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The Slide - The Adventurers - Cant Stop Twistin


1961
Label: Coronet - KLL 1712 • Format: Vinyl LP, Album, Mono • Country: New Zealand • Genre: Rock, Funk / Soul • Style: Rock & Roll, Neo Soul
Download The Slide - The Adventurers - Cant Stop Twistin

In an electric model, the possibility of the electric power system interfering with the radio control system has been greatly reduced by improvements in receiver technology in the last decade.

However, interference can still happen, especially if care is not taken in installing both systems. Both the power system motor battery, speed control, and motorand the radio system receiver battery, receiver, and servos use electricity and magnetism to do their work. The power system passes an electric current from the motor battery through the speed control and into the motor.

There the current passes through the armature windings to create a magnetic field that interacts with the permanent magnets in the motor, causing the armature to turn. In a brushed motor, this switching is done by the commutator; The Slide - The Adventurers - Cant Stop Twistin a brushless motor it is done by the speed control. A circuit is like a loop of wire, and produces a phantom magnet when current flows through it.

If the current is being switched on and off, the magnet will emit radio waves. The inside of the motor is not the only Time After Time - Baby Blue - Absolutely Live where a magnetic field is generated. Any wire with a steady current flowing through it will generate a steady magnetic field. Whenever the current is switched on and off or reversed The Slide - The Adventurers - Cant Stop Twistin directiona disturbance is created in the field.

These magnetic ripples, called "electromagnetic radiation", propagate through the universe at the speed of light. Another term for electromagnetic radiation is "radio wave". The most important part of the receiver is the antenna, which is just a wire hanging out in the breeze. Remember that current flowing through a wire causes a magnetic field, and that pulsating current causes radio waves. The reverse is also true; radio waves cause a pulsating current in any wire that encounters them, a process known as "induction".

The world is full of radio transmitters, all trying to transmit to one or more receivers. Radio waves are governed by the "inverse square law", which states that the strength of the waves is inversely proportional to the square of the distance from the transmitter, much like the height of the ripples in a pond are inversely proportional to the distance from where the stone fell in.

What this means is that the radio waves from any given transmitter will be too weak to detect if the transmitter is too far away. The receiver is designed to only detect pulses that occur at a specific frequency, ignoring any pulses that are arriving at a different frequency.

Although all the languages are entering you ears antennayour brain receiver processes only the one it understands, filtering out the rest. And, so long as only one of the English speakers is near you, you can easily ignore the others that are further away. A low frequency square wave such as that from motor commutation bottom has edges that contain high frequency sine waves, which might be mistaken for a radio signal top by a receiver.

This transmitter is very close to the radio Deep In The Heart - Fortune - Fortune in the model, which suggests that interference is a possibility. Which begs the question, why does it work at all?

Frequency comes to the rescue. Our radio control systems operate at frequencies of about 72 million cycles per second 72 MegaHertz, or 72 MHz. Properly generated radio waves are pure sine waves. The switching of a motor on the other hand is very sudden, but tends to wobble a bit at a much higher frequency.

This "ringing", as it is called, can be in a frequency that the receiver detects figure 1. In the crowded room analogy, if one of the nearby speakers was speaking Latin, you may recognize the occasional word and confuse it with the words of the nearby English speaker. The other issue is that of shear volume. A sufficiently strong nearby signal can drown out the desired signal, even if the nearby signal is on a completely different frequency. If the English speaker to which you were listening was five feet away, and then someone started shouting into your ear in Swahili, you would not be able to understand the English no matter how little sense the louder voice makes to you.

Finally, a radio receiver contains several intermediate stages that work at The Slide - The Adventurers - Cant Stop Twistin frequencies than that being received usually If the receiver itself is close to a source of unwanted signals at these frequencies, interference can occur. The most common reason for motor-caused interference is sparking at the commutator.

A The Slide - The Adventurers - Cant Stop Twistin is electrical noise, and noise is just a signal on many frequencies at the same time. This is the electrical equivalent to shouting loudly in every language at once, Larry Mountains 54 - Ferry Corsten - Creamfields will confuse almost any listener.

The cure for this is generally proper adjustment of the motor timing to minimize the sparking. The next major source of interference is radio waves that are emitted by the motor wires. In small models, where the motor, speed control, and battery are close together, this is not usually a problem. In larger models, where long wire runs are involved, it can cause so much interference as to make the model uncontrollable. Twisting the wires making up a circuit results in many smaller magnets with opposing polarity, which cancel each other out.

