Some variants use a conductive pyrotechnic composition as the resistive material.
Fins of resistive materials can also be added.
Resistive systems have a layer of resistive material and another layer of conductive material.
The second type of pressure sensitive digitiser uses two sheets of resistive material separated by a cellular membrane.
Thin film resistors are made by sputtering (a method of vacuum deposition) the resistive material onto an insulating substrate.
Since the FG is completely surrounded by highly resistive material, the charge contained in it remains unchanged for long periods of time.
They are also found in the cores of potentiometers in which the resistive material is wrapped round.
When current is conducted through a resistive material a certain level of heat is generated.
Shocks have much less effect today than at Breguet's time thanks to stronger and more resistive materials.
The accuracy and robustness against condensation vary depending on the chosen resistive material.