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Tiny Audio Amplifier Using LM386 Specifications The Tiny Audio Amplifier kit is a good choice for battery operation. It is based on LM386 IC. Power supply - 6 - 12 VDC Output power - 1 W, 8 Ohm The quiescent power drain is only 24 mW when operating from 6 VDC Self-centering output quiescent voltage Onboard PRESET to adjust volume Terminal pins for connecting power supply, audio signal and speaker Power-On LED indicator ON/OFF PCB mounted slide switch for power supply Four mounting holes of 3.2 mm each PCB dimensions 44 mm x 44 mm Schematic Inputs - Outputs configuration    Parts List  PCB

Sub-woofer circuit for you take it to apply with your sound system or devices as the device is small and few electronic part. We provides completed PCB and component layout. Tiny Subwoofer Amplifier Circuit With UA741 Circuit Diagram We use the IC dual operational amplifiers TL072 in this circuit. This subwoofer project is a subwoofer or a speaker to drive low frequencies, rank of 20 Hz to 150 Hz electronic circuit diagram below shows in details of a circuit and parts of the main amplifier UA741 for 22 watt in 4 ohm of car subwoofer driver and you can turn on VR50K for adjusted frequently of mini subwoofer . The device is designed for an existing stereo amplifier, often requires adding another blow to the music of driving a subwoofer.   Mini Subwoofer Top PCB The amplifier uses BTL is a good and cheap ((Bridge Tied Load channels) 8-pin IC UA741 from Philips is now NXP Semiconductors, that may provide a small number of components and 22W at 4 ohm load voltage 12 volt car battery def...

This project is an open source (hardware & software) DDS generator, based on: smart TFT module, AD9834, LM7171 fast amplifier. Description The homemade function generator is a quite common project on the internet. We can find different ways to do it: - The quick & dirty way based on a DDS module bought on eBay - The analog version based on a MAX038 / XR2206 - The “clean” way based on a FPGA and a fast DAC (e.g. http://www.circuitben.net/node/14) - The software way (e.g. Arduino + R/2R DAC) From my side, I wanted a small one which could fits my needs without being too expensive. According to me, such generator should at least: - Be easy to use - Output a signal from 1Vpp to 10Vpp (+/-5V), from 0 to 1MHz - Have a low profile - Without electric hazard (shall work on a 12V DC) Tiny DDS - Open source DDS generator Project Schematic Choosing the DDS chip I first started to look for a cheap DDS chip on eBay; you have to be careful because most of DDS chips have only a sinusoidal outpu...

The 17 mm square MM7150 Motion Module from Microchip Technology is a complete, small form-factor board containing a 3-axis accelerometer, 6-axis digital compass and gyroscope sensors pre-programmed with integrated calibration and sensor fusion algorithms. Connections to the board include I2C, power and ground. The board operates at 3.3 V and consumes about 7.68 mA in active mode and around 70 µA in deep sleep. Features: Read position & motion data over I2C Small size 17×17 Pre-programmed and calibrated Single sided – can be soldered down SSC7150 motion coprocessor with integrated sensor fusion 9-axis Sensors (accelerometer, magnetometer, gyroscope) [ ]