A trailer for the classic 1980's transformers feature length cartoon cut to the audio for the 300 trailer
Cleaning Vicks Humidifier Best Low Cost 150cc Atv Joggers Strollers Free Shipping
Sunday, December 25, 2011
Monday, December 19, 2011
Eliminating that Terrible Hum From Your Home Theater Speakers
You've all heard it, that dreaded 60Hz hum through the speakers of a home theater or house audio system. Hopefully you heard it at a friend's house and not your own. It can drive you completely nuts. You may have even tried, unsuccessfully, to fix the little noise problem. That can make you even more crazy. What causes that horrendous noise through your speakers?
More often than not humming through your speakers is caused by a grounding problem. There are three main ground problems that cause problems in an audio / video system. These are ground loops, improper grounding and lack of a ground altogether. The other possible culprits that can cause noise are bad cables, a faulty piece of equipment or electrical noise from a lighting dimmer or electric motor. There are steps you can take to troubleshoot the noise and eliminate it from you theater.
The first step is find out where it is coming from. Disconnect your source and display equipment from your receiver or surround sound processor. If the noise stops, connect them back to the receiver or processor on at a time until the noise returns. When the hum comes back, you found where the noise is entering your system. Note that if you are connecting remote equipment, such as running the signal from your theater room DVD player to the TV in the bedroom, your chances to pick up noise increase dramatically. With such long runs, noise can be induced into the long cable runs from adjacent electrical wiring. It is also easy to create a ground loop, because the equipment is plugged into two different, widely separated outlets, on different electrical circuits.
If the noise is caused by a cable box, the noise is likely caused by the cable TV ground. To test this theory, disconnect the incoming cable TV feed to the rear of the cable box or TV while they are still connected to the rest of the system. If the noise is eliminated by disconnecting the TV cable, the problem is the cable TV ground. You can electrically decouple the cable TV feed from your system with a ground breaking transformer. These are available from many sources. Be advised that many newer, digital cable TV systems require any device in the signal chain to pass a full 1,000 Mhz. Some of the older ground break transformers will not do this. Be sure to check the specifications of whatever device you are purchasing to verify it will pass the digital cable TV signal.
If the noise is from your projector, TV, or monitor, it is most likely caused because the video display device is plugged into a different outlet than the other a/v equipment. It could be on a different circuit as well. These circuits may have two different ground potentials. That is, the resistance to ground is different on each circuit. A difference in resistance to ground from one ground point to another can cause the dreaded ground loop. If you get a ground loop, current flows between the two components. If the current flows through the components internal audio signal ground, you will get a hum.
You can use an isolation transformer, similar to the type used for cable TV ground problems, to eliminate the electrical connection from one component to the other. These transformers are inserted in line with the audio signal connection between the two components. If there is no audio connection between the components, the problem may be current flowing through the video portion. In this case, a video isolation transformer should be used to eliminate the ground loop.
Sometimes power conditioners will stop noise problems by placing equipment on different, electrically isolated outlets. This is done using isolation transformers. Sometimes this is ineffective however, due to the differences in internal construction of different power conditioning equipment. Some safety regulations, such as UL 1950, specify that an isolation transformer is only allowed to isolate the hot and neutral wires; the grounding wire must be passed straight through. If this is the case, the ground loop problem may still exist because many communication circuits are connected to the grounding conductor and not the neutral. In this case, the isolation transformer, or any power conditioner or UPS with an isolation transformer will have absolutely no affect on the grounding problem.
The noise may be generated externally, from a dimmer or refrigerator compressor for example, and coming in through the main power input on the audio video equipment. In this case, a high quality power conditioner may be effective in reducing or eliminating the noise problem. You may also find that one of the signal interconnecting cables in your system is faulty. This can also cause noise problems. Check for this by swapping the cables with one that you know to be good.
You can solve most noise problems in your home theater or multi room audio/video system by taking the systematic, step-by-step approach. Work your way up the signal chain, eliminating each piece of equipment as you go. If you have nothing connected to your speakers except the speaker wiring, and they still hum, the problem is noise induced into the speaker wiring from adjacent power cables. Other than that case, most problems are caused by ground problems, which you can find, and solve, if you take it one step at a time.
