PS18090 pages

photomultiplier power base (negative)
PS1809 data sheet
1

SENS-TECH
SENSOR TECHNOLOGIES

description

The PS1809 is a compact photomultiplier power base, operating
at negative high voltage. The CW principle of operation
provides the lowest power consumption within our range of
power bases. This is particularly relevant to battery operated
equipment. It is suitable for use with 10 stage, 52 mm diameter,
photomultipliers with an overall voltage range of -300 to -1800 V.
It is available in two versions: the PS1809/5 operates from a
+5 V supply and the PS1809/12 requires +12 V.
It is housed in a cylindrical metal enclosure to provide electrical
screening. Low voltage connections are by 450 mm long
insulated leads, and the anode output is via a 450 mm long
RG174U screened coaxial cable. 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.

2

applications

5

The PS1809 is suitable for the following applications:

l

pulsed light
photon counting

3

features

l

l
l
l
l
l
l

ratings

input voltage (PS1809/5)
input voltage (PS1809/12)
control voltage
temperature (operating)

6

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

l

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

+5 V to +8 V
+12 V to +15 V
0 to +1.6 V
+5 °C to +55 °C

schematic diagram
electrodes

red

4

DC
HV

specification

output voltage range
anode current at 1800 V
input current, full load (PS1809/5)
input current, full load (PS1809/12)
input current, idling (PS1809/5)
input current, idling (PS1809/12)
load regulation
line regulation
temperature coefficient
warm up time to 0.3 % of final output
discharge time to <40 V with no load
anode ripple with 10 kW/20 pF, 1 kV
external voltage control
weight

CW divider

blue

yellow

-300 V to -1800 V
200 µA
<25 mA
<10 mA
£ 20 mA
£ 7 mA
0.005% (0-100%)
-1
0.005 % V
-1
<0.03 % °C
< 10 s
< 60 s
£ 5 mV p-p
0.3 V - 1.8 V
(0-100%)
80 g

ref

black
white

k
d1
d2
d3
d4
d5
d6
d7
d8
d9
d10

a

RG174U

example of output voltage with 1.2 volts
applied to control (white) wire
contact electrode voltage contact electrode voltage
1
2
3
4
5
6

d1
d2
d3
d4
d5
d6

-1000
-900
-800
-700
-600
-500

7
8
9
10
11
14

d7
d8
d9
d10
a
k

-400
-300
-200
-100
0
-1200