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PerkinElmer Optoelectronics |
PerkinElmer’s Triggered
Spark Gaps are a family of versatile
high voltage switches. They consist
of three electrodes in a hermetically
sealed, pressurized ceramic enve-
lope. Triggered Spark Gaps are
generally characterized by a peak
current capability of thousands to
tens of thousands of amperes, delay
times of tens of nanoseconds, arc
resistance of tens of milliohms and
inductance of 5 to 30 nanohenries.
They are suitable for capacitor
switching applications such as flash-
lamps, electrically pumped gas
lasers, medical lithotripters, and
as crowbar protection devices.
Triggered Spark Gaps
Ceramic-Metal
EVERYTHING
IN A
NEW
LIGHT.
Features
• Fast switching operation
• High voltage holdoff
• Ceramic-metal construction
• No warm up period
• High current capability
• Long life
Triggered Spark Gap Ratings
O -A
PerkinElmer Range, kV
Model Min/Max
No. (1,10)
SBV, kV
VT
Min Trig
(kV Open
Circuit
(2) (3) (4)
(5)
GP-89 0.7 2.1 2.6
GP-90 1.3 3.4 4.2
GP-91 4.4 10 12.5
10
GP-93 8 20 25
GP-82B 0.4 1.6
2
GP-31B 2
GP-20B 3.5
6
11
7.5
14
10
GP-46B 8 20 25
GP-85 2
6
8
GP-86
GP-87
6
10
15
24
20
30
20
GP-70 12 36 42(8)
GP-30B 2 6 7.5
GP-22B
GP-12B
6
10
15
24
19
30
20
GP-14B 12 36 42(8)
GP-41B 12 36
42
GP-32B 20 48 60(8)
20
GP-15B 25 60 86(8)
GP-74B
GP-81B
40
40
100 120(8)
100 120(9)
20
Trigger
Mode
C
C
A,C
A, C
A,B
A
A,B
A
A,B
A
A,B
A
A
Typical Delay Time* Simultaneous Ratings Simultaneous Ratings
Recommended * when operated in mode A Crowbar Service, Repetitive Switching
PerkinElmer
(Nanoseconds)
Typical Life:
Typical Life:
Transformer At 70% SBV At 40% SBV 5000-20,000 Shots 1-5 Million Shots
(6, 7)
(11) (11)
TR-148A
5 kA peak
100 1000
TR-180B
0.1 coulomb
TR-148A
TR-180B
30
7.5 kA peak
300
0.2 coulomb
TR-1795
TR-180B
TR1700
30
300 25 kA peak
0.4 coulomb
3 millicoulombs/shot
lb = 35 mAdc
lp = 6 Aac
4 millicoulombs/shot
lb = 60 mAdc
lp = 8 Aac
4 millicoulombs/shot
lb = 100 mAdc
lp = 10 Aac
TR-1795
TR-1700
TR-1795
TR-1700
TR-1795
TR-1700
30
30
30
50 kA peak
300
0.5 coulomb
10 millicoulombs/shot
Peak currents up to 100 lb = 200 mAdc
300 kA and charge transfer lp = 15 Aac
up to 5 coulombs are
obtainable at reduced
300 life (100-1000 shots).
Notes
1. Optimum operating voltage is typically 60 to 80% of SBV.
2. Operation below minimum value may result in erratic firing
over time.
3. Operation at this value may result in self-firing over time.
4. Represents minimum main-gap breakdown voltage with no
trigger applied.
5. Value shown contains safety factor for end-of-life requirements.
6. PerkinElmer TM-11A Trigger Module can be used to trigger
all gaps.
7. Transformers listed vary mechanically and electrically. See
PerkinElmer Transformer Data Sheet.
8. These units must be operated in a liquid or gas dielectric to prevent
external flashover: GP-70 and GP-14B, above 24 kV; GP-32B and
GP-15B, above 35 kV; GP-74B and GP-81B, above 60 kV.
9. Designed for high altitude, high holdoff conditions.
10. Other voltage ranges and mechanical configurations are available
on request; for example, the GP-20B can be supplied with a 6 to
16 kV operating range by specifying GP-20B-20. The 20 would be
the SBV and E-E maximum would be 80% of SBV = 16kV.
11. E = Stored energy in joules (1/2CV2), lb = average current in
amperes, lp = RMS current in amperes, R = total circuit resistance
in ohms, P = average power in watts.
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PerkinElmer Optoelectronics
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