Wednesday, December 14, 2011
Arcee Has A "Moment" (Transformers Prime)
WARNING! OFFENSIVE LANGUAGE AHEAD! It's a heads up, since I'm putting R-Rated material in a show for older kids. Anyway, I just watched the episode "Partners" and I got really scared that Arcee (my favorite Autobot on the show) was going to bite it. Fortunately, she struck back with a vengeance. After the episode, I thought it would be hilarious to combine that moment with audio from....well....you'll see. Thanks to likeabumbler for having this footage.COPYRIGHT ACT ALLOWS THIS MATERIAL : "Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.
Low Cost Technics M5g Green Mountain Coffee Stock Save You Money!
Wednesday, December 7, 2011
Electronic Components
Electronic components form parts of electronic circuitry, and are used or manufactured in the field of electronics, which is the study of electrical devices used for controlling electrically charged particles or the flow of electrons to execute any electrical operation. Some of the most common electronic components are as follows:
Resistor: A resistor resists electric current, and the resistance is measured in ohms. Colors on the body of the resistor are a code for the value. Different colors represent the numbers from 0 to 9. In a variable resistor, resistance can be varied by moving a knob or slider. A variable resistor is used to control volume in many devices.
Capacitor: This is measured in farads. A capacitor is used for storing electrical charges that can be released upon demand. Capacitors can be of different types - electrolyte and ceramic disc are two of them.
Diode: A semiconductor device, diodes allow current to flow in one direction only.
Small, cheap and lasting, light emitting diodes (LEDs) are special diodes that give out light and allow current to flow in one direction.
NPN bipolar transistor: Used for current control, they can amplify currents with a small amount of heat dissipation and very little spatial waste.
PNP bipolar transistor: Its functions are the same as NPN, but construction is slightly
different.
Crystal: When a voltage is applied, crystals can accurately vibrate a specific frequency.
Integrated circuit: Having circuits etched into it, an integrated circuit is a semiconductor wafer that can hold capacitors, resistors, transistors, etc. in a large quantity. By allowing the chips to have millions of transistors, integrated circuits are capable of saving space.
Triac: A dual silicon controlled rectifier (SCR), triac is used to control alternating current (AC). Mostly used in dimmers and touch lamps, it controls the amount of electricity reaching an appliance.
Tapped secondary transformer: Used for transforming voltages, a plug-in transformer, the wall type, changes 120 volts AC into about 12 volts DC for small appliance needs. In a tapped secondary transformer, the secondary winding of the transformer is connected to a wire so that it can be used for multiple voltages, or more current.
Speaker: A speaker converts electrical energy into sound energy.
Evenflo Triumph Lx Convertible Car Seat Quickly Good Speakers Dell Computer
Saturday, December 3, 2011
Considerations For Your First DIY Guitar Tube Amplifier
If you have decided to take the plunge and build your own guitar tube amp, please let me share my early projects/mistakes with you to help get you going in the right direction. But first, be sure you really want to build your own:
You should be fairly handy around electronics already, and aware of the dangers inherent in high voltage tube electronics and the precautions to take when working on tube amps
You shouldn't have the expectation that you will save money... unless your time is worth nothing at all you can probably do better purchasing a completed amplifier, even from the kit vendors, but certainly on the open market as used
All said, though, there is a lot of satisfaction in completing and playing an amplifier you built yourself and having the license to further modify/tweak/voice your creation to perfection... so let's get started:
Stumbling Through My first Few Projects
My first project started as an AM radio, it had occured to me that this chassis and most of the components was quite suitable for an octal-tube-based Fender Champ-like single-ended amplifier and I wanted to hear the difference in tone between real tubes and the tube modeling in my Roland Cube amp... After studying some good tube amp books (see resources) I settled upon a plan and:
I fought with the old transformers (insulation turning to dust when you flexed the leads), used tube-sockets, noisy potentiometers and poor physical layout (working with the old radio chassis didn't provide optimum placement of the major components for a tube guitar amplifier)
Found out that true point-to-point wiring isn't the best choice for experimenting
I couldn't find a non-microphonic old-stock pentode tube
The tone sucked... with hindsight I believe it was due to the underwhelming, un-branded, tiny output transformer, but I'll probably never go back to check
Bottom-line, I learned a lot but it didn't answer my fundamental questions about tube-tone because I didn't end up with an iconic amplifier as a reference at the end of the project
I spent some frustrating evenings redesigning and reworking my first effort and then for my second major project I broke down and bought a kit that promised a clone of a vintage Champ amplifier. Major findings included:
Saving a few pennies here and there on components isn't satisfying when you end up investing a lot of time building the project and aspects of the end result look cheap (e.g. a plastic replacement for a 'proper' metal construction jeweled pilot light) or worse... sacrifice tone (e.g. cheap electrolytic capacitors)
I've grown a bit leary of un-branded chinese transformers that may not have even been hi-pot tested let alone certified by a safety agency; and who knows what laminations, etc. are used in the audio transformer?
