Power Supply for Hi-Fi Audio Amplifier – Symmetrical Output Including +/-15V DC Output

The power supply has been designed to use for audio power amplifiers. This power supply uses a transformer, a bridge rectifier, various rail capacitors, fuse for protection, also supply has separate dual regulators for +/-15 V DC output.  Maximum output for main audio amplifier +/-42V DC, high voltage output possible by altering bus capacitor voltage. The power supply also provides

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MINI MICROPHONE PRE-AMPLIFIER USING LM358

This is easy to construct microphone pre-amplifier project using compact electret condenser microphone. The pre-amplifier is important building block of many audio communication systems. Circuit has been built around Op-Amp LM358.    Power supply : 5 to 12 VDC @ 10 mA  Output: Gain Approx. 100  On-Board electret condenser microphone   Header connector for connecting of power supply input and audio

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4 Channels Optically Isolated I/O Board Using 6N137 Optocoupler

4 Channel Opto isolated board has been designed around 6N137 Opto-coupler, the 6N137 optocoupler is designed for use in high-speed digital interfacing applications that require high-voltage isolation between the input and output. Applications include line receivers, microprocessors or computer interface, digital programming of floating power supplies, motors, and other control systems. The 6N137 high-speed optocoupler consists of a GaAsP light-emitting

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40Pin/28Pin dS PIC Development/Evaluation Board

The ds PIC Development Board is a development and evaluation tool that helps create embedded applications using dsPIC30F Digital Signal Controllers for motor control family. Sockets are provided for 28 and 40-pin devices in the motor control family. The dsPIC Development has been designed mainly for Motor dsPIC30F4011 Digital Signal Controller in the 40-pin motor control socket and dsPIC30F4012 28

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Tiny Metronome Using 555 Timer and Buzzer

A metronome is a device that produces an audible click  sound at a regular interval that can be set by the Trimmer Potentiometer , typically in beats per minute (BPM). Musicians use the device to practice playing to a regular pulse. Musicians practice with metronomes to improve their timing, especially the ability to stick to a tempo. Metronome practice helps

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3 Wheel Power-ful Robot For Defense and Industrial Application

3 Wheel Power-ful Robot For Defense and Industrial Application Robot contains very powerful worm gear and dc brushed motors, each motor provides 150W , gear reduction 1:19, robot can be controlled using RC Futaba Remote Controller, motors works with 24V lead acid batteries, robot has many optional functions, Camera, LED High-Intensity Lights, charging facility, GPS controlled, ideal for defense and

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