Minia ture Trigge r
Tra ns form e rs
TR-2 1 8 9 /2 1 9 0 /2 2 0 6 /
2 2 0 7
These transformers were custom-
designed for reliable triggering of the
PerkinElmer GP-485/486/488/489
triggered spark gaps. They have
operating circuit output voltages well
above the maximum required by the
switches and are capable of sustain-
ing the trigger to adjacent electrode
current during the turn-on phase of
gap operation. These transformers
are constructed using miniature
low input voltage transformers,
round, with flying leads and solder
connections. The TR-2190 and
TR-2207 are high input voltage
transformers, square, with pins for
PC board connection.
1.0 MΩ
+
PS
TR
V
T(IN)
SF
C
T
PF
SS
v
T(OC)
cores, wound and potted, to produce
high output voltage with a minimum
of corona at twice rated output volt-
age. The TR-2189 and TR-2206 are
2N6798
Transformer Circuit
TR-2189/2206—Low Voltage
V
= 20 V v
= 3.85 kV, Peak
V
= 110 V v = 4.37 kV, Peak
T(OC)
TR-2190/2207—High Voltage
Peak v vs Peak V
T(IN)
T(OC)
T(IN)
Peak v
vs Peak V
T(OC)
T(IN)
T(OC) T(IN)
7
6
9
8
TR-2189
TR-2206
TR-2190
TR-2207
7
6
5
4
GND
5
GND
C = 0.1µf
T
C
T
= 2.2µf
4
3
3
2
500ns/Div
500ns/Div
TIME
2
TIME
5
10
15
V
20
25
30
35
40
45
0
50
100
150
200
250
—INPUT VOLTAGE, kV
V
—INPUT VOLTAGE, kV
T(IN)
T(IN)
Notes: 1. Pulse rise time (10 to 90% ): 2.2 µS max
2. Pulse width at 30% of max: 1.0 µS max
3. Corona pri-sec voltage of 8 kVDC
Output Voltage as a Function of Input Voltage
Output Pulse Shapes
SS
PS
PF
0.10 ± 0.02
(2.54 ± 0.5)
SS
SF
PS
PF
TR-2206
SF
TR-2189
0.700 ± 0.010
SQUARE
(17.78 ± 0.25)
#28 AWG
33 TEFLON
#28 AWG
E TEFLON
0.685 ± 0.010
Z917.4 ± 0.25)
0.031
(0.79)
PIN. TYP
0.400 ± 0.010
(10.16 ± 0.25)
0.400 ± 0.010
(10.16 ± 0.25)
0.10 ± 0.02
(2.54 ± 0.51)
0.520 ± 0.005
SQUARE
(13.21 ± 0.13)
0.200 ± 0.010
(5.08 ± 0.25)
TR-2189
*TR-2190
TR-2206
TR-2207
*TR-2190 primary input leads are #30 AWG
E Teflon covered wire
Note: Dimensions in inches (mm in parentheses)
Me chanical Spe cifications
p a g e 5
P e r k in E lm e r Op to e le c tro nic s
PERKINELMER [ PERKINELMER OPTOELECTRONICS ]