Tiny chassis and cabinets aren't the best choice for adding additional functionality to the stock circuit and very frustrating to work with
8″ speakers and small cabinets suck tone... this amplifier sounds great when you plug it into a proper speaker & cabinet combination
Your First DIY Guitar Tube Amp Project
With the above experiences in mind it is time to summarize some considerations for the first project:
Simple project but not under-featured... something that will be satisfying and playable
Physically large for easy access, simplified assembly and room to modify
Well documented, well supported... not necessarily with user's manuals and step-by-step construction guides, but rather by a community with active forums, or extensive web documentation, etc.
A complete kit of parts, no difficult sourcing of components
Good quality parts with the potential to upgrade them if desired... but moderation rules... you may want good value over extravagant components to minimize your downside if your project doesn't come out well or you lose interest.
Standard sized chassis for easy sourcing of cabinets, or cabinets available from the kit supplier, or a desire, determination and ability to build (and finish) your own cabinetry
With the above given due consideration my third time was the charm!
I recommend you search out a reputable supplier of tube-amp kits, and pick a model that suits both your taste in tone and a satisfying set of features for your first DIY Guitar Tube Amp!
Centrifugal Blower Fans Best Quality City Mini Baby Jogger Double Coupon
Kinds Of Transformer For Power Generation
Sale of transformers to the people is in more numbers and they are sold for reasonable and competitive prices. Transformers fetch more demand among the business people and general customers around the world. Transformers are available in different kinds and they are the only instrument which is used to measure or to transfer current or energy from one circuit to another. Transformers are kind of electrical instrument used to transfer energy from source to another without any hindrance. Transformers are available in more number and at the same time they are available in different kinds.
Some of the kinds of transformers are current transformer, isolation transformer, power transformer, electric transformer, audio transformer, flyback transformer, high voltage transformer, low voltage transformer, step down transformer. Transformers are sold for reasonable and affordable prices to enable the customers to pay off the price consideration. The different kinds of transformers satisfy the requirement of the customers and meet their demand at the time of requirement. Some of the kinds of transformers are displayed below.
Electric Transformer
Electric transformer is inclusive of different kinds of transformers manufactured. Electric transformer is used to transfer current from one circuit to another with the help of electromagnetic induction. Electric transformer is provides current effectively and efficiently. Electric transformers are sold for reasonable prices to enable people to purchase it.
Current Transformer
Current transformer is also the other kind of transformer which is used to obtain current. The main purpose of using current transformer is to obtain current from the secondary circuit and also it measures the alternate current with the help of the conductor. Current transformers transfer current without influence over other process and supplies current directly.
Isolation Transformer
Isolation transformer is a kind of transformers used to supply current for equipments. Isolation transformer helps to decouple two circuits and supplies current from one circuit to another circuit. Isolation transformer suits for wide applications and helps to prevent influence one section to another. Isolation transformers are designed specifically to meet the requirements of the customers around the world.
High Voltage Transformer
High voltage comes under the different kinds of transformers manufactured. High voltage transformers are used for more number of applications and they come up with standard features. High voltage transformer can be used in power transmission applications. High voltage transformers transfer the energy directly from one circuit to another circuit with fine voltages. They transfer the energy from one circuit to another and supplies sufficient voltage to the customer.
