Features:

HV power supply for Photo Multiplier Tubes (PMTs)
directly integrated into the socket .

Features
HV power supply compact on the base
Low ripple & noise
Low EMI
Low power consumption
Stabilised dynode voltages guarantee high linearity
even at high pulse load and pulse rates
Control and monitor capabilities
CAN interface (optional)
There are many reasons to generate the HV and the
distribution for the dynodes on the base of the PMT itself.

The big points, which lead to lower cost and to better
technical specifications are:

No HV cabling and no HV connectors
No separate HV power supply
Less space
Less power consumption on the socket ( more than factor 10 ! )
Less problems with temperature and thermal balance
Safe anode current limitation to protect the PMT
Stable dynode voltages at high pulse rates
The control and monitoring of this PMT HV PS works with analogue
and digital signals.
Together with the optional CAN interface a single PMT as well as a
system of any number of PMTs is under full remote control via
this serial interface.


Now we have established a basis of tested PHQxxx in order to be
prepared for this kind of design of power supply for all interesting types of PMTs.


You tell us your type of PMT and your mechanical and physical demands.
Then we will quote and will make an offer for a cost effective prototype.

Your tests will convince you.


Summary of the circuit theory
The high voltage for the Photo Multiplier Tube (PMT) supply is generated by
a patented resonance mode sine-wave inverter. This technique results in
very high efficiency and very low EMI. Sensitive signal amplifiers close to
the HV are not influenced in terms of thermal and electrical conditions. A
filter at the cathode reduces ripple and noise to less than 10 mVp-p. A high-
valued resistor voltage divider provides the necessary dynodes voltages.
For the last 3 to 6 dynodes this divider just makes the reference signal for a
special amplifier ( stabilizer ). The respective dynode voltage correspondents
to the reference signal, but the power to stabilise this potential is coming
directly from the cascade or the multi tap transformer. With help of this
active stabilisation the voltage at these dynodes is kept constant even at
high pulse load and high pulse rates.

Description:

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