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Here is the circuit of a guitar preamplifier that would accept any standard guitar pickup. It is also versatile in that it has two...

Electronic devices consume some power even in the standby mode, i.e., when they have been switched off using a remote handset but not the...

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...

Here is an inexpensive circuit for a stereo amplifier to drive a low-impedance headphone set. The circuit uses a few cheap transistors (BC547 and...

This handy, pocket-size mobile transmission detector (Mobile Bug) can sense the presence of an activated mobile phone from a distance of one and a-half...

This unidentified flying object (UFO) is nothing but an electronic toy depicting the fantacy. It comprises three separate sections, viz, rim flasher, dome flasher...

Here is a mains-operated door-bell that produces parrot-like sweet voice without requiring any musical IC. The circuit is cheap and easy to construct. The...

This over/under voltage cut-out will save your costly electrical and electronic appliances from the adverse effects of very high and very low mains voltages. The...

An ordinary automatic room power control circuit has only one light sensor. So when a person enters,the room it gets one pulse and the...