Wholesale Metal Roofs Snow Wholesale Invisible Fence Transmitter
Tuesday, November 29, 2011
Trafomatic Audio Elegance
Trafomatic Audio Experience ELEGANCE Experience Elegance is the most powerful amplifier in the Experience series. It is constructed as push-pull using well known 6550 output tubes. Output power is 40W per channel, which is sufficient for most speakers, even those with lower than average sensitivity. This is a power amplifier, requiring preamplifier and opening endless possibilities for system configuration. Based on previous work on negative feedback, -6dB reaction has been tuned to provide sound equivalent to a good Single Ended application. Cathode feedback was used as the most musical one. Bass is well controlled, dynamic response is excellent and this amplifier belongs to the very top of its class. Same as all previous models, well designed power supply utilizes 300VA toroidal transformer, CLC filter and Rubycon electrolytics. Output transformers are based on a Double-C core configuration and Mundorf film capacitors are used throughout. Adding well thought-out concept to the mix results in a recognizable high quality sound of our amplifiers. Retro styling of Trafomatic Audio amplifiers has been extended to this model as well, which makes a perfect sonic and visual fit with Experience Line One preamplifier. An excellent starting point for full immersion in good sound. See and hear for yourself. Specifications: Output power: 2x40W Class of operation: Push-Pull (class A) Tubes complement:4x 6550 JJ , 4x ECC82 Inputs: Aux Outputs: 4 i 8 oma Input sensitivity: 2Vrms THD ...
Battery Recharger Buy Now Backyard Composter Free Shipping Canon Mp460 Buy Online
Saturday, November 26, 2011
New Gefen VGA Audio Extender/Console Sender Unit & Receiver Unit 5V DC Transformer 6ft Audio Cable
!±8± New Gefen VGA Audio Extender/Console Sender Unit & Receiver Unit 5V DC Transformer 6ft Audio Cable
Brand : Gefen Gefen | Rate : 
| Price : $348.30
Post Date : Nov 26, 2011 10:45:22 | Usually ships in 1-2 business days
| Price : $348.30Post Date : Nov 26, 2011 10:45:22 | Usually ships in 1-2 business days
Package Contents: VGA Audio Sender Unit, VGA Audio Receiver Unit, 1 x 6ft VGA cable, 1 x 6ft Audio cable, 2 x 5V DC Transformer and User's Manual. Input Voltage: 5 V DC.
- Gefen VGA Audio Extender/Console.
- Return Period (Days):30. Manufacturer Warranty:1 YEAR.
- 1 x 1 - VGA, UXGA.
- Input Ports: 1 x 15-pin HD-15 Male Video, 1 x Audio Line In and 1 x Microphone.
- Output Ports: 1 x 15-pin HD-15 Female Video, 1 x Audio and 1 x Microphone.
Discount Diamond Microdermabrasion Cheep Kitchenaid Mixer Pro Top 10 Ikea Delivery Charges
Wednesday, November 23, 2011
Sunday, November 20, 2011
Voltage Transformers
The transformer is an electrical device, which transforms voltage through magnetic coupling with no moving parts. It consists of a magnetic core, with two or more coupled windings, which either steps up or steps down the incoming voltage. This is done by the transfer of energy from one circuit to the other, through the magnetic core. These windings are generally termed as Primary and Secondary windings. The electromagnetic field thus created under goes a process of expanding and collapsing around the conductor and this changes the induced current, with the formation of an out put from the secondary coil, either stepping up or stepping down the input voltage.
In order to understand the function of a transformer, only two sets of windings are considered. When the main AC voltage is applied to the input of such an electrical device, the alternating current in the Primary winding creates a time varying magnetic flux in the core. This induces an AC voltage in the secondary coil, which is either the step up or step down voltage of the device. The terms, step up and step down are used with respect to the input voltage of the device. Therefore, if your equipment has been specified as input voltage 110 Volts AC, and if you are in one of those countries where the mains power supply is 220 Volts AC, you will need a step down transformer to run your equipment.