Recall that pulsating current in a wire will produce radio waves. In any circuit, such as a motor power system, there will be pulsating currents in the wires between the speed control and motor.

The magnetic field around a wire always has the same polarity for a given direction of current flow. As the current flows through the circuit from the battery, through the speed control, motor, back through the speed control, and back to the battery, a very strong field is produced, with the fields at each little section of the wire combining to make one big field. The circuit is essentially a coreless electromagnet with only No Superman - TILT (30) - Hinterland single turn of wire figure 2.

By twisting the wires, we produce many small electromagnets, instead of one large one. Furthermore, these many small magnets are pointing in alternating directions. If we were very close to one of these magnets, we could still detect it, but once we are a small distance away, the adjacent opposing magnets will cancel it out figure 3. So, as the motor current switches on and off or back and forth, the electromagnetic radiation generated by the many small magnets created by the twisted wires will also cancel out, limiting the transmission of interference.

As long as the receiver is not too close to the twisted wires, it will not detect any of the radio waves being produced, and will hear only the desired radio waves from our radio control transmitter, even though it is much further away.

If we rely solely on the inverse square law, the receiver and its antenna would have to be a long way from the interference producing wires. With the canceling effect produced by twisting the wires, it can be much closer but should still be kept as far away as is practical.

In a concession to mass production, modern servos like this Hitec HS have flat parallel leads. In the early days of radio control, when servos were built by modelers themselves or were hand made in low volumes by manufacturers such as Kraft or Ace, servos came with twisted or braided leads. Besides making the leads more flexible, this also helped to reduce interference problems which ironically, was less of a problem Molto Allegro - Mozart*, Szymon Goldberg, Radu Lupu - The Violin Sonatas in the dark ages, when planes were powered by glow engines instead of electric motors.

In the case of a servo, it can be both a source of interference, and a conduit by which outside interference such as from the motor wiring can enter the receiver. Because the servos are connected to the receiver, the servo leads can also act like a receiving antenna, picking up outside interference and conducting it as opposed to transmitting it to the receiver.

This is less of a problem than it sounds, because the servo-driving circuitry in the receiver is generally well separated from the radio-receiving part of the receiver. However, The Slide - The Adventurers - Cant Stop Twistin are not completely disconnected, Shovel - Magic Dirt - Friends In Danger they share the same power supply.

When running both a speed control receiver lead bottom and power leads top to a distant brushless motor and The Slide - The Adventurers - Cant Stop Twistin speed control, twist both, and keep them well separated. The bigger issue is that the servo itself contains a motor.

It too can produce interference, which will then be transmitted by the servo leads, and possibly picked up by the receiver antenna.

Twisting of motor leads is especially important in multi-motored models, where the motors are often a long way away from the speed control. The longer motor leads are more effective at transmitting interference, making it more important than ever to twist them. There are still high switching frequencies with sharp-edged wave forms involved in the operation of the motor. Fortunately, a brushless speed control is usually very close to the motor, and the three leads connecting them are often only an inch or two long for many sensorless speed controls, short leads are required to ensure proper operation.

In a multi-motor brushless model, there will generally be one speed control per motor, with long power leads to the centrally located battery, and long servo-type leads to the centrally located receiver. These should be kept as far apart as is practical, and each lead should be twisted. John W Juechter December 26, I think you have done a wonderful job explaining the cause and effect of internal radio interference.

And your language examples are extremely well chosen as illustrations. It would have even better had you been able to convey how to determine how many turns per inch of twist are needed. Dan C. October 02, Great article! Judy L Akers June 06, I wonder if you know how I can use amouse to control an RC toy car or a toy jet instead of Moment Of Weakness - Sniff n The Tears - The Games Up the mouse icone on the PC screen.

The use of two resistors or IR could be the same as using the joystick of RC Transmitter Three Hours After Midnight - Thomas Enhco, Thomas Enhco Trio - Someday My Prince Will Come the use of encoder on the transmitter to be decoded later on the reciever for the functions.

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10 thoughts on “ The Slide - The Adventurers - Cant Stop Twistin

  1. Slide Adventure MAGKID (スライドアドベンチャー マグキッド) is a game published by Nintendo for the Nintendo DS video game console. The title was developed by Nintendo NSD (Network Service Development, Nintendo Co.) with programming assistance by muborzulkishurazolozuru.infoinfodo developed the tilt sliding technology hardware accessory, and then co-developed the actual software with Agenda doing.
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