magnetic Proximity Switch Circuit is based […]
Light Activated Switch Circuit
This light activated switch circuit, automatically switches ON a connected lamp when night falls, and switches it OFF during day break. It has many applications, it could be used as […]
PIR Motion Sensor Circuit
This PIR motion sensor circuit detects a human presence and can be used to sound an alarm when a human is detected within its range. This is my smallest, cheapest, […]
LM317 Dispaly Intensity Controller Circuit
The following post explains how the IC LM317 can be used for automatically controlling 7 segment LED display intensity with respect to the variations in the ambient light conditions, detected […]
Automatic Day/Night Switch Circuit using Bi-Metal Strip and LDR
The following explained automatic day night switch circuit using a Bi-Metal strip and an LDR is able to automatically illuminate your porch light or power up some other equipment once […]
Gas Sensor Circuit
This gas sensor circuit is going to identify just about all pollutants available as gaseous material when it is more than a specific predetermined limits. Just to illustrate the suggested […]