This simple circuit is used to detect variations in electromagnetic fields around us. It based on an instrumentation amplifier INA122 for Texas instrument. As sensing element, the detector is equipped with Inductor (100uH-1mH). The output is routed out to oscilloscope through a BNC connector. A 9v battery is used to power the circuit.
If you want to make your laptop/notebook sound louder, you can add simple Audio Amplifier like this project. Built based on IC LA 4440, the amplifier only need few passive components. This dual channel audio power amplifier has low distortion over a wide range of low to high frequencies with good channel separation. Its built-in […]
This small amplifier is built based on TDA2003 IC. It can deliver 4Wrms at 4ohms. The TDA 2003 has improved performance with the same pin configuration as the TDA 2002. TDA 2003 keep maintained additional features of TDA 2002 such as very low number of external components, ease of assembly, space and cost saving.
If you want to watch your own TV program and don’t want anyone disturb your watching time by changing the channel via remote control, try build this simple circuit TV remote control jammer. The circuit uses 555 IC timer to generate 38 kHz signal and IR transmitting Diode (IR emitter) to transmit the signal. When […]
This guide helps you to learn and understanding everything you need to know about the Raspberry Pi computer, its background, purpose, system specs, the software it runs and the amazing things it is capable of. FREE DOWNLOAD Unofficial Raspberry Pi Manual (limited)
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