X-ray analysis apparatus and detector reading circuit means suitable for application in such an X-ray analysis apparatus

An x-ray analysis apparatus comprising an x-ray source, a sample holder, and an x-ray detector with detector reading circuit means which comprises:

• a high-frequency operational amplifier having an inverting input port, a non-inverting input port, and an output port;
• a parallel combination of an integration capacitor and controllable means for discharging the integration capacitor, said parallel combination being coupled to one end to said non-inverting input port and at the other end to a constant reference potential;
• and
• circuit means for supplying a control signal for activating said discharging means.

A detector reading means suitable for an x-ray analysis apparatus, said detector reading circuit means comprising:

• a high-frequency operational amplifier having an inverting input port, a non-inverting input port, and an output port;
• a parallel combination of an integration capacitor and controllable means for discharging the integration capacitor, said parallel combination being coupled at one end to said non-inverting input port and at the other end to a reference potential;
• and
• circuit means for supplying a control signal for activating said discharging means.