A couple of simple boost converter circuts are explained in this post, whch can be build and applied by any hobbyists for their own specific requiremenet. What is a Boost Converter A boost converter circuit is a design intended for stepping-up or boosting a small input voltage levels to a desired higher output voltage level, Read More
Wireless Office Calling Bell Using Arduino
In this post we are going to construct wireless office calling bell which can be used for calling 6 different personnel from head’s / boss’s desk or some other calling bell type fun project for your home. By Girish Radhakrishnan Using nRF24L01 2.4 GHz module We will be constructing a simple wireless calling bell using Arduino Read More
TV Remote Control Tester Circuits
We all use remote control handsets for controlling various household devices such as TV, AC, Music systems, curtains etc, and sometimes we seem to have problems with these devices, or even a newly purchased remote controller unit occasionally seem to malfunction, and identifying the issue becomes quite difficult for us. This simple 2 transistor circuit Read More
Vehicle Speed Detector Circuit for Traffic Police
In this post we are going to construct a circuit which can measure the speed of any vehicle on roads and highways. The proposed circuit is kept stationary at a place where the vehicles are suspected to over-speed. If any vehicle goes beyond the speed limit, the circuit alerts immediately. We will be looking the Read More
PIR Sensor Datasheet, Pinout Specifications, Working
In this post we are going to explore the datasheet of PIR or Pyroelectric Infrared Radial Sensor HC-SR501. We will understand for what purpose PIR sensor is used? Its basic operation, its technical specifications and finally we will be looking at some real life applications. By Girish Radhakrishnan and Swagatam We will begin by understanding Read More
Arduino Full-Bridge (H-Bridge) Sinewave Inverter Circuit
A simple yet useful Microprocessor based Arduino full-bridge inverter circuit can be built by programming an Arduino board with SPWM and by integrating a few mosfets with in H-bridge topology, let’s learn the details below: In one of our earlier articles we comprehensively learned how to build a simple Arduino sine wave inverter, here we Read More
LM324 Quick Datasheet and Application Circuits
In this post we are going to take a look at the popular LM 324 IC. We will be looking at the pin configuration, its important features and its technical specifications and finally we will be looking at some of the fundamental application circuits using LM 324. By Girish Radhakrishnan If you are looking for Read More
Free Energy from Inverter
While experimenting with a 300V DC to 220V AC inverter circuit, I noticed a strange overunity phenomenon which appeared to be like the generation of free energy from the inverter transformer. Recently while experimenting with a high voltage converter circuit, I was quite astonished to see a strange overunity kind of occurrence wherein the inverter Read More
1500 watt PWM Sinewave Inverter Circuit
A vey basic yet reasonably efficient 1500 watt PWM based sinewwave inverter circuit can be studied under this post. The design utilizes very ordinary parts to accomplish a powerful SPWM type inverter circuit. Main Specifications Power Output: Adjustable from 500 watts to 1500 watts Output Voltage: 120V or 220V as per the transformer specs Output Read More