In high tension power transmission, where huge towers carry the cables which brings the power to cities, towns and villages, step up transformers are used as the power leaves the power stations and as they approach the destinations, the voltage is stepped down to the required mains supply, before it is distributed amongst the consumers. The reason for stepping up the power as they leave the power station is for the fact that,as it travels down the long power cables, there are power losses in the way, and the supply can reach the destinations in a proper specified power level to be stepped down as required by the consumers. In this application there are good many use of transformers are made.
The transformer is the most simplest of all electrical devices and its basic principle has not changed over the last 100 years, though the material used in such transformers and its design continue to improve. It has a very important application in transforming electrical energy, both for consumer use and power transmission. In a similar way, audio frequency transformers have been used in earlier experiments in development of telephones. These are still found in many electronic devices. The transformers come in various sizes, depending upon the application it is required for. It comes in the size of a thumb nail to huge units for the power transmission applications of national power grids. They all operate with the same basic principles.
The core of the transformer, as we have seen above, may be made with various materials. These include:
Air - This is ideal for high frequency transformer, with application in Radio Frequencies and provides least coupling.
Iron - All so called iron core transformers are steel. Various additives are made to improve the magnetic properties, as for example the magnetic permeability. The degree of magnetisation of a material required for a linear response to an applied magnetic field is termed as Permeability.
Ferrite - This is used to get a very high degree of permeability and excellent high frequency performance.
Etc.
The converter and the transformer are both electric conversion products, that enables you to run electric devices in foreign lands. As discussed earlier, if your electric device requires 110 Volts AC to run, you will need a transformer to step up the 220 volts AC supply voltage to 110 Volts AC before you can switch on that device that you have.
What is the difference between a converter and a transformer? If the device you are going to operate is a high power heating element or mechanical motor such as a hair dryer or iron, you will need a converter to run those appliances. But if your device is a computer, a printer or a VCR, you will need a transformer. Both of these category of appliances and devices can be run by a transformer, but only the electric appliance can be run with a converter. A word of caution in here is that, while transformers are designed for long term continuous operation, converters on the other hand can operate for an hour or two at a time.
In order to understand this better, we must understand the formation of a AC voltage. The alternating current voltage appears as a sine-wave, and depending upon the country you are in, the frequency of this sine-wave is either 50Hz or 60Hz. Now, if you look at a converter output, you would see that the upper half of the sine-wave has been chopped off, where-as, in a transformer the sine-wave remains in-tact. The electrical devices, like, iron, heater, a hair dryer, etc, would run with such a converter, but a computer, a printer or a VCR can be damaged if you attempt to operate those with a converter.
The frequency is the number of times the alternating voltage alternates each second. One such alternating cycle is termed as Hertz, having Hz as the short form. This cycling wave is termed as a Sinusoidal Wave. In the U.S. and the rest of North and Central America, with some parts of South America, the alternating current suppy is 60Hz. In Europe and rest of the world it is 50Hz.
There is a similar electrical device called Inverter. The purpose of this equipment is to convert Direct Current (DC) voltage to Alternating Current voltage. This device has many applications, for example, to provide appropriate limited AC power supply to devices like, electric fans, lights, etc. This inverter takes the DC voltage from a battery, like a heavy duty car battery and converts that into an appropriate AC voltage. Such supplies are limited because of the capacity of the battery capability and depending upon the battery the ampere-hour of the output can be increased, resulting in longer period of operation. The battery will need charging once it discharges.
There are variable transformers, which are known as Variacs. The principle is that the output voltage of this transformer can be manually varied with a fixed voltage as its input. For example, with a 110 Volt AC supply at the input, you can vary the output voltage from 0 to 110 Volts AC. The typical applications of these transformers are in testing devices for its lower and higher input voltage operation levels, quality control in testing equipment in burn-in condition, temperature and lighting control, etc.
Transformers are essential devices to operate any electrical or electronic equipment. As far as main supply voltage is concerned, if you are visiting Europe or any other country in Asia, the devices that you are taking with you will not operate in the mains supply voltage available in those countries. It is therefore necessary that you take with you the right device which can provide you with the right operating voltage for your equipment.
