Showing posts with label Twin-lead. Show all posts
Showing posts with label Twin-lead. Show all posts

Tuesday, February 9, 2016

ribbon cable connectors,cable connectors

ribbon cable connectors

Ribbon cable connectors are used in many consumer devices and are the order of the day in the personal computer. While flat cable in the length, width and thickness vary, most of them wedged connections that only the cable to be connected in one orientation. Many of the smallest tape cable not provided with connectors and are by inserting it in a connector connected, usually mounted on the circuit board that you thought in order to connect.

How to Connect Ribbon Cable - ribbon cable connectors

Just check the cable and the plug of the cable should be connected. In many cases the connector of the flat ribbon cable is entered either with one or more holes are in the socket (with a corresponding distance of the pins of the matching male connector), or by an additional "bump out" is added to one side of the connector is locked and a corresponding slot of his buddy cut.
Some of the ribbon cable is a rotation in one or more of the wires, and this is a clear indication that the cable be installed special attention must be paid to the end, a connection to the device which ​​Anschluss.
In all cases for all requirements on the cable checked thoroughly itself or the connection piece is recommended. In many cases you pin with a distinctive stripes on the edge of the flat ribbon cable marked where pin one is.


ribbon cable connectors - Align the connector and socket directly. As soon as you have clearly identified, the end of the connector is designed to go where and they have found where a pin is aligned, the lining of the male and female connector is directly is essential. Volume connections must be directly into the host connector can be and any deviation from this you can use the plug lead to crack, the pins are bent.
Usually very little force required to move the cable connector into the mating connector, and if you insert a resistor to the connector tracks drifting into his buddy, it is recommended that you use the cable out of the connector and remove again check both sides of the connection to see if there are any questions.


Note that some of the ribbon cables, in particular, the high-density 80-pin IDE cables to find computers may not only require that particular attention should be paid to make the connector is connected to the connector, but also which device is connected to which ​​Anschluss. In cases such as this, the connections in the rule are clearly identified.


If for any reason, the pin connector bent, a few use needle-nose pliers to straighten the pins. Be careful, these pins in the rule hollow and pressed the pins too hard will destroy them and make it impossible for the cable to connect.


A kind of flat ribbon cables that are commonly found in laptop computers have no connections to the cable itself is mounted. In these meetings, the cable is usually of a Mylar film (or something like that) with the conductor tracks embedded in the cable of the base material. These cables are particularly tricky and both require patience and skill.
To these cables to the appropriate housing, align the tape directly with its connector. Now insert the tape into the connector, make sure that it is not in the track at an angle. Please note that a sharp curve could the cable of the conductivity to affect or to destroy it.

Video 1 ribbon cable connectors

Connect ribbon cable to Nallatech 385 JTAG adapter board


Friday, February 5, 2016

Twin-lead
Twin-lead cable is a two-conductor flat cable as a transmission line used to high-frequency signals (HF). It is made of two multi-Cu or copper-steel wire, held a precise distance from each other by a plastic (usually) polyethylene tape. The uniform beab stan manure of wires is the key for the function of the cable as the parallel transfer cable, no abrupt changes in the distance was high-frequency power back in the direction of the source to reflect.Twin-lead Also the plastic covers and isolates the wires. In 300 Ohm twin wire, is the most common type of wire in the Rule 20 or 22 gauge, approx. 7.5 mm (0.30 inches) apart.  Twin Lead less signal loss as a coaxial cable, the main competing form of transmission line , but is more susceptible to faults Twin-lead.

How it works Twin-lead

Twin Lead is a form of parallel wire symmetric transmission line. The separation between the two wires in a twin-lead is small compared to the wavelength of the radio frequency (RF) signal carried on the wire.  The RF current in a wire in the same size and in the opposite direction to the RF current in the other wire. It is therefore in the region of far-field far from the transmission line, the radio waves emitted by a wire are equal but opposite in the phase (180° phase shifted) to the waves that radiated by the other wire so that they overlap and cancel each other.  The result is that there is almost no net radiative energy emitted by the line.
In a similar way, any disturbing external radio waves equal to induce, in phase HF currents in the same direction, in the two wires. As the load on the centerd on the wires connected to only difference, counter-related flows in the wires a current in the load create. Thus the disturbing currents is lifted, ribbon cable does not have a tendency to get, radio noise. Twin-lead
However, if a piece of metal is sufficiently close to a double track line within a distance comparable with the wire distance, it is for the wire much closer than the other. As a result in the metal object on the RF current through a wire will be greater than the opposite induced current by the other wire is induced, so that the currents are no longer cancel. So in the near body can power losses in the double connection lines cause, by energy as heat is dissipated by induced currents. You will also find building radio noise in cables or metal objects in the vicinity of the two-wire line can be asymmetrical currents in the wires induce noise coupling in the line.

Flexible flat cable



Twin-lead - Chicken ladder


ladder line or "window" line is a variant of the ribbon cable that is similar with the exception that the polyethylene belt between the wires that you hold apart rectangular openings ( "window") cut in it. [1] [3] The line consists of two insulated wires with "shoots" made of plastic, you every few inches so that it appears a ladder. The advantage of the "Window" is that the line and also reduce the amount of surface on the dirt and moisture buildup lighten so that chicken ladder less susceptible to weather-related changes in the shaft resistance. The most frequent type of 450 Ohms Chicken ladder, a wire spacing of approximately one inch Twin-lead
ladder line also can be produced or DIY-designed as "open-wire line", consisting of two parallel wires with widely spaced plastic or ceramic insulating bars and with a characteristic impedance of 600 ohms or more. ribbon cable