20 Watt Fluorescent Tube Circuit with 12V Battery Operation

This simple 20 watt home tube light circuit will work with any 12V battery and uses very few components yet is able to produce a reasonable amount of white light. The components used are very common and can be easily procured from the local electronic retailer. The idea is simple, the secondary winding of Tr1 … Read more20 Watt Fluorescent Tube Circuit with 12V Battery Operation

10 Simple Automatic LED Emergency Light Circuits

The article describes a 10 simple automatic emergency light circuits using high bright LEDs. This circuit can be used during power failures and outdoors where any other source of power might be unavailable. The circuit uses LEDs instead of incandescent lamp, thus making the unit very power efficient and brighter with its light output. Moreover, … Read more10 Simple Automatic LED Emergency Light Circuits

AC 220V/120V Mains Surge Protector Circuits

Voltage spikes  can sometimes be a big nuisance as far as the safety of the various electronic appliances are concerned. Let’s learn how to make a simple AC Mains surge protector circuits at home. What is Voltage In Rush A sudden voltage spike is basically a sharp rise in the voltage lasting not more than … Read moreAC 220V/120V Mains Surge Protector Circuits

Simple Peltier Refrigerator Circuit

In this post we learn a straightforward procedure for building a simple refrigerator using Peltier device for generating the required cooling effect inside the fridge. How Peltier Device Works We are all familiar with a Peltier device and know how it functions. Basically it works on the principle of thermo-electric effect (opposite of Seebeck Effect) … Read moreSimple Peltier Refrigerator Circuit

Automatic Voltage Stabilizer Circuit for TV sets and Refrigerator

stabilizer relay transformer wiring diagram

Here we will study the design of a simple automatic mains AC voltage stabilizer which can be applied for safeguarding appliances like TV and refrigerators from fluctuating voltages. A voltage stabilizer is a device which is used to sense inappropriate voltage levels and correct them to produce a reasonably stable output at the output where the load … Read moreAutomatic Voltage Stabilizer Circuit for TV sets and Refrigerator

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