I'm having a hard time visualizing how this works.
The pins are on
springs so that you press the board down and the pins retract?
Imagine a stick and a tube. Put a coil inside the tube and the stick
inside the tube in top of the coil. This is a pogo pin. You press the board
onto these pins and they retract, making electrical connections. They are
precisely placed to contact special test points on the board or anywhere you
want to probe.
Wikipedia is your friend :o)
Greetz from Brazil
Alexandre Souza
http://www.tabajara-labs.com.br