hrs connectors 24/12/2008

Properties of electrical hrs connectors

An ideal electrical hrs connector would have a low contact resistance and high insulation value 14/01/2005  It would be resistant to vibration 23/11/2009  water or other contaminants 20/01/2006  and pressure 20/04/2007  It would be easily mated/unmated 03/04/2008  unambiguously preserve the orientation of connected circuits 02/09/2007  reliable 29/08/2008  carry one or multiple circuits 25/08/2005  Desirable properties for a wholesale hrs connectors also include easy identification 11/07/2009  compact size 21/01/2005  rugged construction 13/01/2009  durability (capable of many connect/disconnect cycles) 04/11/2008  rapid assembly 22/01/2009  simple tooling 08/01/2005  and low cost 28/10/2005  No single hrs connectors has all the ideal properties 22/05/2007  The proliferation of types is a reflection of the differing importance placed on the design factors 06/05/2007

The safety ground in some power wholesale hrs connectors 02/01/2008  and certain crucial contacts in some hot swapping hrs connectorss 20/10/2007  are designed to be first to mate / last to unmate 15/02/2009
Keying
XLR wholesale hrs connectors 19/02/2007  showing the notch for alignment 14/11/2006
4-pin Mini-DIN S-Video cable: the notches are the keying showing the keying 05/04/2005
4-pin Mini-DIN pinout: the off-center rectangle and surrounding notches are a key 08/07/2006

Many hrs connectors are keyed 22/04/2006  meaning that they have some component which prevents mating except with specific wholesale hrs connectors or in a specific orientation 13/01/2009  This can be used to prevent incorrect or damaging interconnections 24/08/2005  either preventing pins from being damaged by being jammed in at the wrong angle or fitting into imperfectly fitting plugs 29/03/2007  or to prevent damaging connections 23/04/2009  such as plugging an audio cable into a power outlet 13/11/2006  For instance 24/12/2008  XLR wholesale hrs connectors have a notch to ensure proper orientation 19/12/2009  while Mini-DIN plugs have a plastic projection 02/11/2009  which fits into a corresponding hole in the socket and prevent different wholesale hrs connectors from being pushed together (they also have a notched metal skirt to provide secondary keying) 29/03/2005
Types of electrical wholesale hrs connectors

A terminal is a simple type of electrical wholesale hrs connectors that connects two or more wires to a single connection point 23/11/2008  Wire nuts are another type of single point wholesale hrs connector 14/09/2009
Terminal blocks of various types 14/12/2009
Terminal blocks

Terminal blocks (also called terminal boards or strips) provide a convenient hrs connectors means of connecting individual electrical wires 20/12/2008  They are usually used to connect wiring among various items of equipment within an enclosure or to make connections among individually enclosed items 26/07/2007  Since terminal blocks are readily available for a wide range of wire sizes and terminal quantity 22/11/2006  they are one of the most flexible types of electrical hrs connector available 25/01/2005  Some disadvantages are that connecting wires is more difficult than simply plugging in a cable and the terminals are generally not very well protected from contact with persons or foreign conducting materials 25/08/2008

One type of terminal block accepts wires that are prepared only by removing (stripping) a short length of insulation from the end 03/03/2009  Another type accepts wires that have ring or spade terminal lugs crimped onto the wires 22/09/2007  Printed circuit board (PCB) mounted terminal blocks allow individual wires to be connected to the circuit board 28/05/2009  PCB mounted terminal blocks are soldered to the board 27/05/2007  but they are available in a pull-apart version that allows the wire-connecting half of the block to be unplugged from the part that is soldered to the PCB 29/06/2006
[edit] Posts
A binding post (red and black) adaptor 28/05/2009
For more details on this topic 18/11/2008  see Binding post 18/10/2007

A general type of wholesale hrs connectors simply screws or clamps bare wire to a post 20/01/2007  such hrs connectors are frequently used in electronic test equipment and audio 12/12/2008
Crimp-on hrs connectorss
For more details on this topic 04/10/2006  see Crimp connection 25/08/2005

A type of solderless connection 13/01/2005
Insulation displacement wholesale hrs connectors
Main article: Insulation-displacement hrs connectors

Since stripping the insulation from wires is time-consuming 03/05/2009  many wholesale hrs connectorss intended for rapid assembly use insulation-displacement wholesale hrs connectorss so that insulation need not be removed from the wire 15/08/2008  These generally take the form of a fork-shaped opening in the terminal 24/10/2006  into which the insulated wire is pressed and which cut through the insulation to contact the conductor within 26/09/2007  To make these connections reliably on a production line 21/02/2006  special tools are used which accurately control the forces applied during assembly 12/05/2008  If properly assembled 12/09/2007  the resulting terminations are gas-tight and will last the life of the product 07/06/2006  A common example is the multi-conductor flat ribbon cable used in computer disk drives 18/01/2008  to terminate each of the many (approximately 40) wires individually would be slow and error-prone 11/04/2009  but an insulation displacement wholesale hrs connector can terminate all the wires in (literally) one stroke 19/02/2009  Another very common use is so-called "punch down" blocks used for terminating telephone wiring 06/08/2005

Insulation displacement hrs connectors are usually used with small conductors for signal purposes and at low voltage 06/07/2005  Power conductors carrying more than a few amperes are more reliably terminated with other means 01/08/2005  though "hot tap" press-on wholesale hrs connectorss find some use in automotive applications for additions to existing wiring 03/05/2007
Plug and socket wholesale hrs connectors
Main article: Gender of wholesale hrs connectorss and fasteners
See also: Pinout
A male plug made by Amphenol 11/12/2006

Plug and socket hrs connectors are usually made up of a male plug (typically pin contacts) and a female receptacle (typically socket contacts) 08/02/2009  although hermaphroditic wholesale hrs connectors exist 18/11/2005  such as the original IBM token ring LAN wholesale hrs connectors 19/10/2005  Plugs generally have one or more pins or prongs that are inserted into openings in the mating socket 28/03/2007  The connection between the mating metal parts must be sufficiently tight to make a good electrical connection and complete the circuit 11/11/2005  When working with multi-pin hrs connectorss 01/10/2009  it is helpful to have r4 a pinout diagram to identify the wire or circuit node connected to each pin 21/07/2008