Showing posts with label the. Show all posts
Showing posts with label the. Show all posts

Wednesday, November 5, 2014

Programming The Propeller IC

Parallax, well known for its successful Basic Stamp IC, has recently introduced the Propeller: a new microcontroller with a certain difference. It packs no less than eight 32-bit processors (referred to as COGs in Propeller jargon) into a single package with only 40 pins. That design takes genuine simultaneous multiprocessing possible, and the sophisticated internal structure of the device makes it relatively easy to implement video and signal-processing applications. The Propeller can be programmed in assembly language or the high-level Spin language. The processor and the programming tools were developed entirely in-house by Parallax, with the hardware being designed from scratch starting at the transistor level.

Circuit diagram:
programming-the-propeller-ic-circuit-diagramw
Programming The Propeller IC Circuit Diagram

The basic idea behind that was to avoid becoming involved in all sorts of patent disputes with other manufacturers. The result is astounding, and for software developers it certainly requires a change in mental gears. As is customary with modern microprocessors, the Propeller has a simple serial programming interface. The developer’s toolkit from Parallax has a modern USB port for that purpose, but a reasonably simple alternative (illustrated here) is also possible for anyone who prefers to work with the familiar RS232 port. Don’t forget that the Propeller works with a 3.3-V supply voltage.
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Monday, April 8, 2013

Speakers Play the Sound but Auto Sound Systems Make It

When you look at auto sound systems it is important to pay close attention to the speakers on the system you are considering. You will find that there are all kinds of components, pieces, and parts that go along with a proper sound system in the world of todays music systems. You need to pay special attention to every single detail along the way of choosing the system that will meet your needs, your budget, and your lifestyle with the most bells and whistles to spare.


Some things that are important to remember about selecting proper speakers is that bigger isnt always better. As a matter of fact, bigger speakers are often quite inferior no matter how that might have been different in the past. As technology improves, better things are coming in much smaller packages. You do not have to have a huge set of amplifiers in order to receive not only good quality but also really big sound.

I hope I can honestly say that the days of having to remove the backseat of your car in order to install speakers is long gone. I also hope that the days of having speakers occupy more than half of the available trunk space in a car are also long gone. While I am not a big fan of loud thumping bass music, I do realize that it is very popular and has been for the last twenty or so years. The good news for fans of this type of sound is that you dont have to have all the extraneous space taking equipment that was once required in order to achieve a far superior sound in the auto sound systems of today.


You can still achieve the very same bone jarring bass thumping music without sacrificing every inch of real estate within your car to speakers and amplifiers. Good speakers can be purchased separately from your auto sound system though I highly recommend against doing so. I am ordinarily all about saving money whenever and wherever possible. The truth is that with a sound system for your vehicle if you dont hear all the components together you really wont have a realistic clue as to the overall sound you will be buying. Your best bet is to buy the speakers that are sold as part of the sound system rather than hoping you will be getting a good deal on speakers that are not quite up to the standards of the sound system you have invested in for your car, truck, or SUV.



Of course the best speakers for your car will largely depend on what you plan to do with the speakers. There are some who plan to enter their cars into competitions to see which car has the best thumping bass sound around. If that is your goal for your auto sound system, then by all means add all the speakers you need. Keep in mind that the less space you have inside your car, the less people you fit inside. This can be a somewhat disheartening thing on occasion but it is your car and your sound after all. You should get what you want for your money. You are, after all the one paying for the sound you are getting.


Speakers arent the most important component when it comes to big sound but they are vitally important when it comes to sound in general. Just remember it makes no sense to go big and bulky on the speakers and amplifiers if you are going to skimp when it comes to the overall quality of the sound system you are buying for your vehicle or skimping on installation. The best equipment on the market is only as good as its weakest part. It doesnt matter how wonderful your speakers are if your system is substandard or even only average. Try to keep even quality throughout your auto sound system whenever possible for the best possible overall sound.

