The light emission of an LED is usually fairly small. In case a lot more brightness is needed, the following LED amplifier circuit might help. The LED to be amplified’ […]
Simple 12V DC Fan Speed Controller Using IC 555
In this post we are going to construct a circuit to control the speed of 12V DC fan which is commercially available to run on 12V Solar panels and Batteries. […]
Non-Contact Voltage Detector Circuits Using Transistors and IC
In this post we are going to discuss a few non-contact voltage detector/tester circuits for checking the presence of active mains live wire. We will be understanding what non-contact voltage […]
Road Diversion Warning Indicator using Running LED Lights
The discussed LED lamp chaser circuit can be effectively used for indicating or warning road diversions or when a roadwork is in progress, especially in areas where street lamps are […]
High Voltage Emergency Mains Cut-OFF Circuit
In this post we learn how to make a simple high voltage emergency mains cut-off circuit for intentionally blowing a fuse during a catastrophic high voltage tendency, making sure that […]
Simple Dual Power Supply Circuit Without Center Tap
The article explains how to make a simple dual power supply circuit without using a center tap transformer rather any ordinary two wire transformer. This circuit is of interest not […]