Wednesday, November 9, 2011
Transformer Audio amp
Experimentations along the way to a Transformer based audio amp haha. ALL sounds are from the Transformer alone! no speakers
Wednesday, October 26, 2011
RDL TX-AT1 Audio Isolation Transformer
!±8± RDL TX-AT1 Audio Isolation Transformer
Brand : RDL | Rate : | Price : $78.95
Post Date : Oct 26, 2011 13:00:41 | Usually ships in 1-2 business days
| Price : $78.95Post Date : Oct 26, 2011 13:00:41 | Usually ships in 1-2 business days
The TX-AT1 is part of the group of versatile Max-TX series products from Radio Design Labs. Max-TX modules are the large format members of the RDL TX family, featuring the superior engineering and components common to RDL products. The durable adhesives provided with the TX-AT1 permit permanent or removable mounting. The TX-AT1 may be rack or surface mounted with optional TX series accessories. The TX-AT1 is the ideal choice in many applications requiring studio quality transformer coupling between balanced or unbalanced audio equipment and a balanced or unbalanced line. The TX-AT1 is a single-channel mono module featuring barrier block connections for the input and output. A studio-quality audio transformer couples the audio input to the audio output. A common ground terminal is connected to the TX-AT1 metal support structure.
- Studio Quality Bifilar Audio Transformer.
- Terminal Block Transformer Connections.
- Galvanic Isolation with 11 Transformer Coupling.
- Transformer to Drive 600 Ohm Line.
- Convenience of RDL TXs.
Buying Stairmaster Lowest Price Power Inverter Keurig K-cup Brewers Buy
Saturday, October 22, 2011
ASUS Eee Pad Transformer TF101-B1 10.1-Inch Tablet Computer (Tablet Only)
!±8± ASUS Eee Pad Transformer TF101-B1 10.1-Inch Tablet Computer (Tablet Only)
Rate :
| Price : $446.99 | Post Date : Oct 23, 2011 00:00:07Usually ships in 1-2 business days
With a slim, lightweight design and a 10.1-inch WSVGA IPS capacitive display made from durable and scratch-resistant glass that is viewable at angles up to 178°, the versatile Eee Pad Transformer is the perfect tablet for anyone who want to enjoy multimedia on the move, but still wish to have easy access to the web, email, and other productivity applications. A custom user interface provides easy access to the many features of the Android 3.2 (Honeycomb) operating system, while the NVIDIA® Tegra™ 2 chipset provides full support for Adobe® Flash® 10.2,1 smooth HD video conferencing and playback, a lightning fast web experience, and incredible mobile gaming performance. Front and rear cameras make for easy video chat and digital photography, which can be played back in video on HDTVs via a mini HDMI output port, making it a true mobile entertainment device.
- Asus Eee Pad Transformer TF101 Mobile Docking
- rooCASE Multi-Angle (Black) Leather Folio Case Cover for Asus Eee Pad Transformer 10.1-Inch TF101 Android Tablet Wi-Fi
- amCase (TM) Premium Screen Protector Film Clear (Invisible) for Asus EEE Pad Transformer 10.1 inch Touchscreen Tablet (2 Pack)
- VIPERTEK Multi-Angle Leather Folio Case Cover for Asus Eee Pad Transformer 10.1-Inch TF101 Android Tablet Wi-Fi (Black)
- rooCASE Capacitive (Black) Stylus for ASUS Eee Pad Transformer TF101-A1 10.1-Inch
Casio Privia Coupon Kitchenaid Mixer Ice Cream Free Shipping
Thursday, October 20, 2011
Ebtech Hum X Voltage Hum Filter
!±8± Ebtech Hum X Voltage Hum Filter
Brand : Ebtech | Rate : | Price : $56.09
Post Date : Oct 21, 2011 00:45:16 | Usually ships in 24 hours
| Price : $56.09Post Date : Oct 21, 2011 00:45:16 | Usually ships in 24 hours
Eliminates ground loop hum. Just connect the HE-2 in between the offending pieces of equipment and your done. Also converts balanced and unbalanced signals. 2 channel box.
More Specification..!!
White Wardrobe Armoire Coupon Order Vicks Vaporub Pregnancy Rice Krispies Cake Reviews
Subscribe to:
Posts (Atom)
|
|
|
|
 |
 |
 |
 |
 |
 |
 |
 |