Tech Note 552 Detail

Electrostatics Voltage Source voltages are lower than rated.

Affected Products:

ES-9077 Electrostatics Voltage Source

Problem/Symptom:
Electrostatics Voltage Source voltages are lower than rated.

PASCO Solution:

A small quantity of electrostatic voltage sources were produced with defective circuit boards whose design could result in abnormally low voltages.

An acceptable circuit board has grooves cut into the board to decrease the change of conduction across the surface of the board:


Good Board

A defective circuit board lacks these grooves:


Bad Board

To view the circuit board, remove the two Phillips screws in the back of the case and remove the back of the case.

After checking the circuit board, ensure the case is put back together and the screws put back in and tightened before operating the voltage source.

Creation Date: 10/20/2005
Last Modified:
Mod Summary: