Trigger Transformers, Chokes Datasheet by Excelitas Technologies

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www.excelitas.com .LEEHSVLVG EKCELITAS TECHNOLOGIES
Trigger Transformers and Chokes
Description
Excelitas has been
manufacturing high voltage
transformers since 1956.
Standard and custom designs
are available with a wide
range of input and output
voltages. High performance is
ensured through state-of-the-
art manufacturing techniques
including vacuum impregna-
tion, vacuum encapsulations,
and meter-mix and dispense
systems.
Features
Peak output voltage up to 40kV
Load current up to 80A RMS
Surface mount, through hole or
hardware mounted
Flexible design—easily modified
.
www.excelitas.com
U |
External Trigger Transformers
Hold-off
Type
TR-2298***
TR-36A
TR-2300***
TR-1647
TR-2289
TR-148A
TR-2080
TR-1749C
TR-2081
TR-132C
TR-180B
TR-2070
TR-2157
TR-2012
TR-1700
TR-1795
TR-1855
Peak Output
Voltage
(kV)*
5.0
6.0
7.0
10.0
12.0
12.0
12.0
15.0
18.0
20.0
20.0
20.0
25.0
25.0
28.0
35.0
40.0
Primary
Peak
Discharge MAX Input Primary
Capacitor DC Source Current
fd) (Volts)
(A)**
0.1 150 50
1.0 250 25
0.1 200 80
2.0 40 40
0.5 160 90
0.5 400 120
0.5 150 60
0.5 250 120
1.0 200 140
0.5 400 60
1.0 200
110
0.5 240 76
0.5 350 60
0.5 300 90
0.5 400 70
0.22 600 96
2.0 300 90
Pulse Width
Rise Time
50%
10%-90%
Amplitude
s)** s)** Turns Ratio
0.1 0.35 21:1
1.0 5.0 15:1
0.15 0.35 21:1
1.5 1.2 250:1
0.8 1.0 58:1
0.35 0.5 30:1
0.5 1.0 65:1
0.7 0.7 80:1
1.0 2.5 155:1
2.25 2.5 70:1
1.0 1.5 112:1
1.5 1.2 220:1
1.2 1.5 73:1
2.0 5.0 163:1
0.75 1.5 70:1
0.5 0.5 51:1
5.0 5.0 121:1
Voltage
Sec to Pri
Length
Width Height Diameter
(kVdc) (inches) (inches) (inches) (inches)
4.0 0.35 0.41 0.34
0.5 0.69 1.06
4.0 0.35 0.41 0.35
1.0 1.00 1.25
4.0 0.78 1.03
2.0 1.93 1.25
2.0 1.00 0.94
0 1.25 .625
5.0 1.75 1.25
0 1.06 1.75
5.0 1.50 1.00
0 1.50 0.75
5.0 2.25 1.25
1.5 2.06 1.75
20.0 3.63 2.13 2.00
15.0 3.06 3.63 7.00
5.0 2.06 1.75
*Open circuit, unloaded secondary. **Measured at maximum voltage input, with primary discharge capacitor listed. ***Surface mount.
Series Trigger Transformers
Hold-off
Peak Pulse Peak
Turns Voltage
Output
Rise Time Width 50%
MAX Input Primary
Ratio
Secondary Saturated Winding
MAX
Voltage
10%-90%
Amplitude DC Source Current Secondary
to Primary
Inductance Resistance Current
Length Width
Height
Type
(kV)*
s)** (µs)** (Volts)
(A)** to Primary
(kVdc)
µH sat ohms
RMS (A) (inches) (inches) (inches)
TS-2174 10 0.4 0.3 400 60 38:1 2 80 1.0 0.4 1.2 1.0 0.8
TS-1987 10 0.5 0.3 600 215 19:1 5 70 0.5 0.1 1.0 1.3
TS-1952 10 0.6 0.2 400 300 40:1 5 36 0.1 1 1.5 1.0
TS-2028 13 0.5 0.5 500 120 40:1 5 35 0.03 16 2.4 2.3 1.9
TS-179 15 0.4 0.7 800 100 25:1 5 80 0.05 12 2.8 2.1 2.5
TS-2295 18 0.8 1.0 500 170 29:1 20 350 0.22 18 3.5 2.8 3.56
TS-170 20 0.2 0.5 2000 150 10:1 5 18 0.05 20 2.8 2.3 2.5
TS-146B 22 0.5 1.3 1000 850 30:1 30 73 0.015 35 4.0 3.5 6.0
TS-146A 27 0.5 0.5 1500 660 30:1 30
110
0.033 25 4.0 3.5 6.5
TS-185 30 0.5 1.0 600 60 50:1 15 550 0.3 15 3.3 2.8 3.8
TS-136B 40 0.65 2.15 1500 1100 30:1 30
110
0.02 80 7.5 5.0 5.75
*Open circuit, unloaded secondary. **Measured at maximum voltage input, with primary discharge capacitor listed.
