Skip to main content

Posts

Showing posts from June, 2016

Simple and Effective ESD Testing Techniques for Higher Reliability

We’ve all experienced the effect of electrostatic discharge at some point in our lives, the most common case being a tingling sensation one feels after touching a door knob or any metal surface. When the body is electrically isolated from earth, like with a pair of rubber sandals, a few foot slides can make it charged. This charge is maintained until the body comes in contact or in close proximity with a conductor that serves as a discharge path. If the body would feel a jolt, the electromotive potential induced is in the order of 4 kV. 4 kilovolts sure sounds like a scary figure but the body’s resistance is fortunately within the Mohm range. Thus, the effective power isn’t enough to cause any internal injury. I remember trying to measure my body’s resistance waaaaay back when I was in college, during a laboratory class. I was goofing around, wondering what the multimeter would read when I placed the terminals in between the palms of my hands, and I indeed got unstable readings in th…