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 […]
Simple Multi-function Timer Circuit
This Multi-function timer circuit can be used to generate many different timing outputs at different desired ranges. A timer is practically unachievable without IC 555 or counter ICs along the […]
Exponential Waveform Generator Circuit
This exponential waveform generator circuit provides you with a waveform which sinks exponentially from a specific voltage to near-zero, after which quickly resets to reactivate the sequence. How it Works […]
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 […]