Oriel Photomultiplier Tube Power Supply
  • High stability
  • 2000 VDC, 2 mA output
  • Outputs for two photomultiplier tubes
  • Remote control
Print View
Technical Question
Share This Page
Feedback
DescriptionSpecifications Models Catalog PDF
70705 PMT Power Supply.

Dual Outputs for Ratio Measurements

The 70705 Power Supply has an LED digital display and two high voltage BNC outputs for photomultiplier tubes. Since both outputs are on the same power supply, this ensures that two similar PMTs can be operated with a minimum of independent drift. This can be critical when one PMT is monitoring a reference light beam, for instance, while the other is measuring the sample signal.

Remote Controls

The 70705 provides the ability to control output voltages, both the value (0 to 9 V analog input) and ON/OFF. The ON/OFF feature can be used for an interlock function, for operator safety, and/or to protect the PMT from excess light such as may occur when changing samples.

Complete PMT Systems

We offer complete PMT systems, or you can assemble your own system, here we suggest a few additional solutions, if you're putting together your own PMT system. PMTs function as current sources. Therefore, you need either a transimpedance amplifier or a resistor to convert the output current to voltage for the reading electronics to measure signal strength.

For DC to 100 kHz operation, we suggest the 70710 Transimpedance Amplifier providing gains from 104 to 109 V/A and selectable filter functions. For pulsed operation use the 70721 or 70723 with 50 Ohm input impedance to boost a 1 µA signal to a few millivolts while minimizing reflections. The 70703/70709 Laboratory Power Supply provides the ±15 V, and +5 V outputs to satisfy the requirements of our amplifiers.