Chokes
MAX Peak
DC
Current 1 MAX RMS
Resistance Voltage
ms Pulse
Current
Length Width
Height
Type Inductance (ohms)
(kV)
(amp) (amp) (inches) (inches) (inches)
TC-2136 50 0.03 5 2000 25 2.6 3.5 4.3
TC-1848 200 0.12 5 300 8 2.4 1.8
TC-70 300 0.19 5 2000 8 3.5 2.6 4.75
TC-71 600 0.25 5 2000 8 3.8 2.6 4.75
TC-198 775 0.27 2.5 1000 4 4.0 2.6 4.75
External Triggering
External triggering uses a high voltage
trigger pulse to create a thin ionized
streamer between the anode and cathode
within the lamp. The coupling of this
voltage to the lamp may be accomplished
using a thin nickel wire wrapped around
the surface of the lamp envelope as
External Triggering
R
FLASHLAMP
ANODE
CAPACITOR
CHARGING C
C
T
V
T
iT
SCR
TRIGGER
shown. Other techniques used to couple
external trigger transformers are reviewed
in the technical paper “Design
Considerations for Triggering of
Flashlamps”.
Series Injection Triggering
Series injection triggering differs from
POWER POWER
SUPPLY SUPPLY
GATE
TRIGGER
TRANSFORMER
Series Triggering
external triggering in that the discharge
current from the energy storage capacitor
passes through the secondary winding of
the trigger transformer. The secondary
winding of the transformer must therefore
be designed to carry the total current of
the discharge. This type of trigger trans-
former is consequently larger, heavier and
more expensive than the external trigger
transformer.
R
CAPACITOR
CHARGING C
POWER
SUPPLY
CATHODE
Excelitas
FLASHLAMP
TRIGGER
TRANSFORMER
C
T
V
T
SCR
TRIGGER
POWER
SUPPLY
GATE
iT
The inductance of the secondary
winding (of the trigger transformer) is
part of the discharge circuit and may be
utilized to control the energy storage
capacitor’s current pulse wave shape. A
typical series injection circuit is shown.
Additional series injection trigger circuit
configurations are discussed in the techni-
cal paper “Design Considerations for
Triggering of Flashlamps”.
Typical Mini-Trigger Spark Gap
+
OE
GAP 2.4-3.5 KV
C
T
AE
T
V
T(IN)
TR-2300
CVR
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Trigger Transformers and Chokes
Outline Drawings or Specification Charts
E = 1/2 CV2 where: E = Discharge energy (joules)
C = Capacitance (microfarads)
V = Discharge voltage (kilovolts)
PAVG = E F PAVG = Average power (watts)
E = Discharge energy (joules)
F = Flash rate (pulses per second)
IPK = V(C/L)½ IPK = Peak discharge current (keep below 1000 amps)
L = Circuit inductance (use 0.5µH for best approximation)
t1/3 = π (LC t1/3 = Pulse width at 1/3 peak.
Note: Peak currents should be kept below 1000 amps. Exceeding this limit could cause envelope fracture, excessive electrode wear and prema-
ture darkening.
Caution
Some glass flashlamps are under high internal pressure, and, if broken, could result in glass particles being
blown into the face and hand areas. To prevent injury, wear suitable protective devices such as safety glasses
and/or face mask and gloves.
Some types of pulsed lamps generate intense ultraviolet radiation which, if not properly shielded from per-
sonnel in the area, will cause burns to any exposed skin and especially to the eyes. Do not expose any skin
area or the eyes to the direct or reflected radiation of an operating lamp. If you have to view an operating
lamp, always use protective covering for exposed skin area and ultraviolet-attenuating goggles for the eyes.
For more information email us at generalinquiries@excelitas.com or visit our web site at www.excelitas.com
Note: All specifications subject to change without notice.
USA:
Excelitas Technologies
35 Congress Street
Salem, MA 01970
Toll Free: (800) 950-3441 (USA)
Phone: (978) 745-3200 .
Fax: (978) 745-0894
© 2011 Excelitas Technologies Corp. All rights reserved. 06/01
www.excelitas.com

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