Here’s 2 pictures which shows how to transfer electricity without using wires, one is the fully completed second sec exciter is guess what despite the last 2 series coil sections […]
Signal Injector Circuit
While troubleshooting amplifier and audio related equipment, a signal injector circuit becomes one of the most essential tools, here we learn how to make a signal injector circuit. Here is a two […]
Simple Transistor Tester Circuit
Simple transistor tester circuit is quite easy and low cost circuit, is just not built to calculate any transistor efficiency figures, however is designed to get fast testing to signify […]
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 […]