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Saturday, April 6, 2013

Understanding the workings of Vertical Deflection

Vertical deflection parts, serves to provide a sawtooth current to the vertical deflection coil so that horizontal lines are generated by applying localized horizontal deflection from the top of the screen and moves towards the bottom of the screen. Sweeping PAL system has a vertical frequency of 50 Hz and 60 Hz NTSC system. Vertical deflection circuit there are several variation, is in contrast to the horizontal deflection circuit on television almost all the same.
Broadly , the vertical deflection section comprises:
Yoke DEfleksi
Yoke Deflection
  • Vertical oscillator (vertical countdown)
  • Ramp generator
  • Vertical amplifier drive
  • Vertical amplifier-out
  • Pum-up (flyback generator)
  • Feedback circuit
  • Vertical deflection coil

Countdown vertical as the vertical oscillator. Vertical count-down got input from the horizontal frequency count-down and divide in order to obtain the vertical frequency.
In this section there is a circuit called a "vertical window-counter" which serves to automatically adjust the vertical size of the frequency. Without any input video signal, vertical oscillator oscillates at a frequency of approximately 45 to 55Hz free. If then the aircraft received the system PAL video signals, vertical-counter window will lock the vertical oscillator at a frequency of 50Hz. And if a video signal NTSC system will automatically lock the vertical frequency to 60Hz

If for any damage, so the frequency can not be locked, it will cause:
  • Picture rolling up if the frequency is lower
  • Rolling down the picture if the frequency is higher.

Ramp-generator - vertical pulses from the oscillator is a square, ramp-function generator to change the shape of the signal box into a sawtooth shape. Sawtooth signal shape is determined by the value of resistor-capacitor filter contained in this section.

Vertical count-down circuit and the ramp-generator circuit is in common IC. But there are certain circuits where the ramp generator IC is in the vertical-out, ie aircraft using the TA8690 and TA8445.


Vertical amplifier Drive - serves to amplify the signal before it is fed into the vertical vertical-output amplifier. Circuits generally be one with a vertical power amplifier out.


Vertical power-amplifier Out - vertical sawtooth signal is amplified by this section to be able to supply power to the coil current sawtooth vertical deflection. The working principle of the vertical amplifier-out does not vary much with the audio power-amplifier


Pump Up (flyback generator) - applying localized electron beam vertically from the top to the bottom of the screen. To conduct further re-sweeping the electron beam must be returned with a quick way into the top layer. To do this required a strong pulse but only a moment the so-called vertical-retrace pulse, which pulse is required to establish a higher voltage supply on the vertical-out amplifier.

While doing the sweeping-vertical from the top of the screen to the bottom of the screen vertically-out circuit generally requires a voltage supply of about 25V. And at the vertical-retrace or back from the bottom to the top of the screen quickly takes a larger supply voltage of about 50V. Vertical pump-up circuit is in the vertical IC-out and serves to generate a high voltage at the moment-vertical retrace and require external components consisting of a diode and an Elko.

Vertical-drive circuit, pump-up and reinforcing vertical-out is generally a single IC package in the vertical-out.

There are several types of vertical IC-outs that do not use a pump-up circuit. Instead of the vertical-out requires two kinds of supply Vcc, the supply of low voltage and high voltage supply.

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Fuse Box Chevy Suburban Under The Hood 2002 Diagram

Fuse Box Chevy Suburban Under The Hood 2002 Diagram - Here are new post for Fuse Box Chevy Suburban Under The Hood 2002 Diagram.

Fuse Box Chevy Suburban Under The Hood 2002 Diagram



Fuse Box Chevy Suburban Under The Hood 2002 Diagram
Fuse Box Chevy Suburban Under The Hood 2002 Diagram

Fuse Panel Layout Diagram Parts: engine warning harness junction block bracket, inflatable restraint harness, radiator support, inflatable restraint electrical connector, battery tray, engine warning harness, junction block.
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