pump it up mp3 booster


Posted on Feb 5, 2014

MP3 players are all the rage these days. The smaller ones in memory-stick format are particularly easy to take with you; your very own personal sound system` on the move! It`s when you want others to share your taste in music that you ¬nd these players to have a lack of power. You can get round this problem with the help of the MP3 booster, a small amplifier that c


pump it up mp3 booster
Click here to download the full size of the above Circuit.

an be used to connect your MP3 player directly to your Hi-Fi. When you next invite your friends to a party you can ask them to bring their personal music` as well as the usual drinks! But ¬rst we have to build this booster! The small battery-powered players have an output signal that is more than suf ¬cient to drive a set of 32 Ohm headphones. You`ll often ¬nd that with an output of 1mW the sound pressure level (SPL) produced can reach up to 90 dB. This would be suf ¬cient to cause permanent damage to your hearing after only one hour! The maximum output voltage will then be around 200mV. This, however, is insuf ¬cient to fully drive a power amplifier. For this you`ll need an extra circuit that boosts the output voltage. Power amps usually require 1 V for maximum output, hence the signal has to be ampli ¬ed by a factor of ¬ve. We will also have to bear in mind that quieter recordings may need to be ampli ¬ed even more. We`ve used a simple method here to select the gain, which avoids the use of potentiometers. After all, the MP3 player already has its own volume control. We decided to have two gain settings on the booster, one of three times and the other ten times. Ampli ¬ers IC1A and IC1B (for the right and left channels) are housed in a single package, a TS922IN. The output signal of the MP3 player is fed via a stereo cable and socket K1 to the inputs of the amplifiers. The gain depends on the relationship between...




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

12V to 9 or 6 v converter
28 LED Clock Timer
Oscillator Design Guide Structure
help diagnose stator
Water Tank Controller Circuit PCB
Commander
Infrared Remote Control Tester
Audio Oscillators
Backup Lamp
Coupler Crystal Radio
5-channel low-power programmable sensor signal processor with AD7714 circuit
8-bit bus control widely used 12-bit DA converter Universal
Dual AC radio remote control switch circuit diagram
Remote schematic CSJ-T300B with CSJ-R02B composition
Geiger–Müller meter circuit project



Top