PS18060 pages

photomultiplier power base (negative)
PS1806 data sheet
1

SENS-TECH
SENSOR TECHNOLOGIES

description

The PS1806 is a compact photomultiplier power base
incorporating a negative high voltage supply and an active
voltage divider. It is suitable for use with 11 stage, 30 mm
diameter, hardpin photomultipliers with an overall voltage range
of -100 to -1800 V. It is available in two versions: the PS1806/5
operates from a +5 V supply and the PS1806/12 requires +12 V.
It is housed in a cylindrical metal enclosure to provide electrical
screening. Low voltage connections are by 450 mm insulated
leads. The anode output is via a 450 mm long RG174U
screened coaxial cable.
The internal high voltage provides power to an active divider,
comprising a series of lower power FETs. The dynode
potentials are provided directly to the socket contacts.
The overall operating voltage for the photomultiplier can be
precisely set using any one of the three programming options
shown in section 9.

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5

applications

The PS1806 is suitable for the following applications:
analogue
pulsed light
photon counting

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ratings

input voltage (PS1806/5)
input voltage (PS1806/12)
control voltage
temperature (operating)

+4.75 V to +6.0 V
+12 V to +15 V
0 to +1.8 V
+ 5 °C to 55 °C

features

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compact design
freedom from high voltage cables
extremely low ripple
exceptional voltage divider stability with varying anode
current
excellent pulse height linearity
sleep mode

schematic diagram
electrode
B14A contact

DC
HV

yellow

4

ref

specification

input power at Vmax = -1800 V
power conversion efficiency, PO / Pin
input power at Vmax = -1800 V
power conversion efficiency, PO / Pin
output voltage range
line regulation
temperature coefficient
warm up time to 0.3 % of final o/p
discharge time to <40 V with no load
maximum anode current, continuous
anode ripple with 100 kW //5 pF load
weight

+5 V, 65 mA
40 % for +5 V
+12 V, 20 mA
50 % for +12 V
-100 V to -1800 V
0.05 % /V
-1
<0.02 % °C
<2s
<2s
100 µA
100 µV
60 g

black
white
RG174U

example of output voltage with 1.300 volts
applied to control (white) wire
contact electrode voltage contact electrode voltage
d10
nc
8
1
-200
d3
d8
9
2
-900
-400
d5
d6
10
3
-700
-600
d7
d4
11
4
-500
-800
d9
12
d2
5
-300
-1000
d11
13
k
6
-100
-1300
d1
14
a
7
floating
-1100

13
14
12
2
11
3
10
4
9
5
8
6

k
d1
d2
d3
d4
d5
d6
d7
d8
d9
d10
d11

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red
active divider

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Examples of the Sens-Tech’s range of power bases

a