Showing posts with label in. Show all posts
Showing posts with label in. Show all posts
Tuesday, September 16, 2014
Guitar Circuit with built in speaker
The idea to make a guitar with a built-in speaker came when I stumbled upon a fact that if I miss a pulse through the speaker, it will be heard far away.
Recall manual siren. Human hand, twisting it develops 0.1 horsepower, this is where it is 100 watts (RMS), and heard it on the entire city.Flashlight compared with 1500 Watt PMPO 1000W RMS projector brightness turned this flashlight shines brighter and more, even though there was a light bulb 5 watts RMS. Similarly, energy saving light bulbs, written on them two 100 watts and 8 watts. But this retreat. Also on imported musical instrument in writing all power PMPO.
So, if the distortion of the sound spectrum converted to a pulse with a large buildup of small capacitors and alleviate sinus large capacitors, then turn out so when mixed. Promoduliruyutsya under sinusoidal pulses, acquiring the height of its envelope. Pulses will hear anything away, because of their large growth. But due to the fact that they will have different heights under sinus, they will be perceived by the human ear differently, carrying information about the full spectrum of sound.
This transformation into pulses and sine and mixing occurs on a chip amplifier effective D2 (the chip I can not seem to pick up for this part, so did its own microassembly until painted, because it developed). Coefficient PMPO this chip gives the coefficient 300. That is, when consumption of battery power amplifier crown 0.8 watts (RMS) guitar gives out 240 Watts PMPO volume.
Scheme guitar with built-in speaker:
It is known that it is necessary for restaurants 100 watts to 300 watts shift halls (power amplifier goes 1 Watt RMS) for concert 1000 watt (power amplifier here goes 3.3 watts RMS). Coefficient PMPO 300 guitar can do it.
This part of the effective amplifier with limiting diodes D2 purely mine. The first part of the effective amplifier, tone and preamp made by conventional schemes. Power Amplifier taken from Marshall amp already built up a guitar at a frequency of 50 to 13,500 Hz. Did not want to reinvent the wheel.
The third chip preamplifier (preamp), stands for alignment voltage DC tone, if it comes to it a little, as well as for the formation of overdrive. If humps AFC voices raised high, they begin to be limited, there is an increase in their growth, rather than amplitude. Intermediate frequencies are soft, not isolated and then there is no loss spectrum and volume control on the ear remains.
D2 tuned to the frequency 1700 - 2200 Hz and generates downs 100 to 3500-4500 Hz. Input from 2 to 5 millivolts it does not distort.
Frequency obstructions on different chains, plus a capacitor input impedance or resistance, etc. I want to calculate, but a book with formulas passed back to the Institute, it is necessary to take it again. While doing the ear, with observations from other circuits and devices.Infringement at low frequencies not, because it is necessary for the effects of sound from 100 Hz, body volume allows guitars to make them.
The sound of this scheme, because such characteristics can be confused with the sound of bands such as Disi Asay, Metallica, Gaunz Roses, Kiss, Bon Jovi. It all depends on the setting of D2, and can be customized to fit our music. It adjusts for distoshn, drive, metal, electrical, acoustic, mixed. Channels are made entirely only without amplifier and the first part of the amplifier efficiently. In the diagram this channel is highlighted with a blue border.
That makes guitars with a slightly shorter scale length with pegs on the other side, that would have been smaller sizes. I think the small size would blend well with a large capacity.
Wednesday, September 3, 2014
Is Bigger Better in Auto Sound Systems
When it comes to auto sound systems, one question seems to be repeated often-is bigger better? The honest answer to that is not by a long shot. There are many excellent quality sound systems that will not require the backseat and your first-born in order to enjoy wonderful quality of sound and music as you drive along on your daily commute. One thing that is important to remember is that dynamite does in fact come in small packages. The same can be true of a good quality sound system for your car, truck, or SUV.
You can elect to have the full range sound package. This package, if not custom installed by the dealer can take up a great deal of real estate within your car, truck, or SUV. If you own a compact car, these types of speakers and this particular type of sound system is definitely not recommended. The first reason it is unattractive is that it will most likely require either the vast majority of your trunk or take out your back seat. I for one like being able to cart around friends, relatives, and/or children-my back seat isnt up for grabs. I also prefer the continuity of a factory-installed system that takes up none of the premium living space within the interior of my SUV.
I am personally biased towards the wonderful sound quality of the Bose sound system and speakers. The quality of sound with this particular system is excellent and any true music lover will tell you that good quality of sound is better by far than a louder sound. This is not to say that the Bose sound system will be the perfect choice for everyone to use as his or her auto sound system only that it is my first choice as a music lover.
I prefer a softer sound that has good quality to a louder sound of the substandard or even average quality on any day. The problem with most big sound systems and speakers is that they often sound hollow or tinny rather than full and robust. A good auto sound system will provide the best possible sound within the confines of the least possible space. You will probably find that you dont need to sacrifice your backseat in order to hold the speakers and while the Bose sound system for automobiles does cost more than some sound systems, it wont require a second mortgage on your home in order to afford. There are actually times in life when you get what you pay for.
The important thing to remember is that you do not have to have the most expensive, the best known, or even the biggest sound system in order to have a wonderful quality sound system in your automobile. You will not even have to have a Bose sound system in order to have a sound system that is not only excellent quality but also excellent sound. You do not need to pay an arm and a leg or any other appendages in order to have a good sound on your daily commute to work.
Music is all around us, at work, at home, on television shows. Music sets moods, sets tones, and kills moods on occasion. It only makes sense that you have good quality equipment upon which to play the music that so greatly enhances and enriches your life. If you are in the market for an auto sound system it only makes sense to listen to several before deciding on the one that will work best with your musical tastes and your desire for your vehicle sound system. Dont be misled by commission minded sales associated that think you need the latest, greatest, and most expensive toy on the market. Find a system that sounds good to you and go with that system. You do not have to go for a better sound if you find a sound you like that should be enough.
Saturday, August 16, 2014
MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT IN DIAGNOSTICS FEATURES TDA7562
Features:
- DMOS POWER OUTPUT
- HIGH OUTPUT POWER CAPABILITY 4x25W/
- 4 @ 14.4V, 1KHZ, 10% THD, 4x35W EIAJ
- MAX. OUTPUT POWER 4x60W/2
- FULL I2C BUS DRIVING:
- ST-BY
- INDEPENDENT FRONT/REAR SOFT PLAY/MUTE
- SELECTABLE GAIN 30dB - 16dB (FOR
- LOW NOISE LINE OUTPUT FUNCTION)
- I2C BUS DIGITAL DIAGNOSTICS
- FULL FAULT PROTECTION
- DC OFFSET DETECTION
- FOUR INDEPENDENT SHORT CIRCUIT PROTECTION
- CLIPPING DETECTOR PIN WITH
- SELECTABLE THRESHOLD (2%/10%)
- ST-BY/MUTE PIN
- ESD PROTECTION
Circuit Diagram:
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| MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT-IN DIAGNOSTICS FEATURES |
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