page 5

PerkinElmer Optoelectronics

BLK

RED

0.10

± 0.02

(2.54

± 0.5)

3 IN. MIN

(76.20)

TYP

YEL/WHT

YEL

#28 AWG

33 TEFLON

0.685

± 0.010

Z917.4

± 0.25)

#28 AWG

E TEFLON

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)

0.400

± 0.010

(10.16

± 0.25)

0.031

(0.79)

PIN. TYP

0.700

± 0.010

SQUARE

(17.78

± 0.25)

PS

SS

SF

PF

TR-2206

TR-2189

SS

SF

PS

PF

*TR-2190 primary input leads are #30 AWG

E Teflon covered wire

TR-2189

*TR-2190

TR-2206

TR-2207

Mechanical Specifications

Note: Dimensions in inches (mm in parentheses)

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

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 M

Ω

VT(IN)

CT

2N6798

PF

PS

TR

SF

SS

vT(OC)

+

Transformer Circuit

5

10

15

20

25

30

35

40

45

7

6

5

4

3

2

VT(IN)—INPUT VOLTAGE, kV

TR-2189/2206—Low Voltage

Peak vT(OC) vs Peak VT(IN)

9

8

7

6

5

4

3

2

0

50

100

150

200

250

VT(IN)—INPUT VOLTAGE, kV

TR-2190/2207—High Voltage

Peak vT(OC) vs Peak VT(IN)

Output Voltage as a Function of Input Voltage

CT = 2.2µf

CT = 0.1µf

TR-2189

TR-2206

GND

500ns/Div

TIME

VT(IN) = 20 V vT(OC) = 3.85 kV, Peak VT(IN) = 110 V vT(OC) = 4.37 kV, Peak

GND

TIME

500ns/Div

TR-2190

TR-2207

Output Pulse Shapes

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