200 LED Reverse Forward Light Chaser Circuit - for Diwali, Christmas Decorations

Oct 29, 2012

The following article explaining a 200 nos. LED forward reverse light chaser circuit was requested by Mr. Nagaraj. Let's learn more regarding how to implement the proposed high number LED light chaser circuit.

Making a Multi-function Water Level Controller Circuit

Oct 28, 2012

The following multi-function water level controller circuit post is based on the suggestions expressed by Mr.Usman. Let's learn more about the requested modifications and the circuit details.

Simplest AM Radio Circuit

Oct 27, 2012

The following circuit was taken from an old electronic book, it is indeed a very nice little two radio receiver which utilizes very few components yet is able to produce output over a loudspeaker and not just over headphones.

Making LED Illumination Circuit for Fish Aquariums

Oct 26, 2012

The discussed LED light circuit with timer was requested by Mr.Nikhil for illuminating his 4 x 2 feet fish aquarium. Let's learn more about the proposed circuit idea.

H-Bridge Modified Sine Wave Inverter Circuit

Oct 23, 2012

The discussed idea of a simple full bridge or half-bridge modified sine wave inverter was developed by me. The idea does not incorporate any complicated configurations yet very effectively implements all the necessary functions flawlessly.

Passive Infra Red (PIR) Sensor Pinouts, Datasheet Application Note Explained

Oct 22, 2012

The post discuses the pinout details of the standard passive infrared (PIR) sensor RE200B and also explains through a circuit diagram how to wire the PIR sensor to detect temperatures without making physical contact with the heat source.

Grid Interactive Solar Power Generation System Discussed

Oct 20, 2012

The grid interactive solar power generation design idea presented in this article was designed by me in response to the request made by Mr.Kurush. Let's learn the design stages with the help of the following explanations.

Installing Solar Universal Cell Phone Battery Charger Station in Villages

Oct 19, 2012

The following article which explains a 20 cell phone charger station using solar power was requested by Mr.Bertini. Let's learn more regarding the request and the proposed set up procedures.

1 watt LED Driver Using a Joule Thief Circuit

Oct 18, 2012

A joule thief circuit is pretty popular with all electronic hobbyists, because the concept allows us to operate even the white and the blue LEDs from a 1.5V source which normally require 3V to illuminate brightly. The present article discusses one such circuit, however here we replace the traditional 5mm LED with a 1 watt LED.

Make this Musical Greeting Card Circuit

Oct 16, 2012

The presented circuit of a musical greeting card circuit was requested by one of the keen readers of this blog, so I designed this interesting little circuit, which is simple and easily gets embedded inside any standard greeting card fold.

Designing a Grid-Tie Inverter Circuit

A grid tie inverter works quite like a conventional inverter, however the power output from such inverter is fed and tied with the AC mains from the utility grid supply. As long as the mains AC supply is present, the inverter contributes its power to the existing grid mains supply, and stops the process when the grid supply fails.

Solar Panel/AC Mains, Relay Changeover Circuit

Oct 15, 2012

The discussed automatic change over relay circuit was requested by Mr.Karimulla Baig. The circuit normally charges the connected battery at constant current through the power received from the solar panel, and reverts to DC power from an AC/DC adapter in the absence of solar energy (during night time). Let's the read the request in more details:

Homemade Solar MPPT Circuit - Poor Man's Maximum Power Point Tracker Circuit

Oct 13, 2012

MPPT stands for maximum power point tracker, which is an electronic system designed for optimizing the varying power output from a solar panel module such that the connected battery exploits the maximum available power from the solar panel.

3 Step Automatic Battery Charger/Controller Circuit

Oct 11, 2012

Generally it is noticed that while charging batteries people hardly pay any special attention toward the procedures. For them charging a battery is simply connecting any DC supply with matching voltage with the battery terminals.

High Voltage, High Current DC Regulator Circuit Using IC 741

Oct 10, 2012

We all are pretty familiar with the 78XX voltage regulator ICs or the adjustable types such as LM317, LM338 etc. Though these regulators are outstanding with their specified functioning and reliability, these regulators have one big disadvantage.... they won't control anything above 35V. The circuit presented in the following article introduces a DC regulator design which effectively counters the above issue and is able handle voltages as high as 100V.

Automatic 40 Watt LED Solar Street Light Circuit Project - Part-2

Oct 2, 2012

In the previous article we discussed the charger controller, the battery high/Low controller and the light sensor sections of the proposed 40 watt automatic solar street light system circuit. This page will show you the making procedure of the PWM controlled LED module circuit.

Automatic 40 Watt LED Solar Street Light Circuit Project - Part-1

Today solar panels and PV cells have become very popular and in the near future we would possibly see everyone of us using it in some or the other way in our life. One important use of these devices has been in the field of street lighting. The following article discusses one such interesting circuit which comprehensively explains the making of a 40 watt fully automatic solar street light system circuit (exclusively designed by me).

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