Teledyne Tablet Accessory T803 Manual De Usuario

Teledyne API considers the prevention of damage caused by the discharge of 
static electricity to be extremely important part of making sure that your analyzer 
continues to provide reliable service for a long time.  This section describes how 
static electricity occurs, why it is so dangerous to electronic components and 
assemblies as well as how to prevent that damage from occurring. 

13.1. HOW STATIC CHARGES ARE CREATED 

Modern electronic devices such as the types used in the various electronic 
assemblies of your analyzer, are very small, require very little power and operate 
very quickly.  Unfortunately, the same characteristics that allow them to do these 
things also make them very susceptible to damage from the discharge of static 
electricity.  Controlling electrostatic discharge begins with understanding how 
electro-static charges occur in the first place. 

Static electricity is the result of something called triboelectric charging which 
happens whenever the atoms of the surface layers of two materials rub against 
each other.  As the atoms of the two surfaces move together and separate, some 
electrons from one surface are retained by the other.   

 

 

If one of the surfaces is a poor conductor or even a good conductor that is not 
grounded, the resulting positive or negative charge cannot bleed off and becomes 
trapped in place, or static.  The most common example of triboelectric charging 
happens when someone wearing leather or rubber soled shoes walks across a 
nylon carpet or linoleum tiled floor.  With each step, electrons change places and 
the resulting electro-static charge builds up, quickly reaching significant levels.  
Pushing an epoxy printed circuit board across a workbench, using a plastic 
handled screwdriver or even the constant jostling of Styrofoam

TM

 pellets during 

shipment can also build hefty static charges 

07276B DCN6418