Data acquisition systems have evolved to provide more accurate, fast and repetitive data. With these, you can acquire any signal from anywhere and produce...

This sunlight-controlled lamp uses a light-dependent resistor (LDR) as the sunlight sensor and a total of 25 high-brightness white LEDs. Separate resistors are connected...

Using the switch-mode power supply (SMPS) of your personal computer, this add-on circuit lets you switch between three hard disk drives (HDDs) and also...

In electric-heating mosquito repellents, an electric vaporiser heats up a mat or liquid to release non-degrading chemicals into the air and keep the mosquitoes...

This circuit lets you switch off and switch on a single-phase appliance using two separate push switches. Such an arrangement is common for industrial...

Based on orthogonal frequency-division multiple-access (OFDMA) and multiple-input multiple-output (MIMO) technologies, WiMAX systems require specialised test equipment from design to deployment stage SHWETA DHADIWAL BAID Worldwide...

Engineers are created in labs. Hence it is essential to keep the lab equipment current and close to the real world to create engineers...

One way to check whether anybody is at home is to ring the doorbell. Burglars too use this very technique. The circuit described here...

Here is a simple circuit that can produce the effect of candle light in a normal electric bulb. A candle light, as we all...

Today telephone has become an integral part of our lives. It is the most widely used communication device in the world. Owing to its...