Mains 20 Watt Electronic Ballast Circuit

Apr 30, 2014

The post explains a simple 20 watt fluorescent ballast circuit using a single chip FAN7711 from Fairchild semiconductor.

Simplest Grid-tie Inverter (GTI) Circuit Using SCR

Grid-tie inverter concepts may appear to be complex due to the many criticalities involved with them, however with some intelligent thinking it could be actually implemented using primitive technologies. One of the ideas has been explored here.

Dimmable Ballast Circuit

Apr 28, 2014

The post explains a simple 25 to 36 watt ballast circuit which can used for all fluorescent tube applications within the allocated range.

Smart Car DRL Controller Circuit

Apr 26, 2014

The post explains how the DRLs in a car may be controlled by reducing its intensity while the headlamps or the indicator lamps are being used, for enhancing its efficiency. The idea was requested by Mr. Rob. Let's learn more about this smart DRL intensity manager circuit.

Infrared Staircase Lamp Controller circuit

The article relates a simple automatic infrared controlled staircase lamp circuit which switches ON only during the presence of a passer-by and switches OFF automatically after a predetermined delay once the occupant vacates the corridor . The idea was requested by Mr. Sriram.

Darkness Activated Car Head Lamp and DRL Circuit

Apr 25, 2014

The post explains a simple automatic darkness activated switch for car head lamps and the DRLs, initiated by the ignition triggers. The circuit helps to save battery power and prevents unnecessary wastage of energy. The idea was requested by Mr. Vladnemir.

Float Switch Water Level Controller Circuit

The post narrates a simple water level controller circuit using a float switch mechanism. The idea was requested by Mr. tpraveenraj.

Ozone Water/Air Sterilizer Circuit

Apr 21, 2014

We are all familiar with thundering and lightning during stormy weathers and know how the effect is responsible of producing a lot of ozone and negative ions in the atmosphere. The same concept has been employed in the proposed water and air sterilizer circuit.

48V Solar Battery Charger Circuit with High/Low Cut-off

Apr 17, 2014

The post discusses a 48V solar battery charger circuit with high, low cut-off feature. The thresholds are adjustable through individual presets. The idea was requested by Mr. Deepak.

Non-Contact Current Sensor Circuit Using Hall-Effect IC

Apr 16, 2014

When it comes to sensing current (Amps) linear Hall-effect devices are the best and the most accurate. These devices can sense and measure current right from a few amps to many thousands. Moreover it allows the measurements to be done externally without necessitating a physical contact with the conductor.

High Voltage Transistor MJ11021(PNP) MJ11022 (NPN) Datasheet - Complimentary Pair

Apr 15, 2014

MJ11021(PNP) MJ11022 (NPN) are high voltage complimentary pair Darlington transistors suitable for all applications that involve high voltage high current such as in motor control, inverters, etc.

Li-ion Emergency Light Circuit with Over charge and Low Battery Cut off Features

Apr 8, 2014

The post presents a simple Li-ion emergency light circuit with over charge and low battery cut off features. The Circuit was requested by Mr. Saeed Abu and Y0f4N.

Simplest 100 Watt LED Bulb Circuit

Apr 2, 2014

The article discusses a very simple 100 watt LED bulb circuit using a few high voltage capacitors. The entire circuit could be built at a cost less than $25.

Simple Satellite Signal Strength Meter Circuit for Aligning Dish Antennas

Apr 1, 2014

Here we learn how to make a simple inexpensive satellite signal strength meter which can be used for aligning dish antennas with local satellites in order to achieve the correct positioning and maximum signal strength from the antenna. 

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