PS18220 pages

photomultiplier power base (negative)
PS1822 data sheet
1

SENS-TECH
SENSOR TECHNOLOGIES

description

The PS1822 is a compact photomultiplier power base
incorporating a negative high voltage supply. The active divider
ensures low rate effect and low ripple.
It is housed in a cylindrical metal enclosure to provide electrical
screening. Low voltage connections are by 450mm long
insulated leads, and the anode output is via a 450mm long
RG174U screened coaxial cable.
The dynode potentials are provided directly to the socket
contacts. The anode is directly connected to the RG174U
coaxial cable - there is no load resistor.
The overall operating voltage for the photomultiplier can be
precisely set using any one of the three programming options
shown in section 9.

2

applications

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

The PS1822 is suitable for the following applications:
analogue
pulsed light
photon counting

3

features

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

4

ratings

specification

input voltage (PS1822/5)
input voltage (PS1822/12)
control voltage
temperature (operating)

6

schematic diagram
electrodes
B14A contacts

red

DC
HV

yellow

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

+4.75 V to +6.0 V
+11 V to +13 V
0 to +1.8 V
+ 5 °C to +55 °C

+5 V, 60 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
150 g

ref

active divider

·
·
·

5

black
white

14
1
2
3
4
5
6
7
8
9
10

k
d1
d2
d3
d4
d5
d6
d7
d8
d9
d10

11 a

RG174U

example of output voltage with 0.700 volts
applied to control (white) wire
contact electrode voltage contact electrode voltage
d8
d1
8
1
-500
-150
d9
9
d2
2
-450
-100
d10
10
d3
3
-400
-50
a
11
4
-350
0V
d4
nc
12
5
-300
d5
nc
13
6
-250
d6
k
14
7
-200
-700
d7
nc - no connection