Miniature Trigger
Transformers
TR-2189/2190/2206/
2207
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
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
TR-2189/2206—Low Voltage
Peak vT(OC) vs Peak VT(IN)
7
6
5
4
3
2
5
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
VT(IN)
CT
PF
SS
vT(OC)
PS
TR
SF
2N6798
Transformer Circuit
vT(OC)—TYPICAL OUTPUT VOLTAGE, kV
vT(OC)—TYPICAL OUTPUT VOLTAGE, kV
TR-2190/2207—High Voltage
Peak vT(OC) vs Peak VT(IN)
9
8
7
6
5
4
3
2
0
50
100
150
200
VT(IN)—INPUT VOLTAGE, kV
250
VT(IN) = 20 V vT(OC) = 3.85 kV, Peak VT(IN) = 110 V vT(OC) = 4.37 kV, Peak
TR-2189
TR-2206
TR-2190
TR-2207
vT(OC)
500ns/Div
TIME
vT(OC)
CT = 2.2µf
CT = 0.1µf
GND
500ns/Div
TIME
GND
10
15
20
25
30
35
40
45
VT(IN)—INPUT VOLTAGE, kV
Output Voltage as a Function of Input Voltage
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 Pulse Shapes
3 IN. MIN
(76.20)
TYP
YEL/W
H
T
BLK
PS
0.10
±
0.02
(2.54
±
0.5)
PF
SS
TR-2206
SF
PS
PF
SS
SF
TR-2189
RED
YEL
#28 AWG
33 TEFLON
0.700
±
0.010
SQUARE
(17.78
±
0.25)
0.685
±
0.010
Z917.4
±
0.25)
#28 AWG
E TEFLON
0.031
(0.79)
PIN. TYP
0.400
±
0.010
(10.16
±
0.25)
0.400
±
0.010
(10.16
±
0.25)
TR-2189
*TR-2190
0.10
±
0.02
(2.54
±
0.51)
0.520
±
0.005
SQUARE
(13.21
±
0.13)
TR-2206
TR-2207
0.200
±
0.010
(5.08
±
0.25)
*TR-2190 primary input leads are #30 AWG
E Teflon covered wire
Note: Dimensions in inches (mm in parentheses)
Mechanical Specifications
page 5
PerkinElmer
Optoelectronics
PERKINELMER [ PERKINELMER OPTOELECTRONICS ]
